Maxillaria angustibulbosa C. Schweinfurth sp. 
nov. 
Herba epiphytica, cum rhizomate repenti flexuoso, 
adscendenti. Pseudobulbi distantes, peranguste cylin- 
dracei, apice unifoliati, vagina conduplicata foliifera 
utrinque velati. Folia elliptico-oblonga vel anguste lan- 
ceolato-oblonga, acuta, breviter petiolata. Inflorescentiae 
singulae, laterales, uniflorae, cum pedunculo vaginis 
pluribus ventricosis fere omnino obtecto. Flos minor. 
Sepalum dorsale valde concavum, oblongo-ovatum, acu- 
tum. Sepala lateralia oblique ovato-triangularia, acuta, 
cum columnae pede mentum conspicuum formantia. 
Petala sepalo dorsali similia, basi obliqua. Labellum in 
circuitu oblongo-ellipticum, supra medium leviter trilo- 
batum; lobi laterales angusti, erecti, apice semiorbicu- 
lares; lobus medius oblongo-ovatus, late obtusus, valde 
carnosus. Columna brevis, crassus, in pedem longum 
extensa. 
Plant epiphytic, with an ascending creeping rhizome. 
Rhizome flexuous, entirely invested by close imbricating 
scarious sheaths. Roots numerous, fibrous, filiform, 
branching, glabrous. Pseudobulbs obliquely inserted on 
the rhizome and subparallel to it, apparently about 4 em. 
apart, linear-cylindric, strongly complanate, unifoliate at 
the apex, finely rugose-striate (in the dried specimen), 
about 4 cm. long, the lower part on each side concealed 
by one or two conduplicate leaf-bearing sheaths. Leaves 
more or less petioled; lamina elliptic-oblong to narrowly 
lanceolate-oblong, acute, cuneate-narrowed to the base, 
up to 16 cm. long and 1.8 cm. wide, that on the pseu- 
dobulb longer and narrower than those present on the 
surrounding sheaths, thinly chartaceous; petiole slender, 
channelled, up to 2.2 em. long (on the pseudobulb). In- 
florescences solitary, lateral, at the base of a leaf-bearing 
sheath below the pseudobulb, ascending, 1-flowered, 
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