298 CLASS XVIII. ORDER IV. 



Leaves oblong ovate, doited with minute, pellucid points, only 

 visible with a strong magnifier. Segments of the calyx ovate; 

 petals yellow, nearly an inch long. Stamens very numerous. 

 Capsules nearly as large as nutmegs, ovate, five valved. Seeds 

 oblong, very numerous. — At Burlington, Vermont. — July. — Pe- 

 rennial. 



Hypericum perforatum. L. Common St. John's Wort. 



Flowers with three styles ; stem two edged ; leaves 



obtuse, with pellucid dots ; calyx leaves lanceolate. 



A hardy and very common weed in pastures and dry soils. 

 Stems numerous, erect, round, with a slight, prominent line on 

 each side, brachiate. Leaves opposite, oblong-oval, entire, paler 

 beneath, covered with small, transparent dots, which when held 

 against the light appear like perforations. Flowers numerous, 

 terminal, bright yellow. Petals oval; stamens numerous; 

 styles three. — July, August. — Perennial. 



Hypericum corymbosum. Willd. Spotted St. John's Wort. 



Flowers with three styles, dotted ; stem erect, 

 branching; leaves clasping, oblong oval, obtuse, dot- 

 ted with black ; corymbs terminal, brachiate, crowd- 

 ed; calyx segments lanceolate. 

 Syn. Hypericum maculatum. Mx. 



Somewhat smaller than the preceding, but with larger leaves. 

 Flowers smaller, pale yellow. — Damp woods, Chelsea beach 

 island. — July. — Perennial. 



Hypericum Canadense. Ij. Canada St. John''s Wort. 



Flowers with three styles, axillary, pedunculated, 



solitary ; leaves sessile, linear, narrowed at base ; 



stem herbaceous, square, dichotomous above. Willd. 



A small species, generally frequenting a soil which is some- 

 what moist. Stem round, with four prominent lines, formed by 

 the decurrcnt base of the leaves. Lower branches opposite, 

 upper ones in forks. Leaves linear-lanceolate, with transparent 



