188 MONOCOTYLEDONS. ORCHIDE^E. Htibenaria. 



of the stalks of the pollen-mass (1 2) contained in one com- 

 mon little pouch. 



* Tubers 2, undivided. 



1 . O. Mono, lip 3-lobed the lobes crenate obtuse middle one 

 emarginate, segments of the perianth ascending obtuse, spur 

 conical ascending shorter than the germen. p. 250. Mea- 

 dows. 



2. O. mascula, lip 3-lobed crenulate obtuse the middle lobe 

 cleft, segments of the perianth acute the exterior ones reflex- 

 ed, spur linear ascending compressed at the extremity rather 

 longer than the germen. p. 250. Pastures. 



3. O. pyramidalis, lip 3-cleft the lobes equal entire with 2 lon- 

 gitudinal appendages on the upper side near the base, seg- 

 ments of the perianth lanceolate the two outer ones spread- 

 ing, spur filiform longer than the germen. p. 251. Dry pas- 

 tures. 



** Tubers 2, palmated. 



4. O. latifolia, lip slightly 3-lobed the side reflexed, 3 inner 

 segments of the perianth connivent, the spur cylindrical shorter 

 than the germen, bracteas longer than the flowers, p. 25 1 . 

 Marshes. 



5. O. maculata, lip plane 3-lobed crenate, the 3 inner segments 

 of the perianth connivent the lateral ones patent, spur cylin- 

 drical shorter than the germen, bracteas as long as the ger- 

 men. p. 251. Dry pastures. 



2. GYMNADENIA. 



Cor. ringent ; lip spurred at the base beneath. Glands of the 

 stalks of the pollen-mass naked, approximate. Br. 



1. G. conopsea. p. 251. Pastures. 



3. HABENARIA. 



Cor. ringent; lip spurred on the upper side at the base beneath. 

 Glands of the stalk of the pollen-mass naked, distinct, with 

 the cells of the footstalks ad n ate or separated. 



1. H. viridis, spur very short somewhat 2-lobed, lip linear tri- 

 dentate, middle tooth very small, bracteas much longer than 

 the flower, tubers palmate, p. 252. Dry pastures. 



2. H. albida, spur obtuse much shorter than the germen, lip 3- 

 cleft, lobes acute, middle one longest, p. 252. Highland pas- 

 tures. 



3. H. bifolia, spur filiform twice as long as the germen, lip li- 

 near entire, radical leaves binous oblongo-ovate attenuated at 

 the base. />. 252. Marshes. 



