986 OPHRYDE Æ. 
Hab. in Europa ; a Scotia, Bentham, ad Viennam, Mayrhofer. (hab. s. sp. et 
V. V. Sp.) 
Communis in Anglia. In partibus Europe australioribus deest, teste cel. 
Strangways, qui nullibi in Italia invenit, ubi Pl. bifolia ubique divulgatur. 
6. PLATANTHERA Hookeri. 
P. foliis radicalibus binis orbiculatis planis, caule nudo, spicà strictà mul- 
tiflorà, sepalis lateralibus reflexis, labello lineari-lanceolato acuminato 
glabro sepalis parüm longiore, calcare filiformi arcuato ovarii longitu- 
dine, antherz lobis basi adnatis. 
Habenaria Hookeri. Zorrey's MSS. Gray in Ann. Lyc. N. York, 1834, v. 3. 
Habenaria orbiculata. Hooker, Exot. Fl. t. 145. Loddiges, Bot. Cab. t. 1523? 
Hab. in America septentrionali: a Canada, Goldie, ad Virginiam, Hooker. 
(hab. s. sp.) 
Known at first sight from the following by the flowers being sessile in- 
stead of stalked, by its much shorter lip and spur, and by the form of its 
anther; besides which, the whole plant of P. Hookeri is smaller. 
7. PLATANTHERA Orbiculata. 
P. foliis radicalibus binis orbiculatis planis, caule subaphyllo, racemo laxo 
multifloro, sepalis lateralibus reflexis, labello lineari spathulato basi 
pubescente sepalis fer? triplo longiore, calcare arcuato compresso ovario 
duplo longiore, antherz lobis basi elongatis liberis. 
Orchis orbiculata., Pursh. Fl. Am. Sept. 2, 588. 
Habenaria orbiculata. Torrey, Compend. p. 318. d 
Habenaria macrophylla. Hooker! in Edinb. Phil. Jour. vol. vi. 331. Beck Bot. of N. an 
M. St. N. Amer. 349. 
Hab. in Canada; in sylvis opacatis prope Montreal, Goldie. (hab. s. sp-) 
I am indebted to Dr. Torrey for the adjustment of the synonyms of this 
and the preceding species. 
8. PrnATANTHERA Menziesii. 
P. foliis radicalibus binis subrotundo-oblongis erectis, caule subbisquaman 
racemo laxo paucifloro, sepalis obtusissimis, petalis truncatis labello 
lineari obtuso brevioribus, calcare pendulo obtuso apice inflexo ovario 
subequali. 
Hab. in ora occidentali Americe septentrionalis. (hab. s. sp. comm. cd. 
Menzies.) 
9. PrLATANTHERA Schischmareffiana. 
P. foliis radicalibus binis obovato-lanceolatis canaliculatis, spicà su 
multiflora, bracteis oblongis obtusis ovarii longitudine, sepalis oblo zl 
obtusis, petalis labelloque carnosis ovatis obtusis, calcare arcuato £T 
labelli longitudine. 
Habenaria Schischmareffiana. Chamisso in Linnea, 3. 29. 
? Spiranthes unalaschcensis. Spreng. syst. 3. 708. 
Hab. in Unalaschka, Chamisso. (hab. s. sp. comm. cel. Fischer.) 
Planta facie Herminii Monorchis. 
bsecundà 
ngis 
10. PLATANTHERA Koónigii. 
P. caule folioso, foliis inferioribus oblongo-lanceolatis obtusis emargina- 
tisque superioribus linearibus spice fere aequalibus, spicà densà cy lindra 
