140 ONAGRA.C&S. (l.VI NINf.-l'RIMKOSE FAMILY.) 



2. E. coloratura, Muhl. Stem smoothish, much branched ; leaves mostly 

 opposite, lanceolate or ovate-lanceolate, denticulate ; raceme leafy ; flowers small, 

 reddish; petals 2-cleft; Btigma clavate; capsule downy. (E. tetragonum, Pk t 



Ell.) — Swamps in the upper district-, Mississippi to North Carolina, and north- 

 ward. August — Stem l°-2° high. 



3. E. palustre, L., var. lineare, Gray. Stem pubeseent, branching 

 above; leaves linear, Blightly denticulate, the lower ones opposite; raceme 



leafy ; flowers small, white or rose-color ; Stigma clavate ; capsule hoary. — 

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



4. JUSSIiEA, L. 



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

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

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



herbs, with alternate leaves, and axillary yellow flowers. 



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

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

 jK-tals ; capsule linear, cylindrical, much longer than the pedicel. — Marshes, 

 Florida, and westward. June-Sept, fj) — 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, 

 arid westward. May- August. I]. — Stem 2°-3°long. Flowers 2' in diam- 

 eter. Capsule cylindrical. 



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

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

 long as the petal-; stamens 8; capsule 4-angled, oblong-clavate. (Ludwigia 

 decurrens, EH ) — Ditches, &C, Florida to North Carolina, and westward. July - 

 Sept. (1, — Stem G'- 3° high. 



5. LUDWIGIA, L. Seed-box. 



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

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

 short Btigma capitate. Capsule variously dehiscent 4-oelled, many-seeded — 

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



flowers. 



nde cubical, inaV&fscsaf, discharging the seeds through a central pore of the 

 t: petals large: aVuwns and >?>/'< slender: leaves 

 altemaU : flowert pedicelled. 



I. L. altcrnifolia, L. Bmoothbh; stem much branched ; leaves lanceo- 

 late, fthoit-petioled, scute; calyx ding, about as loner as the petals; 

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



