Vellozia tubiflora (A. Rich.) Kunth

Vellozia panamensis Standley

Vellozia panamensis Standley, Journ. Washington Acad. Sci., 15:457, 1925.—L. B. Smith, Contr. U.S. Nat. Herb., 35:269, 1962.

TYPE.—In savannas, Cerro Vaca, eastern Chiriqui, Panama, 900–1136 m alt, 25–28 December 1911, H. Pittier 5352 (US, holotype).

DISTRIBUTION.—Known only from the type-collection.

Vellozia lanata Pohl

Vellozia lanata Pohl, Pl. Bras., 1:130, 1827.—Seubert in Martius, Fl. Bras., 3(1)83, 1847.—L. B. Smith, Contr. U.S. Nat. Herb., 35:284, 1962.—Ayensu, Smithsonian Contr. Bot., 15:49, pls. 3a–b, 17b, 45e, 1974.

Vellozia cana Goethart & Henrard, Blumea, 2:367, 1937.— Ayensu, Smithsonian Contr. Bot., 15:46, pl. 45b, 1974 [type: among rocks, Paranana, Goiás, Brazil, 12 February 1895, Glaziou 22219 (L, holotype; B, photo 92, s n)].

TYPE.—Dry rocky mountains, Caldas Novas, Goiás, Brazil, ca. 16°48’S, Pohl s n (M, holotype; F, photo 18978).

DISTRIBUTION.—Brazil: Maranhão: Serra da Melicia, near Carolina, Rio Tocantins, 27 May 1950, Pires & Black 2351 (IAN, US, sterile, identification not certain). Minas Gerais: Patrocinio. Goiás: Alto Paraizo (Chapada dos Veadeiros), Goiás Velho (Serra Dourada), Pirenópolis, Veadeiros. Distrito Federal: Gama.

Vellozia lanata Pohl

SPECIMENS EXAMINED.—Pires et al. 9895; Veralucia and Graziella 26/1/1968.

SURFACE VIEW.—Hairs: absent. Epidermis: cells rectangular, thin walled. Stomata: tetracytic, 21 × 12 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; deeply V-shaped with median adaxial groove. Adaxial surface slightly undulating; abaxial surface furrowed about one-half thickness of blade. Epidermis: adaxial cells rounded to rectangular; abaxial cells rounded to dome shaped. One to two layers parenchyma cells subjacent to epidermis and interspersed with sclerenchyma strands. Below parenchyma and sclerenchyma is a distinct layer of parenchyma cells. Cuticle: thick and slightly ridged on adaxial surface; very thin on abaxial surface. Stomata: present in furrows; large substomatal chamber present. Mesophyll: three-layered palisade tissue grading into compact spongy tissue. One to two layers of large translucent cells arranged radially above vascular bundles and furrows. Vascular bundles: 37; few commissural bundles observed. One to three large vessels, mostly one. Two phloem units lying laterally in flanges of Y-shaped abaxial girder. Each vascular bundle accompanied by an adaxial cap. Abaxial strands present, sometimes displacing abaxial epidermis. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: few present.

Vellozia lithophila Schultes

SPECIMENS EXAMINED.—Schultes and Cabrera 18317.

SURFACE VIEW.—Hairs: present in tufts. Epidermis; cells square tu rectangular; thin walled. Stomata: paracytic, 21 × 15 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with margins turned slightly inversely. Adaxial surface slightly undulating, more so near midvein; abaxial surface furrowed one-half the thickness of blade; furrows wide and arch shaped. Epidermis: adaxial cells mostly dome shaped, with outer tangential wall concave. Abaxial cells rectangular to slightly dome shaped. Walls thin on both surfaces. One to two layers of parenchyma cells subjacent to adaxial epidermis and interspersed with sclerenchyma strands. Below sclerenchyma and parenchyma is a distinct single layer of parenchyma cells. Cuticle: very thick and slightly ridged on adaxial surface; one-half as thick on abaxial surface and slightly ridged. Stomata: present in abaxial furrows, substomatal chambers not observed. Mesophyll: two to three layers of palisade cells grading into compact spongy tissue. One to two layers of large translucent cells arranged radially above vascular bundles and on furrows. Vascular bundles: 49; few commissural bundles observed. One to two large vessels present in each vascular bundle, mostly one. Two phloem units lying laterally in flanges of Y-shaped abaxial girder; adaxial cap present on each vascular bundle. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: present.

