166 OCTANDRIA.— MONOGYNIA. 



ciliate, sprinkled with appressed hairs on both 

 sides. 

 HAB. Wet meadows. July — Aug. U • Stem quad. 

 I ft. high ; JI. large , pur p. 



2. R. mariana : very hairy ; leaves lanceolate-acute 



at each end, 3-nerved, subpetiolate ; calyx tubular, 

 nearly smooth. 

 HAB. Bogs and wet woods. Aug. U. A foot high: 

 stem subterete ; Ji. purp. 



3. R. ciliosa : stem subquadrangular, smooth ; leave? 



subpetiolate, oval, smooth beneath, slightly hispid 

 above ; margin serrulate-ciliate ; flowers invo- 

 lucrate. 

 HAB. Delaware. A foot high, slend. ; leav. small : 

 JI, purp. ; pet. roundish. 



269. OENOTHERA. Night willow-herb. Onagrario'. 

 * Capsule elongated, sessile. 



1. (E. biennis: stem villous and scabrous; leaves 



ovate-lanceolate, flat, dentate ; flowers somewhat 

 spiked, sessile : stamens shorter than the corolla. 

 HAB. Fields. June— Oct. ;?. Stem 3—5 ft. 

 high; leav. alt. ;fl. racewi., yellow. 



2. CE. muricata : stem purplish, muricate ; leaves lan- 



ceolate, flat ; stamens longer than the corolla. 

 HAB. Fields. Fl. smaller. 



3. CE. parviflora: stem smooth, subvillous ; leaves 



ovate-lanceolate, flat ; stamens longer than the co- 

 rolla. 

 HAB. Fields and woods. £. -f-. 



4. CE. grandiflora : stem nearly smooth, branched: 



leaves ovate-lanceolate, smooth ; stamens decli- 

 nate. 

 HAB. Fields. July— Aug. £. Stem 3— 5 ft. high, 

 terete ; JI. large, yellow. 



5. CE. sinuata : stem diffused, pubescent ; leaves oval- 



oblong, sinuate-dentate; flowers axillary, villous"; 

 capsule prismatic. 

 0. minima: stem humble, simple, 1 -flowered ; 

 leaves entire. 



