berulous within. Lateral sepals 2.5-8 mm. long, about 
2 mm. broad, broadly ovate, acute, 2-nerved, sparsely 
ciliate, glabrous within. Petals about 0.18 mm. long and 
0.12 mm. broad, suborbicular, abortive. Lip about 1 
mm. long and 2 mm. broad when expanded, reniform- 
cordate, obtuse, 3-nerved with the lateral portions (in 
natural position ) surrounding the column. Column about 
1 mm. long, slender. Ovary echinulate on the angles 
when immature, becoming smooth with age. 
Cotomaia : pendent epiphytic herbs, wet glen in forest, ““San José,’ 
San Antonio, Department of El Cauca, Cordillera Occidental, at 2400- 
2700 meters altitude, perianth brown, June 28, 1922, Pennell & Killip 
7331 (Type in Herb. Ames No. 47021); same data, Pennell & Killip 
73882. 
Lepanthes micropetala is without close allies, but is 
perhaps nearest to L. polygonoides Smith & Harris in 
floral structure, and to L. pseudocaulescens Smith & 
Harris in vegetative structure. 
Lepanthes pseudocaulescens Smith & Harris in 
Bot. Mus. Leafl. Harv. Univ. 2 (1984) 38, t. 
CoLomsBia: epiphytic herb, open trail, La Cumbre, Cordillera Oc- 
cidental, Department of El Valle, perianth deep purple, September 
19, 1922, Killip 11417. 
The drawing of the petals in the figure cited should be 
corrected so as to show the lobe next to the lateral sepals 
shorter than the lobe next to the dorsal sepal, the apex 
more pronounced and rounded, and the margins obscure- 
ly ciliate. 
Masdevallia (§ Rhombopetalae) Summersii L. O. 
Wilhams sp. nov. 
Herbae parvae, caespitosae, epiphyticae, usque ad 6 
cm. altae. Caules secundarii graciles, cylindracei, unifo- 
[5] 
