Vellozia pulchra L. B. Sm.

Vellozia pulchra L. B. Smith

Vellozia pulchra L. B. Smith, Contr. U.S. Nat. Herb., 35:290, pl. 12: figs. 60–62, 1962.

TYPE.—Granite slopes, immediately west of Pedra Azul, Minas Gerais, Brazil, 21 August 1960, Maguire, Magalhães & Maguire 49289 (US, holotype; NY, isotype).

DISTRIBUTION.—Known only from the type-collection.

82. Vellozia bahiana L. B. Smith & Ayensu, new species

A V. cinerascente Martius ex Schultes f., cui affinis, foliorum trichomatibus simplicibus filiformibusque, alteris ovarii simplicibus subulatisque differt.

Caudex largely unknown, apically 12 mm in diameter (including leaf-sheaths). Leaves few-ranked, densely white-puberulent on all exposed surfaces, nonglutinous; sheaths subdensely imbricate with 15 mm of the apex exposed, 4 cm long, the midnerve contrasting, the line of abscission strongly arched; blades linear, attenuate to a narrowly obtuse apex, 28 cm long, 10 mm wide at base, the margins and midnerve laxly serrulate with erect trichomes slightly larger and stouter than the others.

Scapes (detached) terminal(?), 2(?), to 12 cm long, sulcate, glabrous. Ovary subglobose, 8 mm long, covered with contorted subulate acute or bidentate trichomes. Tepals elliptic, 5–6 cm long. Stamens ca. 18, over 3 cm long; phalanges irregular, unappendaged. Style 4 cm long; stigmas terminal, orbicular, spreading.

LEAF ANATOMY (Maia s n in SP 110129).—Surface View: Hairs: tufts of hairs present on both surfaces; single hairs also present on abaxial, especially in furrows. Epidermis: cells on both surfaces square

to rectangular; thin-walled. Stomata: tetracytic, 21 × 18 μm; present in rows on adaxial surface and in abaxial furrows.

Transverse Section of Lamina: Dorsiventral; widely V-shaped; almost horizontal. Adaxial surface furrowed one-fourth thickness of blade. Hairs present on both surfaces. Epidermis: cells on both surfaces rounded to dome-shaped; few conical; thin-walled; interspersed with sclerenchyma strands. Subjacent to both epidermises is a layer of thin-walled parenchyma cells. Cuticle: thickened and ridged on adaxial; thicker and ridged on abaxial. Stomata: present on adaxial surface and in abaxial furrows; stomata flush with surface; substomatal chamber present. Mesophyll: 3 or 4 layers palisade tissue followed by compact spongy tissue; 1 or 2 layers translucent palisade radially arranged above vascular bundles, furrows, and midvein. Sclerenchyma fibers at abaxial corners of furrows. Vascular bundles: 35; commissural bundles observed; 1 or 2 large vessels present in each bundle, mostly one. Two phloem units lying laterally in flanges of Y- or U-shaped abaxial girder. Adaxial cap present on each bundle. Bundle sheath completely surrounding each bundle. Crystals: present in bundle sheath. Tannins: few present.

Note: This species is one of few in the family that exhibit adaxial stomata complexes.

TYPE.—Without exact locality, Bahia, Brazil, W. Maia s n (SP 110129, holotype; US, photo).

DISTRIBUTION.—Unknown.

83. Vellozia cinerascens (Martius ex Schultes f.) Martius ex Seubert

Vellozia cinerascens (Martius ex Schultes f.) Martius ex Seubert in Martius, Fl. Bras., S(1):74, 1847.—L. B. Smith, Contr. U.S. Nat. Herb., 35:266, 1962—Ayensu, Smithsonian Contr. Bot., 15:16, fig. 3c–d, pls. 4c–d, 42c, 1974.

Xerophyta cinerascens Martius ex Schultes f. in Roemer & Schultes, Syst., 7:292, 1826.

TYPE.—Rocky fields near Fazenda Capoculo, [Pernambuco] and in grassy campo of Santa Isabella, [Piauí], Brazil, April 1819, Martius s n (M, holotype; F, photo 18971).

DISTRIBUTION.—Piauí, Fernambuco: Bahia: Serra de Tinga, Sentocé (Sento Se), 9°38′S, 41°12′W, Zehntner 323 (RB).