NOTE: This species exhibits rather wide abaxial furrows resembling archs of large gates,

Vellozia tubiflora (A. Richard) Humboldt, Bonpland, & Kunth

Vellozia tubiflora (A. Richard) Humboldt, Bonpland, & Kunth, Nov. Gen. & Sp., 7:155, 1825.—L. B. Smith, Contr. U.S. Nat. Herb., 35:270, 1962.—Ayensu, Smithsonian Contr. Bot., 15:51, fig. 17a–c, pls. 35e–h, 38a–b, 1974.

Radia tubiflora A. Richard in Kunth, Syn. Pl. Aeq., 1:300, 1822.

Barbacenia alexandrinae Schomburgk, Barbacenia alexandrinae, 13, unnumbered pl., 1845.—Schomburk ex Hooker, London Journ. Bot., 4:13, 1845 [type: on sandstone hills, Mount Roraima, Guyana, 900–1200 m (3–4,000 ft) alt, 1835–43, Robert H. Schomburgk (K, B, F, photo 10050)].

Barbacenia tubiflora (A. Richard) Jackson, Ind. Kew, 4:1269, 1895 [wrongly attributed to Bentham & Hooker, Gen., 3:740, 1883, who made the combination only inferentially and not validly].

?Vellozia macrosiphonia Taubert, Bot. Jahrb., 21:424, 1896 [type: Serra dos Pirineus, Serra Dourada and Serra dos Veadeiros, Goiás, Brazil, Ule 3142 (B, holotype n v); the size of flowers of V. tubiflora varies widely enough to include V. macrosiphonia, and V. tubiflora has been collected in Cristalina, Goiás, south of the stated area of V. macrosiphonia].

Vellozia alexandrinae (Schomburgk) Goethart & Henrard, Blumea, 2:363, 1937.

?Vellozia duidae Steyermark, Fieldiana Bot., 28(1):157, 1951 [type: ridge top, Savana Hills, summit of Cerro Duida, Amazonas, Venezuela, 1025–1200 m alt., 2 September 1944, Steyermark 58270 (F, sterile)].

TYPE.—On granite rock, Rio Orinoco, Venezuela, May 1800, Humboldt & Bonpland s n (P, holotype n v).

DISTRIBUTION.—Colombia: Vichada: Raudal Atures, Raudal San Borja, on Río Orinoco. Venezuela: Bolivár: Auyan-tepui, Cerro Moriche, Kavanayen, Luepa. Amazonas: Duida (Cerro), Puerto Ayacucho, Sanariapo, Yutaje (Cerro). Guyana: Essequibo: Karaurieng River, Partang River. Brazil: Goiás: Cristalina.

Excluded and Doubtful Taxa

Vellozia velutinosa Goethart & Henrard

Vellozia velutinosa Goethart & Henrard, Blumea, 2:382, 1937.—L. B. Smith, Contr. U.S. Nat. Herb., 35:269, 1962.

TYPE.—Cabeceira (headwaters) of Rio Santa Ana, Goiás, Brazil, 8 January 1895, Glaziou 22218 (L, holotype; B, photo 89).

DISTRIBUTION.—Known only from the type-collection.

Vellozia machrisiana L. B. Smith

SPECIMENS EXAMINED.—Irwin et al. 12454; Irwin et al. 12697.

