138 ONAGRACEiE. (EVKNING-rUIMIJOSE FAMILV.) 



G-8. Stvlc ilecliuod : stigma 4-lobcd. Ovary 3-4-cclled. Fruit 3 -4-anglcd, 

 mostly l-('elittl, 1 -4-seedcd. — Herbs with alternate leaves, and white or purjilc 

 flowers in a loiig-pedunclcd raceme or spike. 



1. G. biennis, L. Soft-hairy; leaves oblong-lanceolate, acuminate, be- 

 coming smooiiiish, wavy -denticulate on the margins; petals spatuhitc, white; 

 fruit obtusely 4-angled, acuminate at both ends, sessile. — Dry soil, Georgia to 

 Tennessee, and northward. July and August. {^ — Stem 3° - 8° high. Spikes 

 compound. 



2. Gr. angustifolia, Miehx. Stem simple, or spanngly branched, closely 

 pubescent ; leaves lanceolate, acute, coarsely-toothed, often blotched with purple ; 

 the uppermost linear and nearly entire ; fruit nearly sessile, acute at both ends, 

 sharply 3 -4-angled. — Dry old fields and sandy places near the coast, Florida to 

 North Carolina, and westward. June - August. @ — Stem 2° - 3° high. 

 Flowers white. 



3. G. filipes, Spach. Pubescent and somewhat hoary, becoming smootli- 

 ish ; stem slender, paniculately branched ; leaves linear, toothed, wavy ; fruit 

 ovoid, obtuse, sharply 4-anglcd, on slender pedicels. — Dry pine barrens, Florida 

 to South Carolina, and westward. July - Sept. (f) ? — Stem 2° - 3° high, verv 

 leafy. 



2. CENOTHEEA, L. Evexing-Primkose. 



Calyx-tube produced beyond the ovary ; the limb 4-lobcd, rcflexed and decid- 

 uous. Petals 4. Stamens 8. Stigma 4-lobed. Capsule 4-valvcd, many-seeded. 

 — Herbs, with alternate leaves, and axillary or racemose chiefly yellow flow- 

 ers. Pollen-grains triangular, connected by cobwebby hairs. 



* Capsule cylindrical, sessile: flowers expanding at night : annuals or biennials. 



1 . CE. biennis, L. Hairy, hirsute, or smoothish ; stem tall, often simple ; 

 leaves lanceolate and ovate-lanceolate, acute, wavy and toothed or serrate on the 

 margins ; the earliest ones sometimes pinnatifid ; spikes leafy, at length elon- 

 gated ; calyx-tube longer than the lobes ; flowers large. (CE. murieata, Pursh. 

 CE. gvandidoni, Ait.) — Fields and waste places, everywhere. June -Sept. — 

 Stem 2° -4° high. Varies greatly in pubescence and size of the flower. 



2. CE. sinuata, L. Hairy or downy ; stems ascending or difl'use ; leaves 

 oblong, pinnately lobed, the lowest pinnatifid ; flowers small, axillary ; calyx 

 and capsule hairy. Passes through several intermediate forms into A^ar. iiumi- 

 FUSA, Terr. & Gray. Stems prostrate, hoary; leaves small, lanceolate, spar- 

 ingly toothed or entire. — Fields and waste places, common ; the variety in 

 drifiing sand along the coast. May - Sept. — Stems 2' - 2° high. 



* * Capsule ohovute or clavaie, furrowed, and more or less pedunckd : flowers ex- 

 panding in sunshine. 



3. CE. glauca, Miclix. Smootii and somewhat glaucous ; leaves sessile, 

 oblong-ovate, w^avy -denticulate, acute ; racemes few-flowered, leafy ; flowers 

 large; capsule ovoid-oblong, 4-winged, tapering into a short pedicel. (CE. 

 Fraseri, Pursh.) — ^Mountains of Georgia, North Carolina, and Tennessee. May 



