184 



XX. HYPERICACEiE. Elodea. 



to Ark. About 2f high. Leaves 1—2' by 2—4", often somewhat lance-shaped. 

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



9 H. AUREUM. Bertram. (H. amcenum. Ph.) Golden Hyperimm. 



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

 <rlaucous beneath ; fis. 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; branches winged; Ivs. ovate-oblong, sessile, obtuse; 

 cymes leafless, pedunculate; central fis. 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. t 

 ♦ * * Stamens 5 — 20, distinct. 



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

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



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. John's-wort. 



St. quadrangular, branched; Ivs. 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.—® Wet, sandy soils. Can. to Ga. Stem 8—15' 

 hio-h, 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. Lhm.) 



St. and branches filiform, quadrangular; hs. very minute, subulate; fis. 

 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, yellow, succeeded 

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



14. H. Drcmmondii. Torr. & Gray. (Sarothra. Grev. d^ Hook.) 

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



than the intern odes; /5. pedicellate; sta. 10—20; sep. lanceolate, siiorter 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. 

 Gr. £\ui6rig, 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 

 jjeUucid-punctate leaves.^ the axils leafless. 



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

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



stn. 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 U— 2^' 

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

 glaucous beneath. Cymes terminal and axillary. 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. (H3'pericum. Walt.) 



Lxs. oblong, narrowed at base into a petiole ; fis. mostly in 3s, axillary. 