SURFACE VIEW.—Hairs: absent. Epidermis: cells rounded to rectangular on both surfaces; thin walled. Stomata: paracytic, 15 × 15 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with small median adaxial groove; turned slightly inversely at margins. Adaxial surface slightly undulating; abaxial surface furrowed about one-half thickness of blade and narrow. Epidermis: adaxial and abaxial cells rounded to dome shaped; thin walled. Subjacent to adaxial epidermis occur one to two layers of parenchyma cells interspersed with one- to two-layered strands of sclerenchyma. Below parenchyma layers and sclerenchyma strands is a distinct layer of parenchyma cells. Cuticle: thick on both surfaces; slightly ridged on abaxial surface; smooth on adaxial surface. Stomata: present in abaxial furrows; almost flush with surface; small substomatal chamber observed. Mesophyll: three to four layers of indistinct palisade tissue grading into compact spongy tissue. Two to three layers of large translucent cells arranged radially above vascular bundles and furrows. Vascular bundles: 28–31; some commissural bundles observed. One to three large vessels present in each vascular bundle, mostly one. Two phloem units arranged laterally in flanges of Y-shaped abaxial girder, adaxial cap present on each vascular bundle. Abaxial strands present; separated from spongy mesophyll by a distinct layer of parenchyma cells. Each vascular bundle is completely surrounded by a bundle sheath. Crystals and tannins: none observed.

NOTE: The two specimens are identical; however, the abaxial portion of the midvein is flattened in Irwin et al. 12697, while it is pointed in Irwin et al. 12454.

Vellozia machrisiana L. B. Smith

Vellozia machrisiana L. B. Smith, Contr. U.S. Nat. Herb., 35:268, pl. 9: figs. 11, 12, 1962.—Ayensu, Smithsonian Contr. Bot., 15:50, fig. 17d–f, pls. 4aûb, 35b–d, 1974.

TYPE.—On rocks in stream below falls (subject to running water), sandstone area 14 km south of Veadeiros, region of the Chapada dos Veadeiros, Goiás, Brazil, ca. 14°30′S, 47°30′W, 25 April 1956, Dawson 14674 (US, holotype).

DISTRIBUTION.—Known only from the type-collection.

Vellozia maculata Goethart & Henrard

Vellozia maculata Goethart & Henrard, Blumea, 2:375, 1987. L. B. Smith, Contr. U.S. Nat. Herb., 35:268, 1962.—Ayensu, Smithsonian Contr. Bot., 15:50, pls. 3c–d, 45f, 1974.

TYPE.—Cachoeiras da Vargem Grande da Serra da Balisa [Goiás], Brazil, 5 January 1895, Glaziou 22218–a (P, holotype; L, isotype; B, photo 87, 90).

DISTRIBUTION.—Known only from the type-collection.

Vellozia maculata Goethart & Henrard

SPECIMENS EXAMINED.—Glaziou 22218-a.

SURFACE VIEW.—Hairs: few present. Epidermis: cells square to rectangular on both surfaces; thin walled. Stomata: paracytic, 18 × 18 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped; margins turned inversely. Adaxial surface distinctly undulating especially in median region; two small adaxial grooves present laterally to midvein. Abaxial surface with fairly wide furrows about one-third to one-half thickness of blade. Epidermis: adaxial cells dome shaped to rectangular; abaxial cells rounded to dome shaped. Cells on both surfaces thin walled. Subjacent to adaxial epidermis occur layers of parenchyma cells interspersed with schlerenchyma strands. Below these layers is a distinct layer of parenchyma cells. Cuticle: thick on adaxial surface; about one-half as thick on abaxial surface. Cuticle on both surfaces slightly ridged. Stomata: present in furrows; substomatal chamber virtually absent. Mesophyll: two to three layers of indistinct palisade tissue grading into compact spongy tissue. One layer large translucent cells arranged radially above vascular bundles; one to two layers above furrows. Vascular bundles: 21; no commissural bundles observed. One to two large vessels present in each vascular bundle. Two phloem units arranged laterally in flanges of Y-shaped abaxial girder. Adaxial girder present on all vascular bundles and almost extended to adaxial epidermis. Some abaxial sclerenchyma strands present. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: present.

NOTE: The lateral extensions of the outer edges of the abaxial furrows serve as valves encasing the areas where stomata are present. The extensions also recall similar structures in Vellozia hemispherica and V. burle-marxii.

