250 ORDER 18. HYPERICACE^E. 



18 H. spheerocarpon MX. St. obscurely 4-sided; Ivs. linear-oblong, obtuse, 

 with a minute callous tip, almost veinless ; cyme compound, nearly leafless, pedun- 

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

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

 1 2,' long, J as wide, closely sessile, with large, pellucid dots. Fls. at length 

 numerous, 7" diarn. JL 



19 H. angulosum MX. Herb smooth; st. acutely ^-cornered; Ivs. oblong-lanceolate, 

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

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

 distinct, opaque, scarcely punctate, 8 12" long, 1 3" wide, edges re volute. 

 Fls. often alternate on the ultimate branches. Sepals ovate, striate, acute, 5 

 times shorter than the orange-colored petals. Jl. 



20 H. ellipticum Hook. Herb smooth; st. quadrangular, simple] Ivs. 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. 816' 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. subsessile. Petals 

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



21 H. gravdolens Buckley. St. terete, smooth, nearly simple; Ivs. oblong-ovate, 

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

 fiLoo; styles 3. High Mts., N. Car. (Buckley). Plant with a strong odor. 

 Stem 2 3f high. Lvs. 2' long, half as wide. Fls. large and numerous 

 Jl. Aug. 



22 H. pilosum "Walt. Serb rough-downy ; st. simple, terete, virgate ; Ivs. ovate- 

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

 the ovary. CD Wet pine barrens, S. Car. to Fla. and La., common. Lvs. 4 8" loner, 

 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. mtitilum L. DWARF ST. JOHN'S WORT. St. quadrangular, branched ; 

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

 shorter than the sep. ; sla. 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; Ivs. linear, attenuated to the 

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

 lanceolate, acute sep. ; sta. 5 10. 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. Caps, red, very acute, 

 twice as long as the sepals. Jn. Aug. 



25 H. Sarothra MX. St. and branches filiform, quadrangular; Ivs. very minute, 

 subulate; fls. sessile; sta. 610. St. 4812' high, branched above into 

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

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

 capsule which is twice the length of the sepals. JL, Aug. 



26 H. Drummondii Torn & Gr. Branches alternate, square above; Ivs. linear, 

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

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

 (T) 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. ELQDEA, Adams. (Gr. e/Lw^, marshy ; from the habitat of the 

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

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

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

 if Herbs with pellucid-punctate Ivs., the axils leafless. Fls. dull orange- 

 purple. 



