Flora of North America species comparison

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Clematis hirsutissima

Clematis tangutica

Douglas' clematis, hairy clematis, leatherflower, sugar bowls, vaseflower

golden clematis, golden tiara clematis, golden virgin's-bower
Stems

erect, not viny, 1.5-6.5 dm, hirsute (sometimes sparsely so in var. hirsutissima) or densely short, soft-pubescent to nearly glabrous.

Leaf

blade 2-3-pinnate;

leaflets often deeply 2-several-lobed, if lobed than lateral lobes usually small and distinctly narrower than central portion, leaflets or lobes linear to lanceolate, 1-6 × 0.05-1.5 cm, thin, not prominently reticulate;

surfaces sparsely to densely silky-hirsute, not glaucous.

Inflorescences

terminal, flowers solitary.

Flowers

broadly cylindric to urn-shaped;

sepals very dark violet-blue or rarely pink or white, oblong-lanceolate, 2.5-4.5 cm, margins narrowly expanded distally, 0.5-2 mm wide, thin, distally ± crisped, tomentose, tips obtuse to acute, slightly spreading, abaxially usually densely hirsute, occasionally moderately so.

Achenes

bodies densely long-pubescent;

beak 4-9 cm, plumose.

Clematis hirsutissima

Clematis tangutica
Distribution
from FNA
AZ; CO; ID; MT; NE; NM; OK; OR; SD; UT; WA; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AB; BC; MB; SK; YT; Asia (China, India, Mongolia)
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

The varieties of Clematis hirsutissima, although highly dissimilar in their extreme forms, intergrade extensively in Wyoming, Colorado, and Utah.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Varieties 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Leaflets and lobes linear to narrowly lanceolate, 0.5–6(–10) mm wide.
var. hirsutissima
1. Leaflets and lobes narrowly to broadly lanceolate or ovate, 5–15 mm wide.
var. scottii
Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Clematis > subg. Viorna Ranunculaceae > Clematis > subg. Clematis
Sibling taxa
C. addisonii, C. albicoma, C. baldwinii, C. bigelovii, C. catesbyana, C. coactilis, C. columbiana, C. crispa, C. drummondii, C. fremontii, C. glaucophylla, C. lasiantha, C. ligusticifolia, C. morefieldii, C. occidentalis, C. ochroleuca, C. orientalis, C. pauciflora, C. pitcheri, C. recta, C. reticulata, C. socialis, C. tangutica, C. terniflora, C. texensis, C. versicolor, C. viorna, C. virginiana, C. vitalba, C. viticaulis, C. viticella
C. addisonii, C. albicoma, C. baldwinii, C. bigelovii, C. catesbyana, C. coactilis, C. columbiana, C. crispa, C. drummondii, C. fremontii, C. glaucophylla, C. hirsutissima, C. lasiantha, C. ligusticifolia, C. morefieldii, C. occidentalis, C. ochroleuca, C. orientalis, C. pauciflora, C. pitcheri, C. recta, C. reticulata, C. socialis, C. terniflora, C. texensis, C. versicolor, C. viorna, C. virginiana, C. vitalba, C. viticaulis, C. viticella
Subordinate taxa
C. hirsutissima var. hirsutissima, C. hirsutissima var. scottii
C. tangutica var. tangutica
Synonyms Coriflora hirsutissima C. orientalis var. tangutica
Name authority Pursh: Fl. Amer. Sept. 2: 385. (1814) (Maximowicz) Korshinsky: Izv. Imp. Akad. Nauk, ser. 5, 9: 399. (1898)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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