GYNANDRIA.— MONANDRIA, 315 



pollinia naked and distinct ; cells of the stalks 

 adnate, or separated. 



* * Anther persistent, parallel with the stigma. Pollinia 



affixed to the summit of the stigma, composed of an- 

 gular grains, or farinaceous. 



510. GOODYERA. Cor. ringent ; the 2 lower petals 



placed beneath the gibbous lip, which is undi- 

 vided at the extremity. Column free. Pollen 

 angular. 



511. NEOTTIA. Cor. ringent; the 2 lower petals 



placed beneath the lip, which is beardless ; in- 

 terior petals connivent. Column apterous. Pol- 

 len farinaceous. 



512. LISTERA. Cor. irregular. Lip 2-lobed, pen- 

 dent. Column apterous. Anther fixed by its 

 base. 



* * * Anther terminal, inserted, persistent. Pollinia 

 farinaceous or angular, affixed by the base or below 



the extremity. 



513. POGONIA. Petals 5, distinct, without glands. 



Lip sessile, cucullate, internally crested. Pol- 

 len farinaceous. 



514. TRIPHORA. Petals 5, distant, equal, and con- 



nivent, without glands. Lip unguiculate, cu- 

 cullate. Column spathulate, flattened, apter- 

 ous. Pollen farinaceous. 



515. CALOPOGON. Petals 5, distinct. Lip behind 



(or inverted,) unguiculate ; the lamina bearded. 

 Column free. Pollen angular. 



516. ARETHUSA. Petals 5, connate at the base. 



Lip beneath growing to the column, cucullate 

 above, and crested internally. 



* * * * Anther terminal, moveable, deciduous. Pollinia 



at length becoming waxy. 



517. TIPULARIA. Petals spathulate, spreading. Lip 



sessile, entire, with a conspicuous spur at the 

 base beneath. Column apterous, porrected, 

 free. Anther operculate, persistent ; pollinia 

 4, parallel. 



