NOTES ON EPIDENDRUM 
BY 
CHARLES SCHWEINFURTH 
Epidendrum microbulbon Hooker in Icon. PI. 
4 (1841) t. 347. 
A recently acquired collection referable to this spe- 
cies is somewhat at variance with the diagnostic charac- 
ters cited in the key in Ames, Hubbard and Schwein- 
furth: The Genus Epidendrum in the United States and 
Middle America (1936) 17, 18, 19. The leaves in all of 
the plants of this collection are several times to many 
times shorter than the inflorescence; two of the plants 
have 1-leaved pseudobulbs and the tips of the lateral lobes 
of the lip are not scaly as is the mid-lobe. 
Mexico, State of Sonora, Tepopa, Rio Mayo. June 2, 1936. 
H.S.Gentry 2214. 
Epidendrum pseudo-Wallisii Schlechter in Fedde 
Repert. Beihefte 19 (1928) 124. 
In a large collection of specimens received from Costa 
Rica, a plant referable to this species has been recognized. 
Asin recent years only this single specimen of £7. pseudo- 
Walhsu has been found among the large collections re- 
ceived for study, it is evident that the species is among 
the outstanding rarities of the orchid flora of Middle 
America. At the base of the stem there is present a sin- 
gle fibrous, stout, branching root. The leaves differ from 
those described and from the ones represented in a draw- 
ing from the type in being longer and more narrowly 
elliptic-oblong, 10.38—12.2 em. long and only about 2 em. 
wide. A still more striking discrepancy from the typical 
form appears in the inflorescence which is not properly 
a terminal raceme, but consists of a series of short lateral 
2-flowered racemes arising opposite the upper leaves. The 
[127 | 
