ORCHIDACE^ 



24. H. macrophylla Goldie, in Edinb. Phil. Journ. 6 : 331 (1822) ; H. macro- 

 HooK Exot. Fl. 2 : sub t. 145 (1825) ; Torr., Comp. 318 (1826 ); i^%^^« 

 Beck, Bot. ed. 1, 349 (1833); Ames, in Rho. 8: 1, fig. (1906), in 

 Gray's Man. ed. 7, 310 (1908); Knight, in Rho. 8: 188 (1906); 

 Macoun, in Ottawa Nat. 20: 139 (1906). 



Platanthera orbiculata LindL, Gen. & Sp. Orch. 286 

 (1835), and of authors in part. 



Habenaria orbiculata Gray, Man. ed. 5, 501 (1867), and of 

 authors in part, not H. oi^biculata Hook. 



Lysias orbiculata Rydb., in Britton's Man. 294 (1901) in 

 part. — L. macrophylla House, in Muhlenb. 1: 127 (1906). 



"Habenaria macrophylla, labello lineari-elongato integerrimo, 

 anthera basi utrinque producta, cornu germine duplo longiore, 

 foliis binis planis elliptico-orbiculatis. 



'''-Hah. Moist shady woods. Island of Montreal. Very rare. 



" Of all the Orchideous plants which I have seen in North 

 America, this is, without a question, the largest and most striking. 

 It must rank next to Habenaria or^biculata {Orchis of Pursh and 

 Nuttall), having, like it, two plane, orbicular, approaching to 

 elliptical, leaves, which spring from immediately above the fas- 

 ciculated root, and which, in this plant, are four times as large as 

 those of H. oj^biculata, measuring from six to eight inches in 

 length, very thin and pellucid, beautifully marked with longitu- 

 dinal and transverse veins. The scape is equally long in propor- 

 tion, and is furnished with a few lanceolate scales. Bi'acteas sim- 

 ilar to these, and shorter than the germen. Flowers large, white, 

 resembling those of H. bifolia, and arranged in a lax spike of 

 about five or six inches in length. The three superior petals are 

 connivent, the uppermost is nearly orbicular, the others ovate, 

 attenuated, the two lateral ones of the same shape, but much 

 larger, reflexed, their bases decurrent with the labellum, which, 



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