Vellozia resinosa Mart.

Vellozia resinosa Martius ex Schultes f

Vellozia resinosa Martius, ex Schultes f. in Roemer & Schultes, Syst., 7:293, 1826.—Seubert in Martius, Fl. Bras., 3(1):80, 1847.—[emend.] L. B. Smith, Contr. U.S. Nat. Herb., 35:262, 1962.—Ayensu, Smithsonian Contr. Bot., 15:37, fig. 8a–c, pls. 30g–h, 31a, 1974.

Vellozia irwinii L. B. Smith in Ayensu, Smithsonian Contr. Bot., 15:29, pl. 43a, 1974 [nomen.; based on Irwin, Maxwell & Wasshausen 20998 (NY, US), rocky campo, 17 km north of Sêrro, Serra do Espinhaço, Minas Gerais, Brazil, 1200 m alt, 27 February 1968].

TYPE.—Without locality, Minas Gerais, Brazil, Martius s n (M, holotype; F, photo 18982).

DISTRIBUTION.—Brazil: Minas Gerais: Serra do Cipó, Sêrro.

39. Vellozia teres L. B. Smith & Ayensu, new species

A V. variabile Martius ex Schultes f., cui affinis, tepalis minoribus, ovario haud trigono differt.

Caudex (imperfectly known) simple (?), 15 cm high (!Irwin), 1 cm thick including leaf-sheaths. Leaves at least 11 complete in the apical fascicle; sheaths densely imbricate (?), at least 3 cm long,

glutinous at apex, otherwise even and glabrous; blades very narrowly triangular, to 75 mm long, 6 mm wide at base, bicarinate above toward apex, densely and minutely serrulate on the margins and keels, otherwise even and glabrous.

Scape terminal, solitary, erect, shorter than the leaves, sulcate, minutely stipitate-glandular toward apex. Ovary ellipsoid, 13 mm long including the broad 2 mm long epigynous tube, sparsely sessile-glandular on the centers of the carpels, otherwise even and lustrous. Tepals elliptic, broadly rounded and apiculate, 25 mm long, violet (!Irwin), glabrous. Stamens ca. 18–24, phalange-appendages coarsely dentate, anthers 9 mm long.

LEAF ANATOMY.—Ayensu, Smithsonian Contr. Bot., 15:42, pl. 44e, 1974.

TYPE.—On outcrops, rocky campo, Serra do Espinhaço, ca. 17 km north of Sêrro on road (MG 2) to Diamantina, Minas Gerais, Brazil, 1200 m alt, 27 February 1968, Irwin, Maxwell & Wasshausen 21000 (US, holotype; NY, isotype).

DISTRIBUTION.—Known only from the type-collection.

40. Vellozia torquata L. B. Smith & Ayensu, new species

A V. variabile Martius ex Schultes f. et fere omnibus speciebus alteris scapis articulatis differt.

Caudex to ca. 1.5 m tall (!Irwin), branched. Leaves ca. 6-ranked, nonglutinous; sheaths sub-dense with considerable apical exposure; blades soon reflexed and long-persistent, linear-triangular, attenuate to a narrowly obtuse apex, to 13 cm long, 12 mm wide, faintly bicarinate above, nearly flat, laxly serrulate with suberect white spines, otherwise even and glabrous.

Scapes terminal, 3 (typically), 4 cm long (above the leaf-sheaths), articulate near apex, sulcate, laxly and minutely stipitate-glandular. Ovary ellipsoid, then contracted into a cylindrical epigynous tube, in all 12 mm long, subterete, laxly glandular in vertical lines. Tepals elliptic, 23 mm long. Stamens ca. 36, phalanges irregular, fimbriate-appendaged.

LEAF ANATOMY (Irwin 27737).—Surface View: Hairs: none observed. Epidermis: cells on both surfaces square to rectangular; thin-walled. Stomata: tetracytic?, 21 × 12 μm; present in abaxial furrows only.

