58 HYPERICACEiE. 



leaves crowded, narrow-oblanceolate, obtuse ; cymes fastigiate, 3 — 7-flow- 

 ered ; sepals ovate-lanceolate, about half as long as the petals. 



Banks of streams and in swamps. Can. and around the great lakes. Falls 

 of iNiagara. N. J. July, Aug. A shrub about 2 feet high. Floivers smaller than 

 in the preceding. The var. elon^alum of Macnab occurs in a swamp about 

 8 miles !S. of New Brunswick, N. J. The branches are more elongated, the 

 leaves more obtuse, and the flowers smaller than in the specimens from iViagara 

 Falls. Kalm's ^t. John's Wort. 



** 



Slamens numerous. Styles mostly 3, Flowers yellow. 



3. //, angulosum Mich. : stem herbaceous, square, erect ; leaves distant, 

 elongated, "ovate, subclasping, sinuate on the margin, acute, not punctate; 

 flowers axillary, solitary, in a dichotomous panicle ; sepals lanceolate, acute, 

 somewhat keeled. //. de/Uiculatum Walt. 



Cedar swamps. N. J. to Flor. June, July. %. — Stem 12 — 18 inches high, 

 branched towards the summit. Flowers scattered in the panicle and alternate, 

 orange-colored. Styles 3, often united. Angular St. John's Wort. 



4. H. adpresmr,i Bart. : stem 2-winged above ; leaves linear-lanceolate 

 or linear-oblong, closely sessile, pellucid-punctate ; cyme few-flowered, 

 naked ; sepals very unequal, oblong and obovate, at length reflexed ; petals 

 oblong;obovate, twice as long as the sepals. 



Swamps. N. J. Penn. W. to Ark. Aug., Sept. %. — Stem 2 feet high, 

 somewhat shrubby at base. Flowers in compound cymes. Stamens very nu- 

 merous. Winged St. John's Wort. 



5. H. elUpticiivi Hook. : stem square, simple below, somewhat branched 

 above; leaves elliptic, very obtuse, closely sessile, pellucid-punctate; cyme 

 nearly naked ; sepals oblong, very unequal, spreading ; capsule ovate-glo- 

 bose. 



Moist grounds. Can. to Penn. July. %. — Stem 10 — ^20 inches high. Flowers 

 pale orange. Styles 3, connate nearly to the summit. 



Elliptic St. John's Wort. 



G. ff. corymhosum Muhl. : stem terete, black punctate ; leaves ovate lance- 

 olate, obtuse, sub-clasping; flowers in dense corymbs; sepals ovate, acute; 

 petals oblong. H. pxmctatum Torr. Comp. 



Shady woods. Can. to Penn. W. to Miss. June. %. — Stem 2 feet liigh. 

 Flowers in a compact panicle or corymb. Styles 3, longer than the stamens. 

 Whole plant, except the filaments and styles, spotted with black dote. 



Corymbed St. John's Wort. 



7. H. perforatum Linn. : stem ancipital; leaves obtuse, ovate-elliptic, and 

 with the lanceolate sepals pellucid-punctate ; flowers panicled ; anthers with 

 black punctures ; styles diverging. 



Fields, pastures, &c. Throughout Can. and the U. S. Jime — Aug. %. — 

 Stem 1 — 2 feet high, branched. Flowers numerous. Stamens mostly in three 

 sets. A pernicious weed, producing,, accordmg to Dr. Darlington, troublesome 

 sores upon horses and horned cattle, where it comes in contact with them. Tt 

 would seem that the dew which collects on the plant, becomes active in this 

 way. Fl- Cest. Introduced from Europe. Common St. John's Wort. 



8. H: mutilum Linn. : stem erect, much branched, smooth, square ; leaves 

 ovate, subcordate, obtuse, sessile, obscurely 5-ner\'ed, pellucid-punctate ; 

 flowers in a dichotomous corymb ; sepals lanceolate, longer than the petals. 

 H. quinquenervinm Walt. Mich. H. parviflorum Willd. 



