Plants 0.5-4 m. Leaves 2-13 × 1-8 cm. Flowers : corolla white to pale pink or purplish, 10-17 × 3-7 mm. Capsules compressed-cylindric, ca. 10 mm. Seeds compressed-globose, lustrous. 2 n = 32. Flowering summer-early fall. Moist coves, rocky woods, ledges, alluvial slopes, and thickets; 0-1500 m; B.C., Man., N.B., N.S., Ont., Que.; Conn., Del., Ill., Ind., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Tenn., Vt., Va., W.Va., Wis.
Acaulescent during the first year, with several ascending, non- prehensile, decompound lvs; climbing the second year to 3 m, with slender, elongate stems and large, delicate, prehensile lvs, their rachis elongate and the uppermost lfls greatly reduced; 2n=32. Woods, chiefly in the mts.; Que. to Wis., s. to Del., N.C., Tenn., and Ind. June-Sept.
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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From Flora of Indiana (1940) by Charles C. Deam
This plant was reported from Lake County by Ball in 1884 and from Steuben County by Bradner in 1892. I have been acquainted with it in cultivation for years and I saw a specimen in 1910 in an unpastured woods about 3 miles southeast of Michigan City, La Porte County. I was not prepared to take a specimen but I returned to the same spot a few years later and found the woods heavily pastured and the specimen gone. It was, no doubt, a rare plant in northern Indiana and may yet be rediscovered.
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