314 OEDEK L. ONAGRACEiE. 



6. (E. unea'eis, (Mich.) Steyn pubescent, slender, generally branch- 

 ed. Leaves linear, entire, obtuse, crowded near the summit. Flowers 

 in terminal corymbs. Petals longer than the stamens. Capsules cla- 

 vate, tapering at the base into a pedicel. — Bright yellow. @ or If. 

 April — May. Common in dry soils. 1 — 2 feet. 



7. (E. GLAu'cA, (Mich.) Stem glabrous, somewhat glaucous, erect, 

 branching above. Leaves sessile, ovate or oblong-ovate, denticulate. 

 Flowers very showy, in short, leafy corymbs. Petals emaiginate, 

 broadly obovate, erosely crenulate at the summit, much longer than the 

 segments of the calyx. Capsules winged, pedicellate, ovoid. — Briglit 

 yellow. If. May — July. Carolina. 2 — 3 feet. 



8. CE. ripa'ria, (Nutt.) Ste7n slightly pubescent, slender. Leaves 

 linear-lanceolate, elongated, attenuate, entire, remotely denticulate. 

 Flowers in leafy, elongated racemes ; tube of the calyx longer than the 

 ovary ; segments of the calyx acuminate. Petals obcordate. Capsules 

 oblong, clavate, 4-winged, with 4 intermediate ribs. — Yellow. $ . June 

 — July. In damp soils. 2 — 3 feet 



Genus III.— GAU RA. L. 8—1. 



(From the Greek gauros, superb, alluding to the elegance of tbe flowers of some of 

 tLe s^jecies.) 



Calyx 4-cleft, tubular, prolonged beyond tlie ovary, decidu- 

 ous ; segments reflexed. Pelals 4, unguiculate. Stamens 8, 

 somewhat declined. Anthers attached near the middle. Ovary 

 4-celied, with 1 — 2 suspended ovules in each cell. Style fili- 

 form, declined. Fruit somewhat ligneous, indehiscent ; by 

 abortion 1 -celled, 1 — 4-seeded, 4-angled. Flowers in terminal 

 spikes or racemes. Perennial plants, with alternate leaves. 



1. G. angustifo'lia, (Mich.) Steyn terete, pubescent. Leaves clus- 

 tered, sessile, linear, repand, undulate, denticulate, somewhat hairy. 

 Flowers in terminal panicles, formed of slender racemes. Calyx with 

 reflexed segments; segments long, linear. Petals inserted near the 

 sunnnit of the calyx, spatulate, obtuse, shorter than the segments of the 

 calyx. Fruit ovate, with acute or winged anglts. — White. If. July 

 — Aug. Common. 2 — 3 feet. 



2. G. bien'nis, (L.) Stem villous-pubescent, branching. Leaves lan- 

 ceolate, acute, denticulate, or entire, pubescent, sometimes glabrous 

 above when old. Flowers crowded in the terminal spikes; segments ol 

 the calyx rather longer than the petals. Petals spatulate, larger than 

 the preceding. Fruit oval-oblong, acute at each end, with 4 conspicu- 

 ous ribs. — White or red. 6. Jidy — Aug. Upper districts. 3 — 5 

 feet. 



8. G. Filip'es, (Spach.) Stem suffructicose at the base, branching 

 above. Leaves linear or oblong-linear, acute at the base, often in the 

 axils, remotely sinuately toothed, often almost pinnatitid, mucronate 

 Flmvers in pnnicles, on very slender branches. Calyx hairy, with seg- 

 ments exceeding in length the p^^tals. Petals spatulnte, oblong-ovate 

 Fruit clavate, on a fihform pedicel, 4 angled. — White or reddish. U 

 Jidy— Aug. In dry soils. 2 — 4 feet. 



