250 Order 18.— HYPERICACEiE. 



18 H. sphseroo^rpon Mx. St. obscurely i-sided ; Ivs. linear-oblong, obtuse, 

 with a minute calloa-s tip, almost veinles3 ; cyme compound, nearly leafless, pedun- 

 culate; Sep. ovate, mucronate; sty. closely united; caps, globular. — Rocky banks 

 of the Oliio and Ky. rivers. St. somewhat woody at base, 10 — 15' high. Lvs. 

 I — 2' long, } as wide, closely sessile, with large, pellucid dots. Fls. at length 

 numerous, 7" diani. Jl. 



19 H. angulosum Mx. Herb smooth ; sL acutely i-cornered ; Iva. oblong-lanceolate, 

 aoate ; cymes leafless ; sty. distinct, thrice larger than the ovary. — Swamps in pine 

 barrens, BT. J. to Fla. (Bainbridge, Ga., Misses Keen). St. nearly 2f high. Lvs. 

 distinct, opaque, scarcely punctate, 8 — 12" long, 1 — 3" wide, edges revolute. 

 Pis. often alternate on the ultimato branches. Sepals ovate, striate, acute, .0 

 times shorter than the orange-colored petala Jl. 



20 H. elliptioum Hook. Herb smooth; st. quadrangular, simple; lvs. elliptical, 

 obtuse, somewhat clasping, pellucid-punctate; cyme pedunculate; sep. unequal ; 

 sty. united to near the summit, as long as the ovary. — %■ Low grounds Can. to 

 Penn. St. 8 — 16' high, slender, colored at base. Lvs. 8 — 13" by 2 — 4", some- 

 what erect, about as long as the internodes. ' Cymes of about a dozen flowers, 

 generally 1 or 2' above the highest pair of leaves. Central fls. subspssile. Petals 

 acutish, orange-yellow, 2 — 3" long; sep. shorter. Stig. minute. Jl. 



21 H. gravSolena Buckley. St. terete, smooth, nearly Biraplo ; lvs. oblong-ovate, 

 clasping, punctalo beneath ; cymes terminal and axillary ; sep. and pet. narrow ; 

 flL oo; styles 3. — .High Mts., ^. Car. (Buckley). Plant with a strong odor. 

 Stem 2 — 3f high. Lvs. 2' long, half as wide. PLs. largo and numerous. 

 Jl. — Aug. 



22 H. pilosum Walt. Herb rough-downy; at. simple, terete, virgate; lvs. ovate- 

 lanceolate, appressed, clasping, acute; cyme few-flowered; sty. distinct, as long as 

 the ovary. — D Wet pine barrens, S. Car. to Fla. and La., common. Lvs. ,4 — 8" long, 

 \ as wide, very acute. St. 1 — 3f high, quite simple to near the top, clothed with 

 a rough coat of hairs. Fls. 5 — 6" diam,, mostly alternate on the branches of the 

 cyme. Jn. — Sept. 



23 H. miitilum L. Dwarf St. John's "Wort. St. quadrangular, branched ; 

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

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

 St. 3 — 6 — 9' high. Lvs. closely sessile, apparently connate, 4 — 8" by 2 — 5", 

 outer veins obscure. Fls. minute, orange-colored, jl., Aug. 



24 H. Canadense L. St. quadrangular, branched; lvs. linear, attenuated to (he 

 base, with pellucid and also with black dots, rather obtuse ; pet. shorter than tho 

 lanceolate, acute Sep.; sta.. 5 — 10. — CD Wet sandy soils, Can. to Ga. St. 6 — 12' 

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

 8 — 12" by \ — 1 or 2", sometimes linear-lanceolate, radical ones obovate, short. 

 Fls. small, orange-colored. Ova. longer than the styles. Gaps, red, very acute, 

 twice as long as the sepals. Jn. — Aug. 



25 H. Sarothra Mx. St. and branches filiform, quadrangular; lvs. very minute, 

 subulate; /s. sessile; sta. 5 — 10. — 1) St. 4 — 8 — 12' high, branched above into 

 numerous, very slender, upright, parallel branches apparently leafless, from the 

 minuteness of the leave. Fls. very small, yellow, succeeded by a conical brown 

 capsule which is twice tho length of tho sepals. Jl., Aug. 



26 H. Drummondii Torr. & Gr. Branches alternate, square above; lvs. linear, 

 very narrow, acute, longer than the internodes; Jh. pedicellate; sta. 10—20; 

 sep. lanceolate, shorter than the petals, but longer than the ovoid capsule. — 

 ©Near St. Louis, to Ga. and La. Plant more robust than the last, 10 — 20' high, 

 very branching. Lvs. \' long. Fls. about 4" diam. 



3. ELODEA, Adams. (Gr. iX63rig, marshy ; from the habitat of the 

 plants.) Sepals 5, equal, somewhat united at Laso ; petals 5, deciduous, 

 equilateral ; stamens 9 (rarely more), triadelphous, the parcels alter- 

 nating with 3 hypogynous glands; styles 3, distinct; capsule 3-celled. — 

 M- Herbs with pellucid-punctate lvs., tho axils leafless. Fls. dull orange- 

 purple. 



