Data mode


Sign up

Copy permalink to share

Clematis occidentalis (Hornemann) A.P. de Candolle var. occidentalis . Subgenus: Atragene. Purple Clematis, Mountain Clematis. Phen: May-Jun. Hab: Rocky slopes over mafic rocks (greenstone, amphibolite), known positively in NC only from amphibolite peaks in Ashe County. Dist: Var. occidentalis is widespread in ne. North America, from NB west to w. ON, south to NJ, DE, OH, nw. IL, and ne. IA, and in the mountains to w. VA and w. NC.

Origin/Endemic status: Native

Taxonomy Comments: Two other varieties occur in the Rocky Mountains. Fernald's var. cacuminis, published under C. verticillaris, described plants from the mountains of VA and NC; it is apparently merely a form based on material in early flower (Pringle 1971).

Synonymy: = FNA3, K1, K3, K4, NY, Pa, Va; = Clematis occidentalis (Hornem.) DC. ssp. occidentalis – NE; < Atragene americana Sims – S, S13; < Clematis occidentalis (Hornem.) DC. – C, Il, Mi, W; < Clematis verticillaris DC. – G, RAB, Tat; > Clematis verticillaris DC. var. cacuminis Fernald – F; > Clematis verticillaris DC. var. verticillaris – F

Show in key(s)

Show parent genus

Heliophily ?: 7

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷


See something wrong or missing on about Clematis occidentalis var. occidentalis? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.

Cite as...