HABENARIA 



27 



pair of discs, and these, with their pollen clubs, are in turn 

 withdrawn, at length perhaps resulting in such a plastering 

 of the insect's eyes as might seriously impair its vision, were 

 it not fortunately of the compound sort." 



Of the four hundred species of Habenaria that grow all 

 over the world eighteen are found in our Northeastern States, 

 and about twenty more in the southern and western parts 

 of North America. 



The species may be distinguished from each other by the 

 arrangement of the leaves on the stem, by the shape and 

 length of the spur, and by the cutting, fringing of the lip, 

 and by the colour of the blossoms in the mass. 



KEY TO SPECIES OF HABENARIA 



Two leaves rising from the base of 

 the flower stalk. 



Flower stalk with bracts. 

 Flower stalk without bracts. 



1. Large Round-leaved Orchis. 



2. Hooker's Orchis. 



A single leaf rising from the base of 

 the flower stalk. 



3. Small Northern Bog Orchis. 



Leaves several or numerous. 



Lip entire, not parted or fringed. 



Ovary straight, an exception 



to the characteristic twisted 



4. Small Southern White Orchis. 



ovary. 



Ovary twisted, flowers green- 

 ish yellow, lip lanceolate. 5. Tall Leafy Green Orchis. 



Flowers white, Hp broad at 

 base. 



6. Tall White Bog Orchis. 



Lip with a wavy or toothed mar- 

 gin, flowers orange yellow. 7. Small Southern Yellow Orchis. 



