462 ORCHIDE^ 



8. Epip6gum. — Brown saprophytes ; flowers stalked, pale 

 yellow, not inverted ; lip posterior, 3-lobed, with a short, inflated 

 spur ; pollinia 2, united ; pollen granular. 



9. Cephalanthera. — Leafy plants ; flowers not stalked, erect ; 

 Up anterior, constricted and lobed, pouched; column long; 

 pollinia 2, united ; ovary twisted. 



10. Helleborine. — Leafy plants; flowers stalked, drooping; 

 lip anterior, constricted and lobed; column short; pollinia 2, 

 united ;^oz'«ry straight ; pedicel twisted. 



11. Orchis. — Leafy plants ; flowers not stalked, hooded; lip 

 anterior, 3-lobed, spurred ; pollinia 2, distinct, with their glands 

 in one p9uch. 



12. Aceras. — Leafy plants; flowers not stalked, hooded; lip 

 anterior, 4-lobed, not spurred; pollinia 2, with their glands in one 

 pouch. ^ 



13. Ophrys. — Leafy plants; flowers not s\.2iiked ; lip anterior, 

 variously lobed, not spurred ; pollinia 2, with their glands in 

 distinct pouches. 



14. HERMfNiUM. — Leafy plants; flowers not stalked; lip 

 anterior, 3-lobed, pouched ; pollinia 2, distinct, on naked glands. 



15. Habenaria. — Leafy plants; flowers not stalked; hooded; 

 lip anterior, spurred ; pollinia 2, distinct, on naked glands. 



** Anthers 2 



16. Cypripedium. — Leafy plants; perianth spreading; lip 

 large, inflated ; pollen granular ; ovary not twisted. 



1. Malaxis (Bog Orchis), a genus containing only the one 

 species M. paludosa, the smallest British orchid, 2 — 4 in. high, 

 with angular stem ; 3 — 5 oval leaves, fringed with bulbils that grow 

 into new plants ; and numerous minute, yellowish-green flowers on 

 twisted stalks, in a dense raceme. — In bog-moss ; uncommon. 

 Growing as an epiphyte on the moss, and easily overlooked. 

 (Name from the Greek malaxis, softening.) — Fl. July — September. 

 Perennial. 



2. LfpARis. — Very similar little plants, with usually only 2 

 leaves, inverted flowers on twisted stalks and a longer, slender 

 column. (Name from the Greek liparos, greasy.) 



I. L. Loeselii (Two-leaved Liparis, Fen Orchis). — The only 

 British species, with 2 oblong-lanceolate, acute, stalked, radical 

 leaves; a. tnanglsiT pedwicle, 4 — 8 in. high; and 6 — 12 yellowish 

 flowers on twisted pedicels in a loose raceme. — On bog-moss in 

 the eastern counties ; very rare. An epiphyte. — Fl. June, July. 

 Perennial. 



