genera recognized by Pfitzer (in Engler and Prantl: Die 
natirlichen Pflanzenfamilien), or by Schlechter (in No- 
tizbl. Bot. Gart. u. Mus. Berl. 9). 
Bentham and Hooker admitted as valid genera, Ar- 
nottia 4.Rich., Bartholina R.Br., Bicornella Lind, 
Bonatea Willd., Cynorchis Thou., Diplomeris D.Don, 
Glossula Lindl., Habenaria Willd., Hemipilia Lindd., 
Herminium Z., Holothrix 1.C. Rich., Huttonaea Harv. 
and Stenoglottis Lindl. Of these genera only Habenaria 
is represented in the American flora. Pfitzer, however, 
regarded Habenaria, as limited by Bentham and Hooker, 
to be a conglomerate concept and he withdrew from it 
and returned to generic standing Barlaea Reichb f., Coe- 
loglossum Hartm., Deroemera Reichb.f., Gymnadenia 
R.Br., Montolivaea Reichb.f., Nigritella L.C. Rich., 
Perularia Lindl., Platanthera LC. Rich., Ponerorchis 
Reichb.f., and Roeperocharis Peichb.f., to which genera 
Schlechter later added Blephariglottis Raf, Gymnaden- 
iopsis Rydb., and Leucorchis 1”. Mey. Whatever view 
finally prevails with regard to the number of genera to 
be accepted as valid concepts, the point of chief interest 
for the student of Central American orchids is that the 
genera of the Habenaria alliance are overwhelmingly 
Eurasian and African and that Habenaria and Platanthera 
(the only Central American representatives of this alli- 
ance) are found in the Old World as well as in the New 
World. 
HaABENARIA Willd. 
The Honduranian representatives of this genus be- 
long to the section characterized by protuberant stigmas. 
They are terrestrial or rarely subaquatic and, with few 
exceptions, have greenish flowers. 
[18 ] 
