16. Hypericum Boreale (Britton) Bicknell. Northern St. John's-Wort

Fig. 2896

Hypericum canadense var. boreale Britton, Bull. Torr.

Club 18: 365. 1891. H. boreale Bicknell, Bull. Torr. Club 22: 213. 1894.

Perennial, sometimes stoloniferous; stem-terete or slightly 4-angled, upright from a usually assur-gent 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 2 1/2" broad; sepals narrow, obtuse; capsules oblong, obtuse or obtusish, apic-ulate, 2"-2 1/2" long, purple, cross-wrinkled, longer than the sepals; seeds 3-5 times as long as wide, pale, longitudinally furrowed and finely cross-lined.

In wet soil, Newfoundland to Ontario, Vermont, New Jersey, Pennsylvania and Indiana. July-Sept.

17. Hypericum Mùtilum L. Dwarf, Small-Flowered Or Slender St. John's- Wort

Fig. 2897

Hypericum mutilum L. Sp. Pl. 787. 1753. Ascyrum Crux-Andreae L. Sp. Pl. 787. 1753.

Usually annual, slender, erect or ascending. generally tufted, abundantly branched, 6'-2 1/2° high. Branchlets 4-angled; leaves oblong or ovate, sessile, clasping, obtuse, 4"-14" long, 2"-7" wide, 5-nerved at the base; cymes many-flowered, terminal, subulate-bracted; pedicels slender, 1"-6" long; flowers V-2" broad, light orange yellow; sepals foliaceous, linear, lanceolate 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, Kansas, Florida and Texas. Ascends 3000 ft. in Virginia. July-Sept.

18. Hypericum Gymnánthum Engelm. & Gray. Clasping-Leaved St. John's Wort

Fig. 2898

Hypericum gymnanthum Engelm. & Gray, Bost. Journ. Nat. Hist. 5: 212. 1847.

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-nerved at the base; cymes terminal, loose, subulate-bracted; flowers numerous, 1"-2" broad; sepals lanceolate, acuminate, equalling or shorter than the petals and generally somewhat shorter than the I-celled ovoid capsule; styles 3; stamens 10-12; capsule about 2" long.

In low grounds, southwestern New Jersey and Delaware to Ohio, Minnesota, Arkansas, Louisiana and Texas. July-Sept.