NEW OR NOTEWORTHY ORCHIDS 
two parts; the lower part triangular-ovate, about 1 mm. 
long, 3-nerved; the upper part abruptly caudate, consisting 
of stout fleshy tails which are about 3 mm. long. Petals 
minute, narrowly oblong-pandurate, about 1.6 mm. long, 
very obliquely 3-toothed at the apex, oblique at the base, 
1-nerved. Labellum oblong, slightly broader above the mid¬ 
dle, 2.3 mm. long, 1 mm. wide, broadly rounded at the apex, 
recurved in natural position. Disc with a pair of low slightly 
converging keels above the middle, 3-nerved. Column ar¬ 
cuate, about 1.9 mm. long at the back, winged throughout. 
Masdevallia exigua is represented at present by a single 
small dried specimen. In habit it resembles M. Simula 
Reichb. f., but has a simple lip. It is apparently allied to 
M. pygmaea Kranzl., but it has longer leaves, much shorter 
sepaline tails and differently shaped petals and lip. 
Costa Rica, Bosque de Aguilio en La Palma, A. M. 
Brenes (75) 405, November 1922. 1190 meters altitude. 
(Type in Herb. Ames No. 31112.) 
Masdevallia fimbriata A. A: A. sp. nov. Herba per- 
parva, caespitosa. Caules minuti, monophylli. Folium ob- 
longum vel peranguste ellipticum, acutum, valde carnosum 
et in sectione triquetrum. Pedunculi diffusi, valde pubes- 
centes. Flos extus longe et laxe pubescens. Sepala caudata, 
lateralia alte connata, nervis extus carinatis. Petala lan- 
ceolata, fimbriata. Labellum obovatum, marginibus basi 
excepta valde fimbriatis; discus ultra basim dense papillosus. 
Plant very small, caespitose, up to 2.8 cm. high. Roots 
numerous, fibrous, flexuous, filiform, glabrous. Stems mi¬ 
nute, about 2 mm. long or less, concealed with the base of 
the jointed petiole by a scarious tubular sheath. Leaf 
petioled; lamina linear to narrowly oblong-elliptic, up to 2 
cm. long and 2.5 mm. wide, very fleshy and triquetrous in 
section in the fresh specimen, acute and minutely tridentic- 
ulate at the tip, longitudinally sulcate on the upper surface 
and angled beneath; petiole indistinct, about 5 mm. long. 
Inflorescence few-flowered (in one case 4 remote pedicels are 
present), up to 4 cm. long. Peduncle and rachis prominently 
18 
