44- ORCHIDACEAE 155 



46. Lip spurred or saccate. Column short. Leaves wanting. — Species i. 



West Africa (Cameroons). (Under Epipogon Gmel.) Galera Blume 



Lip neither spurred nor saccate. Column long. Leaves stalked, usually 



separated from the flowering stem. — Species lo. Tropics to Transvaal. 



(Including Apostellis Thouars, under Pogonia Juss.) Nervilia Gaud. 



47. {2,S.) Pollen-masses divided into a moderate number of rather large, angular 



segments. Leaves not folded lengthwise. [Subtribc physurixae.] 48 

 Pollen-masses not divided into several large segments 53 



48. Pollen-masses connected with the glands of the rostellum by a strap-shaped 



stalk detached from the tissue of the rostellum 49 



Pollen-masses or their appendages adhering directly to the glands of the 

 rostellum 50 



49. Column with 2 narrow, erect arms. Sepals usually united to the middle. 



Lip with two protuberances at the base and with a two-lobed blade. — 

 Species 4. West Africa, Madagascar, Comoro Islands. 



Cheirostylis Blume 



Column without erect arms, but sometimes auricled. Sepals free. — 



Species 9. Tropical and South-east Africa. (Including Monochilus 



Blume) Zeuxine Lindl. 



50. Lip similar to the other petals, oblong, slightly concave. Stigmas free, 



erect, one on each side of the rather long rostellum. — -Species 2. Mada- 

 gascar and Mascarene Islands Gymnochilus Blume 



Lip distinctly differing from the other petals 51 



51. Column long. Sepals connivent into a tube at the base. Lip with an 



oblong blade. — Species 6. Comoro Islands, Seychelles, Natal, West 



Africa. Platylepis A. Rich. 



Column short 5~ 



52. Stigma with a papillose protuberance on each side. Lip tubercled at the 



base, with a distinctly limited broad blade. — Species 3. Mascarenes, 

 Seychelles, Comoro Islands, and Cameroons. . . . Hetaeria Blume 

 Stigma simple. Lip not tubercled, but sometimes hairy at the base ; blade 

 not distinctly separated, undivided, bent back at the tip. — • Species 3. 

 Mascarene Islands and Madeira. Used as ornamental plants. 



Goodyera R. Br. 



53. (47.) Leaves firm, folded lengthwise. Flowers in panicles. Lip narrow 



below, broadened above. Pollen-masses affi.xed to a slender stalk 



arising from the rostellum ; gland peltate. — Species 2. Tropics. {Corym- 



bis Lindl.) [Subtribe tropidiinae.] . . . Corymborchis Thouars 



Leaves soft, not folded, sometimes scale-hke. Flowers in spikes. . 54 



54. Sepals and petals united into a long tube. Lip uppermost, with 2 lateral 



appendages. Column elongated, two-winged. — Species i. West Africa. 



[Subtribe cranichidina£.] Manniella Reichb. fil. 



Sepals and petals free or almost so, suberect. Lip below. Inflorescence 

 one-sided. — Species 2. North-west Africa (Algeria). [Subtribe spiran- 

 rHixAE.l Spiranthes L. C. Rich. 



