426 
LXXXIX. ORCHID ACEAS. 
I. Anther 1, terminal. Pollen-masses smooth (not granular') : pollen cohe- 
ring firmly in a definite number of simple lobes, each of which is a 
pollen-mass, and finally waxy (or rarely pulverulent when bruised in 
water). 
1. Malaxis. Outer sepals widely spreading. Lip superior, quite entire 
and similar to the other inner sepals. Spur 0. Anther opening 
longitudinally. Pollen-masses 4, in a double row. 
2. Lipaius. Outer sepals widely spreading. Lip inferior, quite entire, 
larger than the other linear inner sepals. Spur 0. Anther opening 
longitudinally. Polien-masses 4, in a single row. 
3. Couallorhiza. Sepals converging. Lip inferior, with 2 small 
lobes at the base. Spur free or adnate to the ovary. Anther 
opening transversely. Pollen-masses 4, oblique. 
II. Anther 1, attached to the bach of the column, or subterminal. Pollen- 
masses granular : pollen in a lax state of cohesion, or combined into 
granules or masses (which are not waxy) elastically cohering. Lip 
inferior. 
4. EripACTis. Perianth eonnivent or spreading. Lip free from the 
column and not embracing it, much contracted or articulate in 
the middle ; upper lobe entire at the apex, lower concave. 
5. Listera. Lip linear or oblong, 2-lobed at the apex. 
6. Spiranthes. Perianth ringent; the 2 lateral outer sepals erect, 
placed under and including the base of the lip, oblique at the base 
and more or less decurrent on the ovary. Lip beardless, canalicu- 
late, embracing the column and cohering below with its produced 
base, with 2 callosities below the middle, entire at the apex. 
7. Goodyera. Perianth ringent ; the 2 lateral outer sepals spreading, 
placed under and including the gibbous base of the lip. Lip entire 
at the apex, free from the column, flat above and without cal- 
losities. 
III. Anther I, placed on the summit of the column. Pollen-masses farina- 
ceous, collected into small lobes or granules elastically cohering together. 
Lip superior. 
8. Epipogium. Perianth spreading. Ovary not twisted. 
IV. Anther 1 , adnate to the face of the stigma. Pollen-masses granular : 
pollen cohering in an indefinite number of finally wuxy granules or 
lobes, attached by an irregular elastic cellular tissue along the axis of \ 
the pollen-mass. Lip inferior. 
9. Orchis. Lip spurred. Glands of the stalks of the pollen-masses 
contained in a common little pouch. 
10. Gymnadenia. Lip spurred. Anther-cells contiguous, parallel. 
Glands of the stalks of the pollen-masses naked, approximate. 
11. IIabenaria. Lip spurred. Anther-cells separated, diverging at the 
base. Glands of the stalks of the pollen-masses naked, distant. 
12. Aceras. Lip without a spur. Glands of the stalks of the pollen- 
masses contained in a common little pouch. 
13. Herminium. Lip without a spur. Glands of the stalks of the pollen- 
masses naked, distinct. 
14. Ophrys. Lip without a spur. Glands of the stalks of the pollen- 
masses each in a distinct little pouch. 
V. Anthers 2, lateral, with a central one sterile and pctaloid. 
15. Cypuipedium. Lip large, inflated. 
