* 484 GVNANDRIA MONANDRU. 



lis rotundatis, binis la 

 teralibiis dentatis; cor 

 nu germine breviore. 



the two lateral toothed; 

 horn shorter than the 

 germ. 



T 



Mich. 2. p. 156. Sp.pl. 4. p. 9. Pursh, 2. p. 585. Nutt. 2. p. 188. 



Root tuberous. Stem erect, one to two feet high, slightly angled^ leafy, 

 glabrous. Leaves four to six inches long, one wide, lanceolate, nerved, 

 sheathing at base. Flowers somewhat crowded, in a terminal spike. Pe- 

 rianth Six-parted, yellow, the three exterior segments oval, entire, equal; of 

 the interior the two lateral are smaller than the exterior, obovate, obtuse, 

 incised or sharply toothed, the lower or labellum a little longer than the ex- 

 terior segments, lanceolate, fringed, fforfi about half as long as the germ, 

 Pikiment (Caudicula, Richard) short, thick, bifid, forming the back and up- 

 per part of the genitaUferous column. (Gynostemium, R.) Pollinia in- 

 curved, ovate, ahernate at the summit, with a white gland on one side, open- 

 ing at the summit and discharging elastically the pollen, which appears to 

 be attached originally to a viscous pedicel. Germ inferior, somewhat spiral, 

 attenuated toward the summit. Style short, thick, forming the lower part of 



the ^nostemium. Stigma depressed, glandular. Seeds very numerous, 

 small. 



Grows in damp soils along the margin of swamps, commonly intermin- 

 gled with the two preceding species. It is readily distinguished by its small- 

 er and more densely clustered flowers. - 



Flowers July — August. 



4. Lacera. Mich. 



O. labello petahs I Lip twice as long as 

 dupIo.Jongiore, tripar- the petals, three-part- 

 tito, lacmiis muhificlis; | ed, with the "segments 

 petahs exterioribus many cleft; exterior 

 ovato-Ianceolatis, inte- petals ovate lanceolate, 

 rioribus linearibus; the interior linear; 



cornu _germine brevi- horn shorter than the 



♦ 



ore. 



germ 



Mich. 2. p. 156. Pursh, 2. p. 586. 



Root Stem twelve to eighteen inches high, slender, glabrous. 



Leaves narrow lanceolate, nerved, sheathing at base. Flowers rather scat- 

 tered along a terminal spike. Bracteal leaf shorter than the germs. Exte- 

 rior segments of the perianth equal, ovate lanceolate, rather acute, of the 

 mtenoi- the two lateral are very narrow, strap-shaped, rather obtuse, as long 

 as the exterior, the labellum twice as long, three parted from the middle, so 

 that the undivided base is nearlv as lonrr a, t},o Eo„m«ntc 



