108 THE ORCHID REVIEW. [APRIL, 1923 
for they contain a whole range of types that formerly were designated as 
purely Andine. This first contribution, he remarks, is of importance for 
the reason that while we possessed only a superficial knowledge of the 
Orchid flora of Panama, the number of species now known to exist in this 
region is almost doubled. 
The first enumeration of Orchids was given by Dr. B. Seemann in his 
“Flora Panamensis,” in the reports of the Herald Expedition, where 
mention is made of 104 species for Panama. In. Dr. Schlechter’s list of 
Orchids from Central America (1918), 117 species are enumerated. Up 
till now Mr. Powell has collected about 260 specimens, representing 60 
genera and 184 species. When we state that no less than 75 of the latter 
have proved to be new, it will be apparent to all how very important and 
praiseworthy is his contribution to Orchidology. Not only are there plants 
which bear flowers of considerable attractive qualities, but there are others 
which produce blooms hardly larger than a pin-head. 
Among the genera included in his collections, the following 19 are stated 
by Dr. Schlechter to be new to the flora of Panama :— 
Sarcoglottis. ‘Cattleya. Leucohyle. Liparis. 
Osmoglossum. Lelia. Restrepia. Govenia. 
Sigmatostalix. Gongora. Isochilus. Hexadesmia. 
Campylocentrum. Nidema. Coryanthes. Camaridium. 
Dimerandra. Ionopsis. Leochilus. 
On the other hand, the following genera are still missing :-— 
Selenipedilum. — Fregea. Scaphosepalum. _ Kefersteinia. 
Rhyncholelia. — Chysis. Pescatorea. Macradenia. 
Trichocentrum. Corymbis. Cceeliopsis. Microstylis. 
Mesospinidium. Acineta. Triphora. 
It is expected that many of these latter will ultimately be found, for 
Mr. Powell has already come across Selenipedilum, Chysis, Cceliopsis, 
Pescatorea and Acineta, but has not been able to contribute herbarium 
specimens. 
The number of species that have more or less disappeared since their 
first discovery, mostly by Von Warscewicz, and have not again been found, 
is rather large. Dr. Schlechter mentions Habenaria Warscewiczii, Masde- 
vallia Livingstoneana, Epidendrum Oerstedii, Brassavola lineata, Cycnoches 
Diane, Cycnoches Warsceswiczii, Catasetum bicolor, Lycaste brevispatha, 
and a whole series of Oncidium species. 
The genus containing the most species is Epidendrum with 33, this 
number being far above all. others, and of these no less than 12 are new. 
Oncidium follows with 15 species, four of which are certainly new. Pleuro- 
thallis contains 14 species, nine being already determined as new, while 
‘Maxillaria has 11 species, and of this number six are new. 
