ORCHIDACE.E. 805 



Perianth without any spur or pouch.* 



Lip hanging, longer than the sepals, very narrow or 

 divided into narroiv lobes. Flowers yellowish- 

 green. 

 Stem with 2 opposite, broad leaves. Flowers 



pedicellate. Rootstock fibrous .... 6. Listeea. 

 Stem leafy at the base. Flowers sessile. Root- 

 stock tuberous. 

 Sepals arching over the column. Lobes of 



the lip linear 13. Aceeas. 



Sepals spreading. Lobes of the lip oblong . 15. Ophrys. 

 Lip hanging, very convex or large, brown or 

 spotted. 

 Flowers 1 or 2 only, very large. Lip inflated, t 



above an inch long 16. Cypeipede. 



Flowers several. Lip convex, not above half an 



inch long 15. Opheys. 



Lip erect or spreading, not longer than the sepals, 

 concave or flat. 

 Flowers rather large, in a loose, leafy spike. 

 Stem leafy, usually a foot high or more. 



Flowers pedicellate, drooping 4. Epipactis. 



Flowers sessile, erect 5. Cephalantheea. 



Flowers small (white or greenish-yellow). Stem 

 seldom above 6 inches high. 

 Flowers pedicellate, erect. Stem bulbous at 

 the base. 

 Sepals broad-lanceolate, about 1 line long . 1. Malaxis. 

 Sepals narrow-linear, fully 2 lines long . . 2. Lipaeis. 

 Flowers sessile, horizontal or drooping. Stem 

 not bulbous. 

 Flowers greenish- yellow, all round the 



spike. Rootstock tuberous .... 14. Heeminittm. 

 Flowers greenish- white. Spike one-sided, 



straight. Rootstock creeping, fibrous 10. GrOODYEEA. 

 Flowers white. Spike one-sided, spiral. 



Rootstock almost tuberous .... 9. Spieanth. 



I. MALAXIS. MALAXIS. 



A single species, distinguished as a genus from Liparis by the pro- 

 portion of the petals, and by the pollen-masses, which are club-shaped, 

 in 2 pairs, both suspended from a gland which terminates the column. 



* A single specimen has been occasionally found of species of Orchis and 

 Habenaria, in which the flowers are all deformed, without any spur, but such in- 

 stances are very rare. 



