Comprehensive Description
provided by Smithsonian Contributions to Botany
Vellozia crinita Goethart & Henrard
Vellozia crinita Goethart & Henrard, Blumea, 2:368, 1937.— L. B. Smith, Contr. U.S. Nat. Herb., 35:267, 1962—Ayensu, Smithsonian Contr. Bot., 15:18, pl. 42d, 1974.
TYPE.—On rocks, summit of São José (João?) d’El Rey, Minas Gerais, Brazil, 15 December 1886, Glaziou 16388 (L, holotype; P, isotype).
DISTRIBUTION.—Known only from the type-collection.
- bibliographic citation
- 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
provided by Smithsonian Contributions to Botany
Vellozia crinita Goethart & Henrard
SPECIMENS EXAMINED.—Glaziou 16388.
SURFACE VIEW.—Hairs: absent. Epidermis: adaxial cells square to rectangular, few rounded; thin walled. Abaxial cells rectangular; thin walled. Stomata: paracytic, 21 × 12 μm; present on abaxial surface.
TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with margins curved slightly inversely but not flanged; small median adaxial groove. Adaxial surface slightly undulating; abaxial surface furrowed about one-half thickness of blade. Epidermis: adaxial cells rounded to rectangular;
abaxial cells more rounded to conical; thin walled on both surfaces. Two to three layers parenchyma cells subjacent to adaxial epidermis and interspersed with sclerenchyma strands. Cuticle: very thin on adaxial and abaxial surfaces. Stomata: present on abaxial surface and in abaxial furrows. Substomatal chamber present: stomata almost flush with surface. Mesophyll: three to four layers palisade cells; not distinctive; blending right into compact spongy tissue. Row of large translucent palisade cells arranged radially above vascular bundles and furrows. Vascular bundle: 34; no commissural bundles observed. Veins with a single large vessel. Two phloem units lying in flanges of Y-shaped abaxial girder; girder extends almost to abaxial epidermis. Cap or partial adaxial girder occurs on each vascular bundle. Bundle sheath completely surrounding each vascular bundle; adjacent to epidermis on abaxial surface. Epidermal extensions present in furrows. Few abaxial sclerenchyma strands observed on lower edge of furrows. Crystals: none observed. Tannins: few present.
- bibliographic citation
- 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 crinita: Brief Summary
(
Vietnamese
)
provided by wikipedia VI
Vellozia crinita là một loài thực vật có hoa trong họ Velloziaceae. Loài này được Goethart & Henrard miêu tả khoa học đầu tiên năm 1937.
- license
- cc-by-sa-3.0
- copyright
- Wikipedia tác giả và biên tập viên
Bài viết liên quan đến Bộ Dứa dại này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. 
