TROPICAL AMERICAN ORCHIDS 
centre of lip from base to apex fleshy-thickened, the thicken¬ 
ing in the apical portion especially prominent beneath and 
terminating in a subapical mucro. Column stout, short, 
1 cm. long, the margin of the clinandrium lobulate and 
minutely ciliate, anterior face concave; foot about 7 mm. 
long, sulcate. 
Maxillaria albiflora is allied to M. pulla Linden & 
Reichb. f., but has shorter scapes, larger flowers of different 
color, and a distinctive labellum. M. trinitatis Ames is a 
stouter plant with larger leaves, smaller flowers, and dif¬ 
ferent labellum. 
Trinidad, Tucuche, W. G. Freeman & R. 0. Williams 
10086, January 10, 1922. Flowers white, fragrant. (Type 
in Herb. N. Y. Bot. Card.) 
Maxillaria confusa A. & S. sp. nov. Herha Maxillariae 
pachyacro Schltr. similis. Planta nana, caespitosa. Pseudo- 
bulbi parvi, monophylli. Folium elliptico-oblongum. Pedun- 
culi uniflori, pluribracteati. Flos magnus. Sepala similia, 
anguste triangulari-lanceolata, elongata, lateralia obliqua. 
Petala sepalis lateralibus similia sed minora. Labellum trilo- 
batum, expansum obovato-oblongum, medio callo ornatum. 
Mentum conspicuum. 
Plant vegetatively small for the genus, about 13 cm. 
tall, apparently caespitose. Roots numerous, fibrous, flex- 
uous, branched. Pseudobulbs monophyllous, mostly con¬ 
cealed by a pair of basally imbricating distichous leaf-bear¬ 
ing sheaths, complanate-cylindric, about 1.6 cm. long, 
finely rugose when dry. Leaf elliptic-oblong, stoutly petioled; 
petiole laterally flattened, channelled, 1-2.2 cm. long; blade 
10 cm. long, 2.2 cm. wide in the middle (leaves on the sheaths 
much smaller), rounded or perhaps acute at the apex (tip 
split and broken in our specimens), cuneate-narrowed below, 
coriaceous, the mid-nerve sulcate above and conspicuously 
carinate beneath. Inflorescence much shorter than the 
leaves. Peduncles 1-flowered, about 4.5 cm. long (including 
the ovary), filiform, with four tubular sheaths, the upper¬ 
most clasping and exceeding the ovary. Flower large for the 
plant, erect, perianth segments parallel, and but very 
57 
