316 FLORA. OF TEXAS. 



obscurely-veined leaves, and largeY flowers and fruit. Grassy 

 swamps. Stem G'-18' high; leaves 6"-10" long; plaiit 

 pale green ; annual. 



POLYPREMUM, L. 



Calyx deeply 4-parted, persistent ; corolla wheel-shaped, 

 bearded in the throat, 4-lobed, imbricated in the bud ; 

 stamens 4; style single, very short; stigma ovoid, entire; 

 capsule ovoid, compressed, 2-celled, loculicidally 2-valved, 

 many- seeded. — A low smooth perennial herb, with 4-angled 

 forking stems, linear acute leaves, their bases united by the 

 membranaceous stipules, and solitary sessile white floivers 

 in the forks of the stem. 



P. PROCUMBENS, L. Waste places. Stems 6-10', erect 

 or prostrate, clustered ; floivers very small, the corolla barely 

 longer than the calyx-lohes. 



GELSEMIUM, Juss. Yellow Jessamine. 



Flo2vers dimor'ph.ous; calyx 5-parted, persistent ; corolla 

 funnel-shaped, 5-lobed; the lobes rounded, emarginate, 

 spreading, quincuncial in the bud, the sinuses impressed; 

 stamens 5, inserted near the base of the corolla ; anthers 

 oblong-sagittate, extrorse; styles united, filiform, partly 

 persistent ; stigmas 4, linear, spreading ; capsnle oblong, 

 compressed, 2-cellecl, opening septicidally to the middle, 

 and loculicidally at the apex, each valve tipped with the 

 persistent base of the styles ; seeds several, oval, flat, winged, 

 obliquely imbricated in two rows. — A smooth, woody vitie, 

 with opposite evergreen leaves, minute stipules, and large 

 yellow fragrant floivers, in axillary bracted and cluster-like 

 racemes. 



G. SEMPERVIRENS, Ait. On margins of swamps and 

 river-banks. Stem twining, purplish; leaves lanceolate or 

 ovate, acute or subcordate at the base, short-petioled; 

 racemes few-flowered; pedicels scaly; corolla I'-IJ' long. 