Vellozia maudeana R. E. Schultes

Vellozia maudeana R. E. Schultes, Bot. Mus. Leafl. Harvard, 16:198, pls. 29, 30, 1954—L. B. Smith, Contr. U.S. Nat. Herb., 35:269, 1962.

TYPE.—Quartzite savanna. Goo-rán-hoo-da, Mesa de Yambí, Río Karurú (tributary of Río Vaupés), Vaupés, Colombia, 1°20′N, 71°20′W, ca. 285 m (950 ft) alt, 15–16 April 1953, Schultes & Cabrera 19120 (GH, holotype; US, isotype).

DISTRIBUTION.—Known only from the type-collection.

Vellozia tubiflora A. Richard

SPECIMENS EXAMINED.—Foldats 3526; Maguire et al. 29156, 29245, 30703, 30835, 30941, 30955, 31003, 31679, 31777, 32307, 33532, 35131, 35136, 35248, 36051, 43855, 45918; L. Williams 12974, 13459, 16022; Steyermark 93208, 60326; Steyermark and Aristiquita 54; Steyermark and Nilsson 554; Tamayo 3105; Tate 1196; Lasser 1777.

SURFACE VIEW.—Hairs: present on abaxial surface of most specimens. Epidermis: cells square to rectangular on both surfaces, thin walled. Stomata: paracytic, 21 × 12 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with margins turned slightly inversely; small median adaxial groove present. Adaxial surface slightly undulating; abaxial surface furrowed about one-half thickness of blade; furrows may be wide or narrow. Epidermis: adaxial cells rectangular; abaxial cells rounded to dome shaped. Walls thin on both surfaces. Subjacent to adaxial epidermis are one to three layers of parenchyma cells interspersed with sclerenchyma strands. Below is a distinct layer of parenchyma cells. Cuticle: thick on both adaxial and abaxial surfaces. Stomata: present in abaxial furrows; substomatal chamber present. Mesophyll: three to four layers of palisade cells grading into compactly arranged spongy tissue. One to two layers of large translucent cells arranged radially above vascular bundles and on furrows. Vascular bundles: 13–55; no commissural bundles observed. One to two large vessels present. Two phloem units lying laterally in flanges of Y-shaped abaxial girder extending to epidermis. Adaxial cap present on each vascular bundle. Few

abaxial strands present. Bundle sheath completely surrounding each vascular bundle. Crystals: present. Tannins: few observed.

NOTE: The diagnostic features that characterize this species were found to be very uniform in all the specimens examined. This observation is indicative of the reliability of the leaf characters in the identification of species.

Vellozia cana Goethart & Henrard

SPECIMENS EXAMINED.—Irwin et al. 11734, 12556.

SURFACE VIEW.—Hairs: absent. Epidermis: adaxial and abaxial cells mostly rectangular, generally thin walled; slightly thick on veins. Stomata: paracytic, 18 × 12 μm; observed on both surfaces.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with slight median adaxial groove. Adaxial surface evenly undulating; abaxial surface furrowed about one-third of blade thickness. Epidermis: cells more or less square shaped, adaxial cells slightly larger than abaxial ones; adaxial cells evenly interrupted by strands of sclerenchyma. Some of abaxial cells replaced by almost continuous band of sclerenchyma. Cuticle: thin on both surfaces. Stomata: almost flush with epidermis; few on adaxial surface, mostly confined to abaxial surface, specifically in furrows; guard cells thick walled with no projecting ledges; substomatal chamber present. Mesophyll: adaxial palisade four to six layered, occupying about half of mesophyll and abruptly changing into spongy tissue. Palisade layers alternate with large translucent cells radially arranged above vascular bundles and furrows; rest of mesophyll compactly arranged and filled with chloroplast. Translucent cells radially arranged above vascular bundles and furrows. Vascular bundles: 57–59; commissural bundles present. Large veins each with one to two large vessels, occasionally three or more. Two phloem units lying laterally in flanges of abaxial Y-shaped girder. Each vascular bundle always accompanied by abaxial inverted V-shaped sclerenchyma cap, both in turn completely surrounded by a distinct bundle sheath. Crystals: not observed. Tannins: present but not abundant.

