ORCHIDACBiE 23 



Flowers yellow. 



1. C. parvifl6rum, Salisb. Small Yellow Lady's Slipper. 



Stem S-15 in. high, leafy, 1-several-flowered ; the outer divisions of the 

 perianth purplish, and the lip strongly marked with purplish spots or lines, 

 and not as much inflated as in the next species; usually slightly fragrant. 

 Low woods, Man.-Alta. 



2. C. pubescens, (Willd.) Knight. Larger Yellow Lady's Slipper. 

 Somewhat larger than the preceding, more hairy, and with larger lip leas 



strongly marked with purple; often growing in clusters. Low woods or 

 moist prairie, Man.-Alta. 



Flowers pink. 



3. C. hirsiitum, Mill. Showy Lady's Slipper. 



Stem stout, leafy, 1-2 ft. high, hirsute, usually in clumps; leaves ovate, 

 sepals rounded, rather longer than the petals; lip oblong, much inflated, 

 white marked with crimson. (C spectabile, Salisb.) Moist woods, Man. 



4. C. passerinum, Richards. 



Stem 6-10 in. high, softly pubescent; leaves lanceolate; upper sepal nearly 

 circular, yellowish; lip globular, pink, spotted with crimson at the base. 

 Wooded valleys of foothills of Rocky Mts. 



2. HABENARIA. 



Flowers small, greenish in our species, arranged in a spike or 

 raceme, each in the" axil of a bract; lip entire or toothed, but not 

 fringed in any of our species; pollen in masses. 



1. H. bracteata, (Willd.) R. Br. 



Stem rather stout; lip 2 or 3-toothed at the apex, more than twice the 

 length of the spur; flower bracts 2-4 times the length of the flowers. Moist 

 thickets, Man.-Alta. 



2. H. hyperborea, (L.) R. Br. 



Stem more slender than the preceding; lip entire, lanceolate, curved 

 upward, and about the same length as the spur; flower bracts not projecting 

 above the flower. Cold moist woods or bogs, Man.-Alta. 



3. ORCHIS. 



Sepals and petals almost equal; lip spurred at the base, turned 

 downward to join with the base of the column; pollen in coarse 

 waxy grains cohering in two large masses; leaves 1 or 2; flowers 

 oink, in a raceme. 



