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'Clematis occidentalis' clematis References
Book (Oct 2001) Page(s) 300.
Book (1840) Page(s) 10-11. C. verticillaris (DC.): peduncles 1-flowered; leaves verticillate in fours, ternate; leaflets petiolulate, ovate, acuminate, subcordate, entire or sparingly toothed; petals acute.- DC. prodr. 1. p. 10; Hook. fl. Bor.-Am. 1. p. 2. Atragene Americana, Sims, bot. mag. t. 887; Pursh, fl. 2. p. 384. Mountains and rocky places, British America, north to lat. 549. and west to the Rocky Mountains and N. W. Coast; Vermont! to North Carolina ! April-May-Climbing. Flowers very large, campanulate. Sepals oblong-lanceolate, bright purplish-blue.
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