MISSOURI BOTANICAL GARDEN BULLETIN 121 
‘“Mr. Powell has rediscovered the greater part of the previ- 
ously known Panamanian orchids, and in addition a consider- 
able number of new species; also a number which were not 
known from Panama, but were known from neighboring ter- 
ritories. As important as the new species, however, is the 
rediscovery of a long list of species founded by v. Warscewicz, 
and which have never since been rediscovered. We can see, 
therefore, how very important is Mr. Powell’s collection, but 
the importance will be more completely demonstrated when 
we take up the collection in detail. 
‘‘The first enumeration of the orchids of Panama is given 
by Dr. B. Seemann in his ‘Flora Panamensis’ in the report 
of the ‘Herald’ expedition. He mentions 104 species for 
Panama. In my enumeration of the orchids of Central 
America, I was able to list 117 species. Mr. Powell has so 
far collected around 260 numbers that belong to 60 genera 
and actually 184 species, of which not less than 75 are new. 
‘‘Of the genera in the Powell collection the following 19 are 
new for Panama: Camaridium, Campylocentrum, Cattleya, 
Coryanthes, Dimerandra, Gongora, Govenia, Hexadesmia, 
Isochilus, Ionopsis, Laelia, Leochilus, Leucohyle, Liparis, 
Nidema, Osmoglossum, Restrepia, Sarcoglottis, Sigmatostalix. 
‘In contrast to the above we can state that the following 
15 which are already known from Panama, are not in the 
collection: Acineta, Chysis, Coeliopsis, Corymbis, Fregea, 
Kefersteinia, Macradenia, Mesospinidium, Microstylis, Pesca- 
torea, Rhyncholaelia, Scaphosepalum, Selenipedium Tricho- 
centrum, Triphora. 
‘‘To be sure, Mr. Powell, as he has informed me, has found 
several of these, namely, Selenipedium, Chysis, Coeliopsis, 
Acineta, and Pesecatorea, but has not yet been able to get 
herbarium material. Nevertheless, we can state that through 
the collection of Mr. Powell the number of known orchids 
from Panama has been approximately doubled. It is sure 
that no one has made such a contribution to our knowledge 
of these orchids as Mr. Powell through his ‘exceedingly 
mighty collection,’ which contains not only species with con- 
spicuous flowers, but also those in which the size of the blooms 
searcely exceeds that of a pin-head. 
‘*Let us now consider the collection. The number of species 
which have been more or less unknown since they were first 
