Notylia rhombilabia C. Schweinfurth sp. nov. 
Herba mediocris, gracilis. Pseudobulbi anguste com- 
planato-cylindracei, unifoliati, vaginis subtribus distichis 
valde imbricantibus superne foliiferis obtecti. Folia lin- 
earia vel lineari-elliptica, subacuta et valde mucronata, 
basi angustata et conduplicata, coriacea. Inflorescentia 
lateralis, basalis, basi abrupte deflexa, supra subdense 
multiflora. Flores reflexi, cum segmentis late patentibus. 
Sepalum dorsale valde fornicatum et concavum, expan- 
sum oblongo-lanceolatum, acutum. Sepala lateralia in 
laminam oblongo-ellipticam profunde concavam longe 
bidentatam connata, apicibus recurvis. Petala linearia, 
faleato-incurva, acuta. Labellum rhombicum vel ovato- 
rhombicum, longe acuminatum, basi cuneatum. Columna 
cylindracea, supra leviter contracta. 
Plant medium-sized, slender. Rhizome apparently ab- 
breviated. Roots fibrous, glabrous, elongate, somewhat 
branched. Pseudobulbs narrowly complanate-cylindric, 
unifoliate, rugose-striate when dry, up to 1.8 em. long, 
invested and partly concealed by two or three pairs of 
distichous deeply imbricating sheaths of which the upper 
one or two on each side are leaf-bearing. Leaves linear 
or elliptic-linear, subacute with a conspicuous caducous 
mucro, slightly cuneate-narrowed below to a condupli- 
cate base, coriaceous, with the mid-nerve carinate be- 
neath, up to 18.2 cm. long and 1.2 cm. wide (sometimes 
very small). Inflorescence lateral, basal, sharply deflexed 
near the base, commonly much surpassing the leaves, 
subdensely many-flowered above, rarely one-branched 
below; peduncle about 11.9 em. or less long, provided 
with several small erect-spreading sheaths which are re- 
mote above and imbricating at the base; raceme 10-13.6 
em. long, straight or flexuous. Floral bracts linear-lan- 
ceolate, the longest ones (at the base of the raceme) a 
little shorter than the pedicellate ovary. Flowers re- 
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