NOTE: The abaxial strands at the wide end of the furrows and the almost horizontal median abaxial portion are very distinctive.

Vellozia Candida Mikan

SPECIMENS EXAMINED.—Carauta 160; Kuhlman 8-XI-922; Porto 91195; Jardim Bot., Rio de Janeiro 2485.

SURFACE VIEW.—Hairs: absent. Epidermis: cells rounded, square to rectangular on both surfaces; thin walled. Stomata: paracytic, 24 × 15 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with margins turned inversely. Adaxial surface undulating; abaxial surface furrowed about one-third thickness of blade. Epidermis: adaxial cells dome shaped or rectangular; abaxial cells rounded to dome shaped; cell walls thin on both surfaces. Subjacent to adaxial epidermis are sclerenchyma strands interspersed with parenchyma cells. Below is a distinct row of parenchyma cells. Cuticle: thick and slightly ridged on adaxial surface; thinner and slightly ridged on abaxial surface. Stomata: present on abaxial surface especially in furrows; substomatal chamber present; stomata flush with epidermal surface. Mesophyll: three-layered palisade tissue changing abruptly to compactly arranged spongy tissue. Large translucent cells arranged radially above vascular bundles. Vascular bundles: 25–35; commissural bundles not observed. One to two large vessels observed, mostly one. Two phloem units laterally arranged in flanges of Y- or U-shaped abaxial girder. Each vascular bundle always accompanied by inverted adaxial cap and bundle sheath completely surrounding vascular bundles. Crystals: none observed. Tannins: few.

NOTE: The large abaxial crescentiform sclerenchyma band is very distinctive.

Vellozia dumitiana R. E. Schultes

Vellozia dumitiana R. E. Schultes, Mutisia, 12:2, unnumbered pl. 1952—L. B. Smith, Contr. U.S. Nat. Herb., 35: 269, 1962.—Ayensu, Smithsonian Contr. Bot., 15:48, pls. 2a–b, 45d, 1974.

TYPE.—On sandstone, Cerro Isibukuri, Rio Kananari (affluent of Rio Apaporis), Vaupés, Colombia, ca. 700 m alt, 1 December 1951, R. E. Schultes & Cabrera 14726 (GH, holotype; COL, isotype).

DISTRIBUTION.—Known only from the type-locality.

Vellozia dumitiana R. E. Schultes

SPECIMENS EXAMINED.—Barriga 13804; Cabrera and Schultes 15050A.

SURFACE VIEW.—Hairs: long and narrow, unicellular and multicellular, often with coalesced bases, observed on abaxial surface only. Epidermis: adaxial and abaxial cells uniformly rectangular. Stomata: tetracytic, 21 × 18 μm; present on abaxial surface only.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with shallow median adaxial groove but tending to shallowly corrugate. Adaxial surface gently undulating. Abaxial surface deeply furrowed about two-thirds of blade thickness. Epidermis: cells square shaped, adaxial cells slightly larger than abaxial ones; cells somewhat translucent. Subjacent to epidermis occur two to three layers of parenchyma cells followed by strands of fibers. Below these layers and fibers occurs a layer of large translucent cells separating epidermal and subepidermal layers of cells from mesophyll. Cuticle: thin on both surfaces. Stomata: confined to abaxial furrows only; almost flush with epidermis. Mesophyll: adaxial palisade four- to five-layered, occupying about half of mesophyll, and abruptly changing into spongy tissue; three to five rows of translucent layers radially arranged above vascular bundles and abaxial furrows. Vascular bundles: 18–33; commissural bundles few. Large veins each with one to two wide vessels, mostly one. Two phloem units lying laterally in flanges of abaxial Y-shaped girder. Each vascular bundle always accompanied by adaxial inverted V-shaped sclerenchyma cap and abaxial Y-shaped girder; both in turn completely surrounded by a distinct bundle sheath. Crystals: square shaped and styloid-like. Tannin: present especially in palisade cells.

