polypi:talous exogenous plants. 2(i:J 



A. HUMiLis, Miclix. stems branching from the base; 

 leaves lanceolate, tapering into a petiole ; flowers solitary ; 

 sfi/Ie very short ; jjctals 4, purplish. Varies, with the leaves 

 dilated and somewhat cordate at the base, and the lower 

 floicers clustered. Ditches and muddy places. Stems 

 6-12' high. 



LYTHRUM, L. Loosestrife. 



Calyx cylindrical, striate, 4-7-toothed, usually with mi- 

 nute appendages in the sinuses; petals 4-7; stamens as 

 many as the petals, or twice as many, inserted on the lower 

 part of the calyx, nearly equal; capsule oblong, 2-celled, 

 many-seeded. — Herhs, with opposite or alternate leaves, and 

 axillary purple or vfhiti^h. floioers, 



L. ALATUM, Pursh. Smooth; stem and virgate ^mwcAes 

 4-angled; leaves lanceolate, acute at both ends, opposite, 

 the uppermost alternate, and shorter than the floicers; 

 2)etals and stamens 6. Varies, -with branches shorter, leaves 

 larger, 2' long, broadly lanceolate, sometimes whorled, the 

 uppermost twice as long as the calyx. Stem 2°-4° high ; 

 flowers violet-purple. 



L. LINE ARE, L. Smooth ; stem 4-angled, much-branched ; 

 leaves all opposite, linear; floivers small, w^hitish; petals 

 and stamens 6. Brackish marshes. Stem 2''-4° high; 

 calyX'iQQi]i short. 



CUPHEA, Jacq. 



Calyx tubular, 12-ribbed, gibbous or spurred at the base 

 on the upper side, 6-toothed, and usually with as many 

 little appendages in the sinuses ; petals 6, unequal ; stamens 

 11-12 ; ovary with a gland at the base next the spur of the 

 calyx; style filiform; stigma 2-lobed; capsule 1-2-celled; 

 few-seeded. — Chiefly lierhs, with branching stems, and 

 purplish. 



