Hypericum dolabriforme Vent.
Family: Hypericaceae
Hypericum dolabriforme image
Spreading or ascending perennial 2-5 dm, somewhat woody below, often rhizomatous but the stems clustered; lvs linear to linear-oblong, 2-4 cm, without evident lateral veins; cymes compact and few-fld; sep very unequal, the outer pair ovate or broadly lanceolate, 7-12 mm, the others smaller; pet 9-13 mm; stamens 120-200; stigmas 3(4), minute; fr ovoid, 5-8 mm; seeds 1.5-1.8 mm. Limestone outcrops, cedar-glades, etc.; Ky. and s. Ind. to Ga. June-Aug.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
From Flora of Indiana (1940) by Charles C. Deam
I have a specimen collected on July 13, 1899, by W. S. Blatchley in the vicinity of Wyandotte Cave.
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This project made possible by National Science Foundation Award 1410069