24 SELECTED WESTERN FLORA 



1. O. rotundifSlia, Banks. 



Stemless; leaf solitary; scape 4-8 in. high; flowers pink; lip 3-lobed 

 Moist woods and banks, Alta. 



4. EPIPACTIS. Rattlesnake Plantain. 



Lip sao-shaped, with recurved tip; upper sepals and petals united 

 over the lip; pollen masses 2. Herbs consisting of a clump of 

 dark green, somewhat mottled leaves from a fleshy rootstook, 

 and a scape bearing a raceme of whitish downy flowers. 



1. E, repens, (L.) Crantz ; var. ophioides. (Fernald), A. A. Eaton. 



Scape 4-6 in. high ; leaves ovate to oblong, with dark veins bordered with 

 white; lip inflated. Cold damp woods, N. Man.-Alta. 



5. CALYPSO. 



Sepals and petals alike and nearly equal; lip large, inflated, 

 2-parted; column petal-like with the anther just below the apex; 

 pollen masses 2. Bog plants from solid corms, with solitary flowers 

 borne on scapes sheathed with 2 or 3 scaly bracts, and a solitary 

 leaf at the base. 



1. C. bulbSsa, (L.) Oakea. 



Scape 3-6 in. high; leaf almost round; flower richly colored in purple, 

 pink, and yellow ; lip hairy near the point of division ; petals and sepals 

 narrow. (C borealis, Salisb.) Bogs and mossy woods. Rocky Mts. 



6. LISTfiRA. 



Sepals and petals nearly alike, spreading; lip 2-lob6d, drooping; 

 anther erect, jointed to the back of the column; pollen powdery, 

 in'two masses. Small plants with fibrous roots, and a simple stem 

 with 1 or 2 scales at the base, a pair of opposite leaves about the 

 middle, and a terminal raceme of small spurless flowers. 



1. L. convallarioides, (Sw.) Torr. 



Stem 4-10 in. high, pubescent above the leaves; leaves smooth, ovate; 

 flowers greenish yellow, with petals and sepals shorter than the lip. Rich 

 woods, Rocky Mts. 



7. SPIRANTHES. Ladies' Tresses. 



Perianth somewhat gaping, the upper sepal united with the petals, 

 lip spreading and crisped or crinkled, but rarely toothed, and 

 bearing two hard projections at the base; column short, with the 



