6a. Petals dolabriform with globose calli; sepaline lobes 5 mm. long ..... 
Ca Sa Gie See Les CEA EEN S 5 CASO G MARE ORY REE nee OO aS M. gnoma 
7. Sepaline lobes 5 mm. long; petals with a rounded, obscurely erose apex; 
Le PACA ato teach des pen tea bores eee eesss M. irapana 
7a. Sepaline lobes 10 mm. long; petals with a subtruncate apex, apiculate in 
moiddles lip liNGSF cis seen ss cores a meri aware es cede M. venezuelana 
Masdevallia Bangii Schltr. in Fedde, Rep. Beih. 10: 41, 1922. 
Syn.: Physiphon Bangii (Schltr.) Garay in Can. Journ. Bot. 
34: 249, 1956. 
Type: Bolivia; La Paz; Coroico, Ungas, BANG 2424! 
(AMES). 
Epiphytic, caespitose plants, up to 5 cm. tall. Roots fascicu- 
late, flexuous, glabrous. Secondary stem approximate, very 
thin, up to 2 mm. long, one-leaved. Leaves fleshy, erect, 
linear-oblanceolate, obtuse, gradually tapering toward the 
base, up to 5 cm. long and 3 mm. wide. Inflorescence erect, 
filiform, one-flowered, commonly shorter than the leaves, up 
to 2cm. long. Bracts tubular, much shorter than the petiole, up 
to 4mm. long. Flowers delicate, yellowish. Sepals connate into 
a narrow, dorsally ventricose tube, up to 8 mm. in length, free 
at apex; lobes lanceolate to narrowly ovate-lanceolate, dis- 
tinctly carinate dorsally, acute, up to 3 mm. long and | mm. 
wide. Petals obliquely linear-oblong, subtruncate at apex, 
minutely apiculate in the center, very obscurely callose toward 
base along anterior margin, up to 2.2 mm. long and 0.6 mm. 
wide. Lip rather fleshy, from a cordate, oblong-cuneate base 
3-lobed; lateral lobes obliquely triangular, obtuse; terminal 
lobe ovate-rhombic, distinctly 3-dentate at apex, up to 2.2 mm. 
long and | mm. wide. Column short with a three-lobed clinan- 
drium, up to 2 mm. long. Ovary fusiform, articulate with the 
pedicel, up to 10 mm. long. 
Bolivia: La Paz; Coroico, Yungas, BANG 2424!(AMES, US). 
Masdevallia gnoma, Sweet, sp. nov. 
Type: Ecuador; Prov. Napo, vicinity of Papallacta, STACY 
gs.n.! (AMES). 
Epiphytica, minuta, usque ad 2.5 cm. alta; radicibus fas- 
ciculatis, flexuosis, glabris; caulibus secundariis vix ullis, vag- 
4] 
