434 HYPERICACEAE. [Vor.. II. 
14. Hypericum boreale (Britton) 
Bicknell. Northern St. John’s- 
wort. (Fig. 2457.) 
Hypericum Canadense var. boreale Britton, Bull. 
‘orr, Club, 18: 365. 1891. 
H. boreale Bicknell, Bull. Torr. Club, 22: 213. 1894. 
Annual, stem terete or slightly 4-angled, up- 
right from a usually assurgent base, simple or 
branched, 1/-18’ high. Leaves elliptic, oval, 
oblong, or linear-oblong, 3’’-16’’ long, 1//-4’’ 
wide, sessile or slightly clasping, obtuse, mostly 
3-nerved, those of the lower part of the stem 
commonly much smaller than the upper and 
closer together; cymes few-several-flowered, 
leafy-bracted; flowers about 214’ broad; sepals 
narrow, obtuse; capsules oblong, obtuse or ob- 
tusish, apiculate, 2//-234’’ long, purple, cross- 
wrinkled, longer than the sepals; seeds 3-5 
times as long as wide, pale, longitudinally fur- 
rowed and finely cross-lined. 
In wet soil, Newfoundland to New Jersey and 
a Pennsylvania. July—Sept. 
15. Hypericum miutilum L. Dwarf or Small-flowered St. John’s-wort. 
(Fig. 2458.) 
Hypericum mutilum V,. Sp, Pl. 787. 1753- 
Ascyrum Crux-Andreae \,. Sp. Pl. 787. 1753. 
Annual, slender, erect or ascending, gener- 
ally tufted, abundantly branched, 6’-214° high. 
Branchlets 4-angled; leaves oblong or ovate, 
sessile, clasping, obtuse, 4//-14’’ long, 2//-7’/ 
wide, 5-nerved at the base; cymes many-flow- 
ered, terminal, subulate-bracted; pedicels slen- 
der, 1/’-6’” long; flowers 34’/-2’’ broad, light 
orange yellow; sepals foliaceous, linear, lanceo- 
late or oblanceolate, much shorter than or 
slightly longer than the petals; stamens 5-12; 
styles 3; capsule ovoid, pointed, 1-celled, 1//- 
2// long, somewhat longer than the sepals. 
In low grounds, Nova Scotia to Manitoba, Florida 
and Texas. Ascends 3000 ft. in Virginia. July-Sept. 
16. Hypericum gymnanthum Engelm. 
& Gray. Clasping-leaved St. John’s- 
wort. (Fig. 2459.) 
Hypericum gymnanthum Engelm. & Gray, Bost. 
Journ. Nat. Hist. 5: 212. 1847. 
Hypericum mutilum var. gymnanthum A, Gray, 
Man. Ed. 5. 86. 1867. 
Annual, erect, simple or sparingly branched, 
10’—3° high. Leaves ovate, or the lower oval, 
cordate-clasping, often distant, 4’’-10’’ long, 
2/’-4/’ wide, acute, or the lower obtuse, 3-7- 
neryed at the base; cymes terminal, loose, subu- 
late-bracted; flowers numerous, 1//-2’’ broad; 
sepals lanceolate, acuminate, equalling or shorter 
than the petals and generally somewhat shorter 
than the 1-celled ovoid capsule; styles 3; stamens 
10-12; capsule about 2’” long. 
In low grounds, southwestern New Jersey and Delaware to Minnesota, south to Louisiana and 
Texas. July-Sept. 
