Smilax rotundifolia L.
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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
Smilacaceae
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Scientific Name
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Description
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Species Description - Slender woody vine; stems usually quadrangular, diffusely branched and often climbing high, with scattered stout, flattened prickles below; lvs deciduous, thin, green, shining, ovate to rotund or triangular-ovate, 5–10 × 4–9 cm, or smaller in dry soils, acute to cuspidate or obtuse, entire or rarely sparsely roughened on the margins, at base broadly rounded to truncate or cordate, 5- or 7-nerved, reticulate beneath at maturity; peduncles flattened, about as long as the subtending petioles; staminate tep recurved only above the middle; fr black, usually glaucous, mostly 2–3-seeded; 2n=32. Open woods, thickets, and roadsides; N.S. to n. Fla., w. to Mich., se. Mo., e. Okla., and e. Tex., the commonest greenbrier in the ne. part of our range. May, June.