152 44- ORCHIDACEAE 



Rostellum and stigmatic processes entire, the former prolonged at the 



base into two lateral anther-channels i8 



i8. Anther reflected. Stigma broad 19 



Anther erect. Stigma more or less slender 20 



19. Middle-lobe of the rostellum exceeding the side-lobes. Lip linear, entire, 



with a long spur. Petals broad. — Species i. Southern West Africa. 



(Under Habenaria Willd.) Barlaea Reichb. fil. 



Middle-lobe of the rostellum equalling the side-lobes. Lip oblong or 

 broader, usually lobed. — Species 40. Tropical and South-east Africa. 

 {Cynosorchis Thouars, including Amphorchis Thouars, Hemi peris Frapp., 

 and Camilleugenia Frapp.) Cynorchis Thouars 



20. Stigmatic processes diverging at a right angle. Spur short. — Species i. 



North-west Africa. [Tinea Biv.) Neotinea Reichb. fil. 



Stigmatic processes nearly parallel. — Species 210. (Including Bonatea 

 Willd., Platycoryne Reichb., and Podandria Rolfe). Habenaria Willd. 



21. (14.) Glands of the rostellum enclosed in i — 2 pouches proceeding from 



the rostellum and persisting when the glands are removed. [Subtribe 



SHRAPIADINAE.] 22 



Glands of the rostellum enclosed by the prGcesses of the anther or naked, 

 rarely covered by a thin pellicle proceeding from the rostellum and car- 

 ried away with the glands upon removal. [Subtribe gymna- 



DEMIXAE.] 27 



22. Glands enclosed in 2 separate pouches. Lip not spurred, usually convex 



gibbous and hairy. — Species 10. North Africa. The tubers yield 



medicaments (salep) and mucilage. Ophrys L, 



Glands enclosed in a common pouch 23 



23. Glands 2, free. Lip spurred. — Species 20. North Africa. The tubers 



yield medicaments (salep) and mucilage Orchis L. 



Glands united into one 24 



24. Connective distinctly elongated. Rostellum laterally compressed. Lip 



not spurred ; middle-lobe entire. — Species 4. North-west Africa. 



They yield medicaments and mucilage Serapias L. 



Connective not or scarcely elongated. Rostellum conical at the apex. 

 Lip spurred, rarely without a spur, but then with a 2-cleft middle- 

 lobe 25 



25. Lip with a long spur and two protuberances at the base, equally 3-lobed, 



flat in the bud. — Species i. North-west Africa (Algeria). It 3äelds 



medicaments and mucilage. (Under Orchis L.) Anacamptis Rich. 



Lip with a short spur or without a spur, with unequal lobes, bent inwards 



or rolled up in the bud 26 



26. Middle-lobe of the lip very long, strap-shaped, spirally coiled in the bud. — 



Species i. North-west Africa (Algeria). (Under Aceras R. Br. or 



Orchis L.) Himantoglossum Spreng. 



Middle-lobe of the lip moderately long, 2-cleft, bent over the anther in the 

 bud. — Species 2. North Africa. (Including Barlia Pari.) Aceras R. Br. 



