MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. IO3 



ORCHIDACEAE. 



* Cypripsdium passerinum Richards. Frank!*. Journ. App. Ed. 2, 3^1 . 



Characterized by the small white flower and obtuse sepals. 

 Montana : Columbia Falls, Mrs. Kennedy^ ^g. 



Cypripedium parviflorum Salisb. Trans. Linn. Soc. i : 77 [Man. R. 



M. 344; 111. Fl. i: 459]. 



In open woods, especially in damp soil, up to an altitude of 2000 m. 



Montana: Helena, 1880 and 1891, 7^. D. Kehey ; Gallatin Co., 

 Mrs. Aldcrson ; Bozeman, 1885, Tzveedy., ^gj. 



* Cypripedium montanum Dougl. ; Lindl. Orch. 528 [Bot. Cal. 2: 



138]. 



Characterized by its 1-3 flowers, its brownish petals and sepals and 

 the dull white purple-veined lip. In open woods in the mountains, 

 up to an altitude of 2500 m. 



Montana: Deer Lodge Co., Miss Emma Ware; Lewis & 

 Clarke Co., Mrs. Math* ; Belt Park, 1889, R. S. Williams, 200; 

 Mission Range, 1883, Canby, Jij. 



* Lysias orbiculata (Pursh) ; Orchis orhiciilata Pursh, Fl. Am. Sept. 



588; Haboiaria orbiculata Torr. Comp. 318 [111. Fl. 1:461]; 



Platanthcra orbiculata Lindl. Gen. & Sp. Orch. 286. 



Habenaria is a subtropical genus, characterized by the long append- 

 ages of the anther, the pistil, etc. In the United States there are only 

 three or four species, confined to Florida and the other Gulf States. 

 The species from the Northwest which have been included in Habe- 

 naria lack the long appendages altogether and were referred to 

 the genus Platant/icra by Lindley. The group shows so many dif- 

 ferences in general habit and the structure of the flower, that Euro- 

 pean botanists in general acknowledge several genera ; three of 

 the groups found in Montana have no European representatives, and 

 only one of these has received a name. The other two are named 

 below. The original Platanthera Richard was constituted in 1818 

 and based on Orchis bi folia; Habenaria orbiculata and H. Hooker i 

 of the northern United States and Canada are congeneric with it. 

 The name Platanthera is, how^ever, antedated by Lysias Salisb., of 

 1812, which was also based on Orchis bifolia. The genus Lysias\2, 

 characterized by the two large basal leaves, the large and spreading 

 sepals, small and narrow petals, entire linear lip, long spur, beak of 



*This specimen has somewhat smaller flowei'S with more or less spotted lip. 



