to the claw and with a pair of small spreading triangular- 
dentiform lobules near the base, finely cellular-ciliate on 
the margin, 8-nerved with the lateral nerves extending 
only to the middle. Column short, provided with a mem- 
branaceous wing which is dilated at base, rather abruptly 
dilated above the middle and tridentate at the apex, about 
2 mm. long on the dorsal surface. 
Pleurothallis breviscapa is apparently allied to P. 
Junerea Cogn., but differs in the smaller leaf, pubescent 
peduncles, 1- or 2-flowered inflorescence, ciliolate petals 
and the presence of basal auricles on the lip. A drawing 
of this number shows thick leaves and wine-red flowers. 
Brrrisu Guiana, June 1897. BE. F. im Thurn 181 (Tyee in Herb. 
Kew.) 
Pleurothallis diffusiflora C. Schweinfurth sp. 
nNOv. 
Herba epiphytica, caespitosa. Caules perbreves,mon- 
ophylh, vaginis tubularibus imbricatis omnino tecti. Fo- 
lium obovato-spathulatum, apice rotundatum, inferne 
attenuatum. Inflorescentiae folium multo superantes, 
diffusae. Racemi valde fractiflexi, laxi. Pedicelli longi. 
Sepala lateralia fere omnino connata; lamina elliptica, 
concava. Sepalum dorsale simile. Petala multo minora, 
late spathulata, apiculata. Labellum ovatum, parte apicali 
subgloboso-incrassata, Columna gracilis. 
Plant caespitose, middle-sized, about 18.6 em. high. 
Roots fibrous, glabrous, numerous. Stems very short, 
unifoliate, about 10-14 mm. long, entirely concealed by 
two (or rarely three) tubular scarious imbricating evanes- 
cent sheaths of which the upper is much the longer. Leaf 
obovate-spatulate, gradually tapering to a sessile or short- 
ly petioled base; blade about 8-8.6 em. long and 12-13 
mim. wide, broadly rounded above, often with a minute 
acute tip, marginate, coriaceous; petiole indistinct, up 
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