314 ORDER L. — ONAGRACEJ3. 



6. GE. linea'ris, (Mich.) Stem pubescent, slender, generally branch- 

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

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

 vate, tapering at the base into a pedicel. — Bright yellow. # or 2£. 

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



7. GE. 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 emarginate, 

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

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

 yellow, y. May — July. Carolina. 2 — 3 feet. 



8. <E. ripa'ria, (Nutt.) Stem slightly pubescent, slender. Leaves 

 lineai 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 the flowers of some of 

 the species.) 



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

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

 somewhat declined. Anthers attached near the middle. Ovary 

 4-celled, 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.) Stem 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 

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

 calyx. Fruit ovate, with acute or winged angles. — 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 oi 

 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 . July — Aug. Upper districts. 3 — 5 

 feet. 



3. 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 pinnatifid, mucronate 

 Flowers in panicles, on very slender branches. Calyx hairy, with seg- 

 ments exceeding in length the petals. Petals spatulate, oblong-ovate 

 Fruit clavate, on a filiform pedicel, 4-angled. — White or reddish, 11 

 July— Aug. In dry soils. 2 — 4 feet 



