POLYPETALOUS EXOGENOUS PLANTS. 269 



E. ANGUSTiFOLiUM, L. Stem tall, simple, smoothish ; 

 leaves alternate, lanceolate, entire or wavy on the margins, 

 paler beneath ; racemes elongated, bracted ; fioioers showy ; 

 2)etals obovate, purple ; stigma 4:-lobed ; capsule and calyx 

 hoary-tomentose. 



JUSSI^A, L. 



CalyX'twhQ long, 4-angled or cylindrical, not prolonged 

 beyond the ovary; the limb 4-6-lobed, persistent ; j!?e^rt/5 

 4-G; stamens 8-12; capsule mostly elongated, 4-6-celled, 

 many-seeded, opening irregularly at the sides. Marsh 

 herbs, with alternate leaves, and axillary ^qWovi floivers, 



J. LEPTOCARPA, Nutt. Hairy ; stem erect, at length much 

 branched; leaves lanceolate, 2iC\\.iQ\ Jioiuers small; calyx- 

 lobes mostly 6, as long as the petals; capsule linear, cylin- 

 drical, much longer than the pedicel. Marshes. Stem 

 2°-5° high ; capsule IJ' long, slightly curved ; annual. 



J. DECURREXS, DC. Smooth ; stem erect, branched, wing- 

 angled; leaves lanceolate, acute, sessile; floivers nearly 

 sessile ; calyx-lohes 4, nearly as long as the petals ; stamens 

 8 ; capsule 4-angled, oblong-clavate. (Ludwigia decurrens, 

 Ell.) Stem 6-3° high ; annuals. 



J. occiDENTALis, Nutt. Pubescent ; stem erect, angled ; 

 leaves lanceolate, acute at each end, sessile or with short 

 petioles ; floivers (rather large) on very sharp mostly brac- 

 teolate pedicels ; lobes of the calyx 4, ovate, acute, shorter 

 than the obovate emarginate petals ; staynens 8 ; capsules 

 elongated, 4-sided, thrice the length of the pedicels. — 

 Drummond, 



LUDWIGIA, L. Seed-box. 



CalyX'inhQ 4-angled or cylindrical, mostly short, not 

 prolonged beyond the ovary ; 2ictals 4, roundish or obcor- 



