?Epidendrum peperomioides Schlechter in Fedde Re- 
pert. Beihefte 8 (1921) 79—Schlechter ex Mansfeld in 
Fedde Repert. Beihefte 57 (1929) t. 91, Nr. 354. 
Ecuapor: Lake Cuicocha, Province of Imbabura, at 3300 meters 
altitude, June 2, 1939, Penland & Summers 836. 
Inthe Ames Herbarium there is a drawing of E’piden- 
drum piperinum from Lindley’s Herbarium, as well as 
the Schlechter plate and description of J. peperomioides. 
There seems to be only a slight difference in the size of 
the labellum between the species proposed by Lindley 
and Schlechter. The species is quite rare. 
Epidendrum polystachyum Humboldt, Bonpland 
& Kunth Nov. Gen. & Sp. Pl. 1 (1815) 852. 
Ecuapor: near Chinche, between San Pedro and Zaruma, Province 
of Loja, at 1900 meters altitude, August 1, 1939, Penland & Summers 
1204. 
E/pidendrum polystachyum is a very interesting species. 
The stems are similar to those of the section Eneyclium, 
also the leaves are borne at the apex of the stem or pseu- 
dobulb. However, the flowers are exactly those of the 
section Kuepidendrum and there can be little doubt that 
it belongs to this section, although it seems to be some- 
what intermediate between the two sections. Mr. Sum- 
mers has written that the plant grew in a nest of vicious 
ants, that the relationship between the orchid and the 
ants interested him, but that because of the ants he could 
not study the plant closely. The association of the ants 
with the hollow pseudobulbs is similar to that found in 
some species of Schomburgkia. 
Epidendrum (§ Euepidendrum) rhombochilum 
L.O. Williams sp. nov. 
Herbae caespitosae, epiphyticae vel terrestres, usque 
ad 4.5 dm. altae. Caules ramosi. Folia linearia vel lan- 
[oJ 
