Stems climbing or trailing; lvs hastate, 4-8 cm, the terminal lobe oblong, the basal lobes acute, often 2-3-angled; fls pink, 2-3.5 cm; 2n=22. Native of Japan, the double-fld form ("California rose") occasionally cult. and escaped along roadsides etc. in much of our range. The rarely cult. single-fld form is reported as an adventive weed in Pa. (C. japonica, a preoccupied name; Convolvulus japonicus; Convolvulus pellitus; Convolvulus wallichianus)

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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