184 XX. HYPERICACEiE. Elodea. 



to Ark. About 2f high. Leaves 1 — 2' by 2 — i", often somewhat lance-shaped. 

 Flowers about 6" diam., with very numerous stamens, Aug. Sept. 



9. H. AUREUM. Bertram, (H, amoenum. Ph.) Golden Hypericum. 

 Branches spreading, ancipital ; lis. oblong, obtuse, attenuate at base, 



glaucous beneath ; Jis. few together, subsessile ; pet. coriaceous, reflexed ; sty. 3, 

 connate, persistent on the ovoid- conic capsule. — A beautiful shrub, 2 — 4f high, 

 native of S, Car. and Ga, Flowers large, orange-yellow. Stamens 100 or 

 more. Capsule red. Jn. — Aug. 



10. H. NUDiFLORUM. Michx. 



St. shrubby at base; broMches winged; Ivs. ovate-oblong, sessile, obtuse; 

 cymes leafless, pedunculate; central jis. shortly pedicellate; pet. obovate, longer 

 than the linear sepals ; sty. united. — Wet grounds, Penn. to La, Plant 1 — 2f 

 high, with numerous 4-sided branches. Leaves thin, about 2' long, with minute 

 reddish dots. Flowers small and rather loose in the cyme. Aug, f 

 * * * Stamens 5 — 20, distinct. 



11. H, MUTiLUM. (H. quinquenervium. Walt.) Small St. John's-wort. 

 St. erect, usually much branched, often subsimple, quadrangular ; Ivs. 



obtuse, ovate-oblong, clasping, 5- veined, minutely punctate ; cymes leafy ; pet. 

 shorter than the sepals ; sta 6 — 12. — Damp, sandy soils. Can, to Ga. W, to 

 la ! Stem 3 — 6 — 9' high. Leaves closely sessile, apparently connate, 4 — 8" by 

 2 — 5", outer veins obscure. Flowers minute. Jl. Aug. 



12. H. Canadense. Canadian St. Johnh-wort. 



St. quadrangular, branched ; lis. linear, attenuated to the base, with pel- 

 lucid and also with black dots, rather obtuse ; sep. lanceolate, acute, longer 

 than the petals; sta. 5 — 10. — (J) "Wet, sandy soils. Can. to Ga, Stem 8 — 15' 

 high, slightly 4- winged. Lower branches opposite, upper pair forked. Leaves 

 about 1' by 1 — 2", sometimes linear-lanceolate, radical ones obovate, short. 

 Flowers small, orange-colored. Ovary longer than the styles. Capsule red, 

 longer than the sepals. Jl. Aug. 



13. H. SAROTHRA, Michx, (Sarothra gentianoides. Linn.) 



St. and branches filiform, quadrangular ; lis. very minute, subulate ; Jis. 

 sessile. — Dry fields and roadsides, U. S. and Can, Stem 4 — 8' high, branched 

 above into numerous, very slender, upright, parallel branches, apparently leaf- 

 less, from the minuteness ol the leaves. Flowers very small, j^ellow, succeeded 

 by a conical, brown capsule which is twice the length of the sep, Jl. Aug. 



14. H. Drummondii, Torr, & Gray, (Sarothra. Grev. cf- Hook.) 

 Branches alternate, square above ; lis. linear, very narrow, acute, longer 



than the internodes; /s. pedicellate; sta. 10 — 20; sep. lanceolate, shorter than 

 the petals, but longer than the ovate capsule. — Near St. Louis, &c. Plant 

 more robust than the last, nearly If high, very branching. Leaves i' long. 

 Flowers about 4" diam. 



3. ELODEA. Adans, 

 G^'. tXwJ/jf, marshy; from the habitat of the plants. 



Sepals 5, equal, somewhat united at base ; petals 5, deciduous, 

 equilateral ; stamens triadelphous, the parcels alternating with 3 hy- 

 pogynous glands ; styles 3, distinct ; capsule 3-celled. — % Herbs with 

 peUucid-pundate leaves, the axils leafless. 



1. E. ViRGiNiCA. Nutt, (E, campanulata. Ph. Hypericum, Linn.) 

 St. erect, somewhat compressed, branching ; lis. oblong, amplexicaul ; 



sta. united below the middle, with 3 in each set. — Swamps and ditches, U, S, 

 and Can, Whole plant usually of a purplish hue, 9—20' high. Leaves lA— 2^' 

 long, ^ as wide, upper ones lanceolate, lower oblong-ovate, all very obtuse, 

 glaucous beneath. Cymes terminal and axillar}^ Flowers 5" diam., orange- 

 yellow. Petals about twice longer than the calyx. Glands ovoid, orange- 

 colored. Capsules ovoid-oblong, acutish, Jl. Sept, 



2. E, PETioLATA. Pursh, (Hypericum, Walt.) 



Lvs. oblong, narrowed at base into a petiole ; fls. mostly in 3s, axillary, 



