Comprehensive Description
(
англиски
)
добавил Smithsonian Contributions to Botany
Vellozia verruculosa Martius ex Schultes f
Vellozia verruculosa Martius ex Schultes f. in Roemer & Schultes, Syst., 7:293, 1826.—Seubert in Martius, Fl. Bras., 3(1):77, 1847.—L. B. Smith, Contr. U.S. Nat. Herb., 35:260, 1962.—Ayensu, Smithsonian Contr. Bot., 15:44, pls. 19a–b, 26a–c, 1974.
TYPE.—Brazil, Goiás, Pohl s n (hb?, paratype); Mato Grosso, Manso s n (hb?, paratype).
DISTRIBUTION.—Brazil: Goiás: Corumba. Mato Grosso: without locality.
- библиографски навод
- Smith, Lyman B. and Ayensu, Edward S. 1976. "A Revision of American Velloziaceae." Smithsonian Contributions to Botany. 1-172. https://doi.org/10.5479/si.0081024X.30
Comprehensive Description
(
англиски
)
добавил Smithsonian Contributions to Botany
Vellozia verruculosa Martius ex Schultes f
SPECIMENS EXAMINED.—L. O. Williams 8112.
SURFACE VIEW.—Hairs: few papillae present. Epidermis: cells square to rectangular on both surfaces; few rounded on abaxial surface; walls thin on both surfaces. Stomata: paracytic, 12 × 6 μm; present on adaxial and abaxial surfaces.
TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with small median adaxial groove. Adaxial surface slightly undulating; abaxial surface furrowed about one-half thickness of blade. Epidermis: cells on both surfaces rounded to rectangular; thin walled. One to two layers of parenchyma cells interspersed with sclerenchyma strands occur between adaxial epidermis and a distinct layer of parenchyma cells. Cuticle: fairly thick on both surfaces and slightly ridged. Stomata: present in abaxial furrows as well as on abaxial and adaxial surfaces. Substomatal chamber present; stomata almost flush with surface. Mesophyll: three- to four-layered palisade tissue grading into compactly arranged spongy tissue. One to two layers of large translucent cells arranged radially above vascular bundles and on furrows. Vascular bundles: 21; few commissural bundles observed. One to two large vessels present in each vascular bundle, mostly one. Two phloem units arranged laterally in flanges of V- or U-shaped abaxial girder. Adaxial cap present on each vascular bundle. Some abaxial sclerenchyma strands present between abaxial epidermis and a layer of parenchyma cells. Bundle sheath completely surrounding each vascular bundle. Crystals: none observed. Tannins: present.
- библиографски навод
- Ayensu, Edward S. 1974. "Leaf Anatomy and Systematics of New World Velloziaceae." Smithsonian Contributions to Botany. 1-125. https://doi.org/10.5479/si.0081024X.15
Vellozia verruculosa: Brief Summary
(
виетнамски
)
добавил wikipedia VI
Vellozia verruculosa là một loài thực vật có hoa trong họ Velloziaceae. Loài này được Mart. miêu tả khoa học đầu tiên năm 1829.
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