Masdevallia Summersii is allied to M. simula Reichb. f. 
and to M. popayanensis Lehm. & Krinzl., from both 
of which it is distinguished by the pendent teeth on the 
column and by the shape of the lip. 
Diothonaea angustifolia Schlechter in Fedde 
Repert. Beihefte 8 (1921) 65—Schlechter ex Mansfeld 
in Fedde Repert. Beihefte 57 (1929) t. 85, Nr. 331. 
Ecuapor: island in Lake Cuicocha, Province of Imbabura, at 3100 
meters altitude, May 29, 1939, Penland & Summers 757. 
Diothonaea angustifolia is allied to D. loensis Lindl. 
and perhaps should not be segregated. Among the few 
specimens of D.angustifolia available, it seems that this 
species may be separated by the petals which have three 
nerves, by the broad wing of the column and by the 
mid-lobe of the lip which is much larger than the lateral 
lobes and is cordate at the base instead of cuneate. 
Diothonaea heterothonaea Reichenbach filius & 
Warscewicz in Bonplandia 2 (1854) 112. 
CoLombIA: on trees in dense forests on the highlands of Popayan, 
at 1600-2000 meters altitude, November, Lehmann 8371. 
Diothonaea heterothonaea is a rare species which was 
discovered by Warscewicz in Peru. There is a drawing 
and an analysis of this species (made by Reichenbach) in 
the Ames Herbarium. There can be no doubt that the 
plants collected by Lehmann represent the same species 
as those of Warscewicz. 
Epidendrum catillus Reichenbach filius & Warsce- 
wicz in Bonplandia 2 (1854) 112. 
Ecuapor: terrestrial, along Pastaza River below Machay, Province 
of Tunguragua, at 1350 meters altitude, March 18, 1939, Penland & 
Summers 114. 
et | 
~t 
— 
