Barbacenia sessiliflora L. B. Sm.

Barbacenia sessiliflora L. B. Smith

Barbacenia sessiliflora L. B. Smith, Contr. U.S. Nat. Herb., 35:291, pl. 12: figs. 66–68, 1962.

TYPE.—On rock, Serra Cata Altas, Mun. Santa Barbara, Minas Gerais, Brazil, 2 February 1943, Magalhães 6400 (NY, holotype).

DISTRIBUTION.—Known only from the type-collection.

68. Barbacenia nana L. B. Smith & Ayensu, new species

A B. gentianode Goethart & Henrard, cui valde affinis, foliorum laminis floribusque subdense albo-pubescentibus differt.

Caudex simple, to 8 cm long, ca. 2 cm thick with old leaf-bases. Leaves sulcate throughout; sheaths completely covered; blades 8 cm long, 9 mm wide, subdensely white-pubescent throughout, very finely ciliate with some hairs slightly enlarged at apex.

Scapes not observed. Flowers solitary, appearing sessile, subdensely white-pubescent, red. Ovary slenderly ellipsoid, ca. 8 mm long, scarcely distinct. Perianth-tube (whole) slenderly cylindric, 45 mm long, 3 mm wide. Tepals narrowly elliptic, obtuse, 20 mm long, 4 mm wide. Anthers exceeding the appendages by 9 mm; coronoid appendages united into a tube for most of their length, their free apices narrowly triangular with minute rounded lobes. Style much exceeding the anthers, ellipsoid at apex with 3 narrow apically confluent stigmas.

LEAF ANATOMY.—Ayensu, Smithsonian Contr. Bot., 15:65, fig. 2c, pl. 8c,d, 22b, 47f, 1974.

TYPE.—On rock outcrop by Rio Santo Antônio, Mun. Conceição do Mato Dentro, 18 January 1972, L. B. Smith, Ayensu & Hatschbach (separate no. 28894) 15973 (US, holotype; MBM, isotype).

DISTRIBUTION.—Known only from the type-collection.