NOTE: The two collections are identical in their anatomy except that Barriga 13804 has a slightly narrower leaf.

Vellozia lithophila R. E. Schultes

Vellozia lithophila R. E. Schultes, Fam. Velloz. Colomb. in Rev. Acad. Colomb. Cienc, 8(32):459, unnumbered pl., 1950.—L. B. Smith, Contr. U.S. Nat. Herb., 35:270, 1962.— Ayensu, Smithsonian Contr. Bot., 15:49, figs. 2b, 16d–f, pl. 2c–d, 1974.

TYPE.—Mesa La Lindosa, 15–20 km south of San José del Guaviare, Vaupés, Colombia, 400–600 m alt, 13–15 December 1950, Idrobo & Schultes 632 (GH, holotype; US photo).

DISTRIBUTION.—Colombia: Meta: San José del Guaviare. Vaupés: Cerro Kañendá, 1°0′N, 70°5′W; Rio Paraná Pichuna, 1°10′N, 70°30′W; Yapobodá 1°20′N, 70°30′W.

Vellozia rhynchocarpa Goethart & Henrard

Vellozia rhynchocarpa Goethart & Henrard, Blumea, 2:378, 1937.—L. B. Smith, Contr. U.S. Nat. Herb., 35:269, 1962.

TYPE.—Dry rocky campo, near Mato Grosso between Cana Verde and Cajuru, 21°17′S, 47°20′W, São Paulo, Brazil, February 1849, Regnell III–1241 (L, holotype; S, US, isotypes).

DISTRIBUTION.—Known only from the type-collection.

Vellozia dawsonii L. B. Smith

SPECIMENS EXAMINED.—Irwin et al. 12648.

SURFACE VIEW.—Hairs: present, tuftlike. Epidermis: adaxial and abaxial cells mostly rectangular. Stomata: paracytic, 18 × 15 μm; occur on both surfaces but highly concentrated in abaxial furrows.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with slight median adaxial groove and abaxially two grooved. Adaxial surface undulating; abaxial surface furrowed about one-third of blade thickness. Epidermis: cells more or less rectangular shaped on adaxial surface and almost rounded on abaxial surface. Abaxial epidermis partially replaced with sclerenchyma fibers. Subjacent to adaxial epidermis occur one to two layers of parenchyma cells interspersed with short strands of sclerenchyma. Below sclerenchyma strands and subjacent paranchyma is a layer of large translucent cells separating subjacent cells from mesophyll. Cuticle: generally thin, but slightly thickened around median region. Stomata: mostly confined to furrows in abaxial surface, conspicuous in places. Mesophyll: adaxial palisade three to four layered, occupying a little under half of mesophyll and changing abruptly into spongy tissue; three to four rows of large translucent cells arranged radially above vascular bundles and furrows. Palisade and spongy cells compactly arranged and filled with chloroplasts. Mesophyll in median section of leaf composed of large translucent cells, bulliform-like. Vascular bundles: 52; commissural bundles present. Large veins with one to two wide vessels. Two phloem units lying laterally in flanges of abaxial Y-shaped girder. Each vascular bundle always accompanied by adaxial inverted V-shaped sclerenchyma cap; both in turn completely surrounded by a distinct bundle sheath. Crystals: not observed. Tannin: few in mesophyll.

NOTE: The tuftlike appearance of unicellular and multicellular macro-hairs is very distinctive.

Vellozia dawsonii L. B. Smith

Vellozia dawsonii L. B. Smith, Contr. U.S. Nat. Herb., 35:270, pl. 7, 1962.—Ayensu, Smithsonian Contr. Herb., 15:48, fig. 3g–h, pls. 1a–b, 45c, 51a, 1974.

TYPE.—On sandstone outcrop, 7 km south of Veadeiros, region of the Chapada dos Veadeiros, Goiás, Brazil, ca. 14°30′S, 47°30′W, 24 April 1956, Dawson 14580 (US, holotype).

