aHExiA, ' OCTANDRIA. MONOGYNTA. 387 



leaves subpetiolate, oval, smooth beneath, slightly hispid 

 above ; margin serrulate-ciliate ; flowers involacrate. M i c h. 

 F/.Lp.m. Pursh Fl.L p. 253. U 10. (. U Elliott 

 Sk.l, 439. R.peliolala IV a It. Car. p. 130. 



Hoot perennial. Stem a foot high, obtusely quadrangular, slen- 

 der, generally simple. Leaves broadly-ovate, scarcely more 

 than half an inch long, distinctly ciliate on the margin, 3-nerv- 

 ed ; the 2 lateral nerves almost marginal. Flowers 3 — 5, ter- 

 minal, each subtended by an involucrum of 2 leaves resembling 

 those on the stem. Corolla purple ; petals roundish. Anthers 

 short, a little curved, scarcely produced at the base. 



Hab. In Delaware. Mu hlenb er g. 



I have described this species from Southern specimens, not 

 having seen any from the Northern States. 



267. (ENOTHERA. Z. 



Calyx tubular, 4-cleft ; segments deflexed, decidu- 

 ous. Petals 4. Stigma 4-cleft. Capsule 4-celled, 

 4-valved. Seeds naked, affixed to a central 4- sided 

 receptacle. Gen. pL 637. Nutt. Gen. I. p. 245. 

 /w J J. p. 319. Lam, III. t. 279. Nat. Ord. Ona- 

 GRARi^ Jiiss. Night JVillow-hcrb. 



* Cafisule elongated^ sessile. 



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

 ovate-lanceolate, flat, dentate ; flowers somewhat spiked ; 

 sessile; stamens shorter than the corolla. Willd. Spec. II. 

 p. 306. Eng. Bot. t, 1 534. M i c h. Fl. I. p. iJ24. Pursh 

 F/. I. p. 261. Big. Bosi.p.'dQ. E 1 1 i o 1 1 Sk. \. p. Ul. 

 Qron. Firg. 254. CEnothera. C o /rf. J^oveb. BG. 



Root annual and biennial. Stem 3 — 5 feet high, terete, hairy, 

 branched. Leaves alternate, distinctly toothed, very pubes- 

 cent ; those near the root on short petioles; the upper ones 

 sessile. Flowers in a terminal leafy raceme or spike. Calyjc 

 with a cylindi ical tube nearly 2 inches in length, coloured ; 

 segments reflexed, and turned to one side, subulate at the tip, 

 nearly one half the length of the tube, united in the middle, 

 villous externally. Petals yellow, inserted into the calyx, obo- 

 vate, or roundish, sometimes emarginate. StuTTiens nearly 

 straight ; Jilaments capillary, inserted into the orifice of the 

 calyx; anthers incumbent, linear, long, yellow. Style fili- 

 form, longer than the corolla; stigma of 4 spreading segments; 

 reflexed at the apex. Cafisule subcylindrical, an inch and a 

 half long, splitting longitudinally into 4 valves, bearing the 

 dissepiments down their middle. Seeds numerous, angular. 



