more or less shorter than the leaves, almost entirely con- 
cealed by several ventricose imbricating sheaths which 
become much shorter near the base. Flower rather small, 
yellow, with somewhat spreading segments. Dorsal 
sepal oblong-ovate, strongly concave, acute, complicate- 
mucronate and dorsally carinate at the apex, about 1.3 
em. long and 6.4 mm. wide. Lateral sepals very obliquely 
ovate-triangular, acute and dorsally carinate at the apex, 
about 1.8 cm. long on the posterior margin, forming a 
conspicuous mentum with the column-foot, about 8.6 
mm. wide at the base. Petals similar to the dorsal sepal, 
oblong-ovate, shortly acuminate, long-adherent to the 
column at the oblique base, about 1.1 em. long and 5.8 
mm. wide. Lip in natural position erect, parallel to the 
column and lightly recurved, when expanded oblong- 
elliptic in outline, more or less 8-lobed above the middle, 
about 1.1 cm. long and 4.6 mm. wide; lateral lobes erect, 
narrow, broadly rounded above; mid-lobe oblong-ovate, 
broadly obtuse, fleshy-thickened with the mid-nerve cari- 
nate beneath, about 8 mm. long and 8 mm. wide, with 
minutely irregular margins; disc with a central longitu- 
dinal thickening which passes into a prominent linear- 
oblong sulcate callus. Column short, stout, clavate, sul- 
cate in front, about 5 mm. high at the back, extended 
into a much longer apically upcurved foot. 
This species appears to lack any close allies. 
Cuzco: Prov. of Paucartambo, Sta. Isabel, Kosfiipata, at 1800 me- 
ters altitude, January 4-5, 1946, C. Vargas 5533 (Tyrer in Herb. 
Ames No. 65927). 
Maxillaria fasciculata C. Schweinfurth sp. nov. 
Herba epiphytica, vagans. Caulis gracilis, teres, re- 
mote pseudobulbifer. Pseudobulbi anguste ellipsoidei, 
unifoliati, basi vaginis pluribus distichis imbricatis celati. 
Folia in vivo valde carnosa, linearia, plusminusve condu- 
plicata, apice subacuta vel rotundata. Flores e vaginarum 
[ 162 ] 