DISTRIBUTION.—Known only from the type-area.

Vellozia cachimbensis L. B. Smith

SPECIMENS EXAMINED.—Pires et al. 6235; Pires 6111.

SURFACE VIEW.—Hairs: small papillae present in clusters on both surfaces. Epidermis: cells square to rectangular; few adaxial and abaxial cells rounded; thin walled on both surfaces. Stomata: paracytic, 15 × 9 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with slight median adaxial groove. Adaxial surface slightly ridged; abaxial surface furrowed about one-third thickness of blade. Epidermis: adaxial cells rectangular to rounded; abaxial cells rounded to dome shaped. Subjacent to adaxial epidermis are one to two rows of parenchyma cells interspersed with sclerenchyma strands above radially arranged translucent cells on each furrow; below parenchyma cells occurs a distinct layer of parenchyma cells; few abaxial sclerenchyma strands. Cuticle: fairly thick and smooth on adaxial surface; fairly thick and slightly ridged on abaxial surface. Stomata: present in abaxial furrows with small substomatal chamber. Mesophyll: three to four layers of indistinct palisade tissue grading onto compactly arranged spongy tissue. One to two layers of large translucent palisade cells radially arranged above vascular bundles and furrows. Vascular bundle: 21–36; commissural bundles not observed. Large veins with one to three large vessels, mostly one. Two phloem units arranged laterally in flanges of Y-shaped abaxial girder. Each vascular bundle accompanied by an abaxial girder and adaxial cap. Bundle sheath completely surrounding vascular bundle. Crystals: none observed. Tannins: few present in mesophyll. NOTE: The adaxial inverted caps are almost V-shaped and extend closely to epidermis.

Vellozia uleana L. B. Smith

Vellozia uleana L. B. Smith, Contr. U.S. Nat. Herb., 35:269, pl. 9: figs. 13, 14, 1962.

LEAF ANATOMY (Ule 8372).—Surface View: Hairs: few large tufts observed. Epidermis: cells on both surfaces square to rectangular; thin-walled. Stomata: tetracytic, 21 × 12 μm; present in abaxial furrows only.

Transverse Section of Lamina: Dorsiventral; widely V-shaped with small median adaxial groove and margins curved downward. Few tufts of hairs observed on both surfaces. Adaxial surface undulating; abaxial surface furrowed ½ thickness of blade. Epidermis: adaxial cells square to rectangular; few crescent-shaped; thin-walled. Abaxial cells rounded to dome-shaped; thin-walled. Subjacent to adaxial epidermis is 1 or 2 layers of thin-walled parenchyma interspersed with 1 or 2 layers of sclerenchyma fiber bundles. Below this is a layer of large, thin-walled parenchyma cells. Subjacent to abaxial epidermis is a layer of thin-walled parenchyma cells. Cuticle: thick and ridged on both surfaces. Stomata: present in abaxial furrows only; flush with epidermal surface. Mesophyll: 3 or 4 layers of palisade cells followed by compactly arranged spongy mesophyll. Two or three layers of translucent cells radially arranged above vascular bundles, furrows, and midvein. One or two layers of sclerenchyma fiber bundles present at abaxial corners of furrows; partially replacing some abaxial epidermal cells. Vascular bundles: 27; commissural bundles not observed. One or two large vessels present in each bundle, mostly one. Two phloem units lying laterally in flanges of Y-shaped abaxial girder. Adaxial cap present on each bundle. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: present.

TYPE.—Rock faces of Serra de Uairary (?Mairarí), Surumú, Rio Branco, Brazil, 1000–1200 m alt, September 1909, Ule 8372 (MG, holotype; L; NY; US, isotypes).

DISTRIBUTION.—Known only from the type-collection.

Vellozia macarenensis Philipson

Vellozia macarenensis Philipson in Schultes, Fam. Velloz. Colomb. in Rev. Acad. Colomb. Cienc, 8(32):461, unnumbered pl., 1952.—L. B. Smith, Contr. U.S. Nat. Herb., 35: 268, 1962.