Transverse Section of Lamina: Dorsiventral; widely V-shaped with margins turned slightly downward. Adaxial surface undulating; abaxial surface furrowed ½ thickness of blade. Epidermis: adaxial and abaxial cells rounded to dome-shaped; few conical; thin-walled. Few abaxial cells replaced by sclerenchyma fiber bundles of 2 or 3 layers. This is followed by one layer of large, thin-walled parenchyma cells. Cuticle: slightly thickened and ridged on adaxial surface; thin and smooth on abaxial surface. Stomata: present in abaxial furrows only; flush with surface; fairly large substomatal chamber present. Stomata protected by projections from walls of furrows. Mesophyll: 3 or 4 layers of small palisade cells followed by compactly arranged spongy cells. Two or three layers of large, translucent cells radially arranged above vascular bundles and abaxial furrows. Vascular bundles: 43; commissural bundles not observed. Two or three large vessels present in each bundle. Two phloem units lying lateral to xylem in flanges of U- or Y-shaped abaxial girder. Small adaxial cap present. Bundle sheath completely surrounding each vascular bundle. Crystals: few in mesophyll. Tannins: few present.

TYPE.—Steep slopes with cut-over gallery forest and adjacent serrado with interspersed outcrops ca. 23 km east of Diamantina, Minas Gerais, Brazil, 900 m alt, 17 March 1970, Irwin et al. 27737 (US, holotype; NY, isotype).

DISTRIBUTION.—Known only from the type-collection.

Vellozia resinosa Martius ex Schultes f

SPECIMENS EXAMINED.—Maguire et al. 44694.

SURFACE VIEW.—Hairs: absent. Epidermis: cells square to rectangular on both surfaces; thin walled. Stomata: paracytic, 21 × 12 μm; present on abaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with median adaxial groove; margins turned slightly inversely. Adaxial surface slightly undulating; abaxial surface furrowed about one-half thickness of blade. Epidermis: adaxial cells rectangular to dome shaped; abaxial cells rounded to dome shaped. Cells on both surfaces thin walled. Subjacent to adaxial epidermis are two to three layers of parenchyma cells interspersed with sclerenchyma strands. Below is a distinct layer of parenchyma cells. Cuticle: thick on adaxial surface; about one-half as thick on abaxial surface; smooth on both surfaces. Stomata: present in furrows; associated with hairlike protrusions; substomatal chamber present. Mesophyll: three to four layers of palisade cells grading into compactly arranged spongy tissue. Two to three layers of large translucent cells arranged radially above vascular bundles and furrows. Vascular bundles: 33; few commissural bundles observed. Two phloem units laterally arranged in flanges of Y-shaped abaxial girder. Adaxial cap on each vascular bundle. Few abaxial sclerenchyma strands present. Bundle sheath completely surrounding each vascular bundle. Crystals and tannins: none observed.

Vellozia sellovii Seubert in Martius

SPECIMENS EXAMINED.—Pereira 2677–Pabst 3513.

SURFACE VIEW.—Hairs: absent. Epidermis: adaxial cells rounded; thin walled. Abaxial cells square to rectangular; thin walled. Stomata: paracytic, 12 × 6 μm; present on abaxial surface and adaxial surface.

TRANSVERSE SECTION OF LAMINA.—Dorsiventral; V-shaped with median adaxial groove. Both adaxial and abaxial surfaces slightly undulating. Epidermis: cells on adaxial surface mostly rounded to dome shaped, few conical; thin walled. Cells on abaxial surface rounded to dome shaped; thin walled. Cuticle: thick on adaxial and abaxial surfaces, slightly ridged. Stomata: present on adaxial and abaxial surfaces; large substomatal chamber present on both surfaces. Mesophyll: four to five layers of indistinct palisade tissue grading into compactly arranged spongy tissue. Two to three layers of large translucent cells arranged in midvein region and radially above each vascular bundle. Vascular bundles: 19; few commissural bundles observed. One to two large vessels present in each vascular bundle, mostly one. Two phloem units lying laterally in flanges of Y-shaped abaxial girder. Inverted V-shaped adaxial cap present on each vascular bundle. No abaxial sclerenchyma strands or layers observed. Distinct layer of parenchyma cells immediately subjacent to abaxial epidermis. Bundle sheath completely surrounding each vascular bundle. Crystals and tannins: none observed.

NOTE: The mesophyll in this species is poorly differentiated and therefore resembles the mesophyll pattern encountered in Barbacenia species. However, all other characteristics indicate that it is in the correct genus.