[Rubus carpinifolius Rydb., moreRubus continentalis (Focke) L.H. Bailey, Rubus mississippianus L. H. Bailey, Rubus okeechobeus L. H. Bailey, Rubus rubrisetus Rydb., Rubus tallahasseanus L. H. Bailey, Rubus trivialis var. serosus L.H. Bailey]
Primocanes trailing, rooting at least at the tip, armed with a few short, stout, ±recurved prickles with expanded base, also hispid with many reddish glandular bristles; primocane lvs ±evergreen, 5-foliolate, on long, prickly petioles; lateral lfls sessile or subsessile; terminal lfl on a prickly and hispid petiolule a fourth to a third as long as the blade, mostly elliptic or oblong, a third to half as wide as long, serrate; flowering branches (excluding the peduncle) rarely over 1 dm, often only 1-3 cm, with a few small 3-foliolate lvs and commonly 1 (rarely 2) peduncles much surpassing the lvs. Chiefly in dry or sandy soil; Md. (?) and se. Va. to Fla. and Tex., n. in the interior to Mo. Apr., May.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.