184 XX. HYPERICACEJE. ELODEA. 



to Aik. 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. AU'REUM. Bertram. (H. amonmm. P/t.) Golden Hypericum. 

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



glaucous beneath ; Jls. .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. 



SI. shrubby at base ; branchts winged ; Ivs. ovate-oblong, sessile, obtuse ; 

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

 han 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. Wall.') 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. John's-wort. 



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

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

 than the petals ; sta. 510. Wet, sandy soils, Can. to Ga. Stem 815' 

 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 brandies filiform, quadrangular ; Ivs. very minute, subulate ; Jls. 

 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 of the leaves. Flowers very small, yellow, succeeded 

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



14. H. DRUMMONDII. Torr. & Gray. (Sarothra. Grev. fy Hook.} 

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



than the intern odes; Jls. 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 \' long. 

 Flowers about 4" diam. 



3. ELODEA. Adans. 



.^-.,; Gr. cXcoJ^j, marshy; from the habitat of the plants. 



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

 equilateral ; stamens triad elprious, the parcels alternating with 3 hy- 

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

 pellucid-punctate leaves, the axils leafless. 



1. E. VIRGINICA. Nutt. (E. campanulata. PA. Hypericum. Linn.) 

 St. erect, somewhat compressed, branching ; Ivs. 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 1| 2j- 

 long, | 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- 

 colo r ed. Capsules ovoid-oblong, acutish. Jl. Sept. 



2. E. PETIOLATA. Pursh. (Hypericum. Walt.) 



Lrs. oblong, narrowed at base into a petiole; Jls. mostly in 3s, axillary, 



