Primocanes erect, ascending, or arched, rising to about 1 m or less, not rooting, beset with stiff bristles or slender, often soft prickles, the latter straight or nearly so, spreading or somewhat reflexed, mostly slender to the base, often glandular when young; primocane lvs 3- or 5-foliolate; petiole commonly as bristly as the stem; lfls usually glabrous or nearly so, but sometimes evidently hairy beneath, even velvety; infl few- to many-fld, racemiform or corymbiform, or sometimes reduced and leafy; pedicels usually glandular; fr of mediocre quality. Typically in moist or wet, low ground, but also in old fields and other disturbed habitats; Que. to Wis., s. to Va. and Ill. June-Aug. (R. angustifoliatus; R. ascendens; R. beatus; R. benneri; R. clausenii; R. discretus; R. dissensus; R. elegantulus; R. groutianus; R. hispidoides; R. jejunus; R. lawrencei; R. mediocris; R. nocivus; R. racemiger; R. regionalis; R. rotundior; R. schneideri; R. semisetosus; R. uniformis; R. univocus; R. vermontanus; R. wheeleri)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
