Vellozia crinita Goethart & Henrard

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.

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.