Vellozia pilosa Goethart & Henrard

Vellozia pilosa Goethart & Henrard

SPECIMENS EXAMINED.—Glaziou 19933.

SURFACE VIEW.—Hairs: some present. Epidermis: cells rectangular, thin walled on both surfaces; papillae present. Stomata: paracytic, 18 × 9 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with small median adaxial groove. Adaxial surface distinctly ridged; small furrows on abaxial surface. Epidermis: abaxial and adaxial cells rounded to dome shaped; cells on both surfaces thin walled. Subjacent to adaxial epidermis is a layer of parenchyma cells. Cuticle: very thin on adaxial and abaxial surfaces. Stomata: present on abaxial surface; no substomatal chamber observed. Mesophyll: three layers of palisade tissue blending into compactly arranged spongy tissue. Vascular bundles: 15; no commissural bundles observed. One to two large vessels present in each vascular bundle. Two phloem units lying laterally in flanges of U-shaped abaxial girder. Adaxial cap present on each vascular bundle. No abaxial sclerenchyma present. Bundle sheath surrounding each vascular bundle. Crystals and tannins: none observed.

Vellozia pilosa Goethart & Henrard

Vellozia pilosa Goethart & Henrard, Blumea, 2:377, 1937.— L. B. Smith, Contr. U.S. Nat. Herb., 35:262, 1962.—Ayensu, Smithsonian Contr. Bot., 15:35, pl. 43e, 1974.

TYPE.—On rocks, Diamantina, Minas Gerais, Brazil, 16 April 1892, Glaziou 19933 (L, holotype; B, photo; P, isotype).

DISTRIBUTION.—Known only from the type-collection.

Vellozia pilosa là một loài thực vật có hoa trong họ Velloziaceae. Loài này được Goethart & Henrard miêu tả khoa học đầu tiên năm 1937.