LEAF ANATOMY (Garcia-Barriga et al. 17032, Thomas et al. 1596, Philipson et al. 2320).—Surface View: Hairs: present in tufts on both surfaces; short hairs on adaxial; long on abaxial. Epidermis: cells square to rectangular; thin-walled. Stomata: paracytic, some tetracytic, 18 × 12 μm; present in abaxial furrows only.

Transverse Section of Lamina: Dorsiventral;

widely V-shaped with margins curved downward and partially backward. Adaxial surface ridged; abaxial surface furrowed ½ to ¾ thickness of blade. Hairs present on both surfaces. Epidermis: cells on both surfaces rounded to dome-shaped; thin-walled. Large amount of abaxial cells replaced by sclerenchyma fibers. Subjacent to adaxial epidermis is a layer of thin-walled cells interspersed with sclerenchyma fibers. This is followed by a layer of large, thin-walled cells. Cuticle: thick and smooth on adaxial surface; thinner and smooth on abaxial surface. Stomata: present in abaxial furrows only; stomata raised above surface and have a small substomatal chamber. Mesophyll: 3 or 4 layers of palisade cells followed by compactly arranged spongy mesophyll. Translucent palisade cells radially arranged above vascular bundles and furrows. Sclerenchyma fibers present on abaxial corners of furrows and extending partially into furrows. Vascular bundles: 15–27; commissural bundles not observed. One or two large vessels present in each bundle, mostly one. Two phloem units lying laterally in flanges of Y-shaped abaxial girder. Adaxial cap present on each bundle. Bundles surrounded by a bundle sheath. Crystals: none observed. Tannins: few present.

TYPE.—Open space on summit of knoll, Sierra de La Macarena, northern escarpment, Meta, Colombia, 900 m alt, 1 February 1950, Philipson, Idrobo & Jaramillo 2320 (BM, holotype; COL, GH, isotypes).

DISTRIBUTION.—Known only from the type-area.

Vellozia annulata Goethart & Henrard

Vellozia annulata Goethart & Henrard, Blumea, 2:365, 1937.—L. B. Smith, Contr. U.S. Nat. Herb., 35:269, 1962.

LEAF ANATOMY (Glaziou 22212).—Surface View: Hairs: tufts of hairs present on both surfaces. Epidermis: cells on both surfaces square to rectangular; thin-walled. Stomata: paracytic and tetracytic; 21 × 18 μm; present on both surfaces and in abaxial furrows.

Transverse Section of Lamina: Dorsiventral; widely V-shaped. Adaxial surface ridged; abaxial surface furrowed about ½ thickness of blade. Tufts of hairs present on both surfaces. Epidermis: cells on both surfaces rounded to dome-shaped; few conical; thin-walled. Few sclerenchyma fiber bundles present in layer subjacent to adaxial epidermis; almost a complete layer of sclerenchyma fibers in layer subjacent to abaxial epidermis. Cuticle: thick and ridged on entire surface. Stomata: present on both surfaces especially in abaxial furrows; stomata flush with epidermal surface; small substomatal chamber present. Mesophyll: 4 or 5 layers of palisade cells; many translucent, especially directly above vascular bundles and furrows; this is followed by 12 or 13 layers rounded, thin-walled, compactly arranged cells. Vascular bundles: 17; commissural bundles observed. One or two xylem vessels present in each bundle; mostly one. Two phloem units lying laterally in flanges of thick, Y-shaped abaxial girder. Adaxial cap present on each bundle. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: present.

TYPE.—Among rocks, Cachoeira da Vargem Grande, Goiás, Brazil, 4 January 1895, Glaziou 22212 (L, holotype; B, photo 93, s n).

DISTRIBUTION.—Brazil: Goiás: Cachoeira da Vargem Grande, Veadeiros.

Vellozia tubiflora là một loài thực vật có hoa trong họ Velloziaceae. Loài này được (A.Rich.) Kunth miêu tả khoa học đầu tiên năm 1825.