352 Order 52.— ONAGRACB^. 



1 J. deciirrens DO. Glabrous ; fls. i-merous ; sis. erect, with slender branches, 

 and winged by the decurreiit Ivs. ; Ivs. lanceolate, sessile ; caps, clavate, 4-angled, 

 thrice longer than the pedicel, crowned with the lance-ovate, acuminate calyx 

 lobes. — y In swamps, .Va. to M* and La., common. Sts. 6 to 12 to 20' high. 

 Lvs. 2 to 3' long. Pis. showy, expanding about 9". Jl. — Sept. 



2 J. grandiflora Mx. Hirsute; fls. i-merous; st. creeping at base, erect; Iva. 

 elliptical, the lower spatulate, acutish, short-petioled ; fls. largo; ova. slender, 

 shorter than the pedicels; sep. lanceolate, acute. — 2| Bogs and ditches, S. Car. 

 Ga. (Savannah, Feay and Pond). Creeping stems several feet long, branches 1 to 

 2f high. Ova. with 2 tubercles at base. Fls. expanding nearly 2'. May— Aug. 



3 J. leptoo^rpa N"uLt. Hirsute; fis. mostly G-merous, small; st. erect; lvs. 

 lanceolate, subsessile ; caps, linear, much longer than the pedicel, crowned with the 

 lanceolate, acuminate sep. — (T) Fla. and La. to Mo. St. nearly simple, 1 to 2f 

 high. Caps, nearly 2' long, terete, at length nearly smooth. 



4 J. rdpens L. Nearly glabrous ; fls. 5-merous, large ; St. creeping, ascending ; 

 lvs. lanoe-oval, mostly obtuse, tapering to a slender petiole ; caps, cylindrical, mucli 

 shorter than the long pedicel, with 2 bracteoles at base. — Zf Ponds, La., Ark. 

 Sts. long creeping and floating. Petioles and pedicels about 2' long. • ' Jn. — Aug. 



3. (ENOTHE'RA, L. Evenino Primrose. (Gr. owof, wine, fij^pau, 

 to hunt ; the root is said to cause a, thirst for wine.) Calyx tube pro- 

 longed beyond the ovary, deciduous, segments 4, reflexed ; petals 4, 

 equal, obcordate or obovate, inserted into the top of the calyx tube; 

 stamens 8 ; capsule 4-celIed, 4-valved ; stigma 4-lobed ; seeds many, 

 without a coma. — Herbs with alternate lvs. Fls. yellow. 



§ Fls. nocturnal (open by night only). Ovary sessile, oblong Nos. 1 — 3 



§ Fls. diurnal. — Calyx tube not longer than the ovaiy. Nos. 4, 5 



— Calyx tube iibotit twice longer than the ovary Nos. 6—8 



— Calyx tube 3 or 4 times longer than the ovary Noa. 9, 10 



1 CB. biennis L. St. erect, hirsute; lvs. ovate-lanceolate, repand-dentiadate ; 

 fis. sessile, in a terminal, leafy spike ; cal. tube 2 to 3 times longer than the ovary ; 

 stam. shorter than the obcordate or obtuse petals ; caps, oblong, obtusely 4-angled. — 

 ® and (2) Common in fields and waste places, U. S. and Brit. Am. St. mostly 

 simple, 2 to 6f high. Lvs. 3 to G' long, roughly pubescent, slightly toothed, ses- 

 sile on the stem, radical ones tapering into a petiole. Fls. numerous, large, open- 

 ing by night and withering the next day. Jn. — ^Aug. 



/J. murioXta. St. muricato or strigosely hirsute, red ; petals scarcely longer 



than the stamens. St. 1 to 2f high. (CE. murioata Ph.) 

 ■y. GBANDlFLfiRA. Petals' much longer than the stem,- rather deeply obcordate. 



St. branched. •]■ (CE. grandiflora Ait.) 

 S. PARVIFLORA. Petals small, about as long as the stamens ; tube of the oal 



elongated. (CE. parviflora L.) 

 e. cuuciXta. Petals linear-oblong, shorter than the stamens. (CE. cruoiata 



Nutt.) 

 C CANisCEKS Torr. & Gr. Petals enlarged ; whole plant canescently hairy. — 



Iowa, etc. 



2 CE. rhombip^tala Nutt. Tall, erect ; lvs. lance-linear, sessile, acute, spread- 

 ing, lower ones petiolate, becoming somewhat pinnatifid ; spike strict, fls. large, 

 longer than the leafy bracts ; cal. tube very slender, 3 or 4 times longer than thq 

 sessile ovary; petals riiomiic-elliptical, acute or acuminate; caps, small. — Wis. 

 (Dr. Parry) to Ark. (Prof. Eobertson.) A flne species, with a profusion of straw- 

 yellow fls. Jn. 



3 CE. sinuata L. St. pubescent, diffusely branched or subsimple, decumbent 

 and assurgent ; lvs. pubescent, oblong-oval, sinuate-dentate, or incised ; fla. axil- 

 lary, solitary, sessile; cal. vilfous, the tube twice longer than the ovary;' caps, 

 prismatic— (I) Fields, N. J. to Ga. and La. St. 3 to 8 long. Lvs. often pinnati- 

 fid. Fls. about 6", diam., pale yellow, turning roseate in withering. 



fl. MINIMA Nutt. Low, simple, 1-llowered; lvs. nearly entire. — Pine barrens, 

 N. J. to Ga. (CE. minima, Ph.) 



