140 0NA(;KACK/K. (KVI.MVC-rUIMROSK lAMII.Y.) 



2. E. COloratum, Mulil. Stem sniooilii>h, imicli l)raii(lir(l ; loiivos mostly 

 oi)posite, IiiiuTolato or ovate-laiucolati!, ilititiculati' ; raceine IcatV ; Howi-rs small, 

 ri'tldish; petals 2-cK'ft ; stigma clavatc; ta|)snle <lo\vny. (E. tctiaf:()iium, Ph , 

 I''ll-) — Swamps ill the upper distrifts, Mississii>pi to North Carolina, and north- 

 ward. August. — Stem l°-2° liigli. 



3. E. palustre, L., var. lineare, Gray. Stem puheseent, hrancliing 

 nbove ; leaves linear, slightly dentieulate, the lower ones opposite ; raeemc 

 leafy ; flowers small, white or rose-eolor ; stigma clavate ; <a[)sule hoary. — 

 Mountains of North Carolina, and northward. August. — Stem l°-'2° high. 



4. JUSSI^A, L. 



Calyx-tube long, 4-anglcd or cylindrical, not prolonged beyond the ovary ; the 

 limb 4-6-lobcd, persistent. Petals 4-6. Stamens 8-12. Capsule mostly 

 elongated, 4 - 6-cclled, many-seeded, opening irregularly at the sides. — Marsh 

 herbs, with alternate leaves, and axillary yellow flowers. 



1. J. leptoearpa, Nutt. Hairy; stem erect, at length much branched; 

 leaves lanceolate, acute ; flowers small ; calyx-lobes mostly 6, as long as the 

 petals; capsule linear, cylindrical, much longer than the pedicel. — Marshes, 

 Florida, and westward. June - Sept. (i) — Stem 2° - 5° high. Capsule 1 ^' 

 long, slightly curved. 



2. J, grandiflora, Michx. Hairy ; stem creeping at the base ; leaves 

 lanceolate, acute ; flowers large ; calyx-lobes .5, half as long as the petals ; ovary 

 (rarely maturing) rather shorter than the pedicel. — ]Marshes, South Carolina, 

 and westward. May -August. 1|. — Stem 2° -3° long. Flowers 2' in diam- 

 eter. Capsule cylindrical. 



3. J. deciirrens, DC. Smooth; stem erect, branched, wing-angled; 

 leaves lanceolate, acute, sessile ; flowers nearly sessile ; calyx-lobes 4, nearly as 

 long as the petals; stamens 8; capsule 4-ongled, oblong-clavate. (Ludwigia 

 decuiTcns, E/l) — Ditches, &c., Florida to North Carolina, and westward. July - 

 Sept. ® — Stem 6' - 3° high. 



5. LUDWIGIA, L. Seed-box. 



Calyx-tube 4-angled or cylindrical, mostly short, not jjrolonged beyond the 

 ovary. Petals 4, roundish or obcordate, often wanting. Stamens 4. Style 

 short. Stigma capitate. Capsule variously dehiscent, 4-celled, many-seeded. — 

 Perennial and mostly stoloniferous marsh herbs, with entire leaves, and yellow 

 flowers. 



* Capsule cubical, indnhiscent, dischargimj the seeds through a central pore of the 

 convex disk : cali/x-lobes deciduous: petals targe : stamens and style slender : leaves 

 alternate : flowers pcdicelled. 



1. L. alternifolia, L. Smoothish; stem much branched ; leaves lanceo- 

 late, short-pctioled, acute; calyx-lobes spreading, aliout as lone as the petals; 

 capsule large, wing-angled. (L. macrocarpa, Michx.) — Shady swamps, Florida 



