Hypericum majus (A.Gray) Britton
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Clusiaceae
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Scientific Name
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Description
Species Description - Much like no. 25 [Hypericum canadense L.], but more distinctly perennial from a rhizome, and avg taller and with more compact infl; lvs commonly ascending, mostly lanceolate to narrowly oblong or narrowly elliptic, 2–4 cm × 3–9 mm, 5–7-nerved, broadly obtuse or rounded at the weakly clasping base, the basal margins of a pair of lvs meeting around the stem; sep lanceolate, acute, 4.5–6.5 mm; pet 3.5–4 mm; stamens 14–21; styles 3(4), to 1 mm; fr maroon, ellipsoid-conic, 5–7 mm; seeds 0.5–0.7 mm; 2n=16. Wet meadows and shores; Nf. and Que. to B.C., s. to N.J., O., Ill., Kans., and Colo. July–Sept. Depauperate plants may approach no. 25.