NEW OR NOTEWORTHY ORCHIDS 
Trichocentrum panamense Rolfe in Kew Bull. 
(1913) 341; Rolfe in Orch. Rev. 22 (1914) 270. 
The type specimen of Trichocentrum panamense is char¬ 
acterized in my notes as “too scrappy to be useful.” It is, 
therefore, a great satisfaction to have received from C. W. 
Powell both pressed and alcoholic material which surely 
represents Rolfe’s species and makes possible a comparison 
between it and its nearest allies. In the original description, 
Rolfe emphasized the four-lobed tip of the spur of the label- 
lum. It is this peculiarity which serves best to differentiate 
T. panamense from T. capistratum Linden & Reichb. f., a 
native of Costa Rica, which is in part characterized by 
a five-lobed spur. In Reichenbach’s herbarium, there is a 
drawing of a species that he identified as being T. eapistra- 
ium (a Liebmann plant) which has a four-lobed spur and in 
general aspect resembles very closely the Powell specimens 
which I take to be representative of T. panamense. It would 
seem that the number of lobes of the spur is variable, or that 
the identification of the Liebmann specimen was carelessly 
attempted, and that it is in reality conspecific with T. pana¬ 
mense Rolfe. As it is impossible to settle definitely at this 
time the status of T. capistratum, it seems best to accept T. 
panamense as a valid species, the four-lobed spur being the 
salient differentiating character. 
Panama, On bush-covered hills east of the Panama 
Canal. (Type in Herb. Kew.): Trail from Fort Sherman to 
mouth of Chagres River, C. W. Powell 371. Sea level. 
Dichaea Standleyi Ames sp. nov. Caules fasciculati, 
plus minusve flexuosi, compress!, distanter foliati. Folia 
decidua, graminea, linearia, acuta, disticha, papyracea. 
Flores singuli e foliorum axillis orientes. Pedunculi folio 
breviores. Sepala lateralia patentia, lanceolata, acuta, quin- 
quenervia. Sepalum dorsale simile. Petala patentia, lanceo¬ 
lata, quinquenervia, in apice acuto triquetra. Labellum 
supra basim cuneatam in laminam crescentiformem expan¬ 
sum, minute glandulosum, septemnervium. Columna valde 
inerassata. 
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