Clematis hirsutissima |
Clematis fremontii |
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Douglas' clematis, hairy clematis, leatherflower, sugar bowls, vaseflower |
Fremont's clematis, Fremont's leather flower |
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Stems | erect, not viny, 1.5-6.5 dm, hirsute (sometimes sparsely so in var. hirsutissima) or densely short, soft-pubescent to nearly glabrous. |
erect, 1.5-4(-7) dm, moderately to densely villous, sometimes sparsely so near nodes. |
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Leaves | 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. |
blade ovate-elliptic to broadly ovate, unlobed, 5-14 × 3.5-11 cm, leathery, prominently reticulate adaxially; surfaces abaxially glabrous or sparsely villous-tomentose on veins, not glaucous. |
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Inflorescences | terminal, flowers solitary. |
terminal, flowers solitary; bracts absent. |
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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. |
narrowly urn-shaped; sepals pale blue-violet to purple, pale green toward tips, lanceolate, 2-4 cm, margins not expanded or 1-3 mm wide, thin or ± thick, not crispate or slightly crispate, tomentose, tips acuminate, spreading to recurved, abaxially glabrous to sparsely villous. |
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Achenes | bodies densely long-pubescent; beak 4-9 cm, plumose. |
bodies proximally pubescent with silky or sparse short hairs, distally cobwebby-tomentose; beak 1.5-3(-3.5) cm, proximally silky-tomentose, sparsely appressed-pubescent to nearly glabrous toward tip. |
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2n | = 16. |
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Clematis hirsutissima |
Clematis fremontii |
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Phenology | Flowering spring. | |||||
Habitat | Calcareous prairies and glades | |||||
Elevation | 100-700 m (300-2300 ft) | |||||
Distribution |
AZ; CO; ID; MT; NE; NM; OK; OR; SD; UT; WA; WY
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KS; MO; NE
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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.) |
R. O. Erickson (1943) separated the Missouri plants as Clematis fremontii var. riehlii R. O. Erickson on the basis of their supposedly greater height and more widely spaced, proportionately narrower leaves. As noted by C. S. Keener (1967), however, so much overlap occurs in the ranges of variation of the Missouri and the Kansas-Nebraska populations that recognition of these varieties is not possible. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||
Parent taxa | Ranunculaceae > Clematis > subg. Viorna | Ranunculaceae > Clematis > subg. Viorna | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Coriflora hirsutissima | C. fremontii var. riehlii, Viorna fremontii | ||||
Name authority | Pursh: Fl. Amer. Sept. 2: 385. (1814) | S. Watson: Proc. Amer. Acad. Arts 10: 339. (1875) | ||||
Web links |