Clematis fremontii

S. Watson

Proc. Amer. Acad. Arts 10: 339. 1875.

Common names: Fremont's clematis
EndemicIllustrated
Synonyms: Clematis fremontii var. riehlii R.O. Erickson Viorna fremontii
Treatment appears in FNA Volume 3.

Stems erect, 1.5-4 (-7) dm, moderately to densely villous, sometimes sparsely so near nodes. Leaves simple. Leaf-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. Inflorescences terminal, flowers solitary; bracts absent. Flowers 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. Achenes: 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. 2n = 16.


Phenology: Flowering spring.
Habitat: Calcareous prairies and glades
Elevation: 100-700 m

Discussion

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.

Selected References

None.

Lower Taxa

None.

"thick" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Clematis fremontii"
flattened +
James S. Pringle +
S. Watson +
cuneate +, truncate +  and cordate +
Undefined subg. Viorna +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
curved +  and straight +
variable +
sparsely appressed-pubescent +  and nearly glabrous +
plumose +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
cobwebby-tomentose +  and pubescent +
scale-like;leaflike +
globose;cylindric +
Fremont's clematis +
bracteate +  and 3-7-flowered +
paired +  and solitary +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Kans. +, Mo. +  and Nebr. +
100-700 m +
filiform +  and flattened +
bracteate +  and 3-7-flowered +
paired +  and solitary +
showy +  and inconspicuous +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
sessile +  and aggregate +
flattened-ellipsoid;terete;flattened-ellipsoid;terete;lenticular +
Calcareous prairies and glades +
axillary +  and terminal +
2-pinnate +  and 1-pinnate +
5 cm50 mm <br />0.05 m <br /> (14 cm140 mm <br />0.14 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (11 cm110 mm <br />0.11 m <br />) +
cordate +  and orbiculate oblong lanceolate or oblanceolate lobed or unlobed +
cordate +  and orbiculate oblong lanceolate or oblanceolate lobed or unlobed +
palmate +  and pinnate +
crispate;not crispate +
1-3 mm +  and not expanded +
thick;thin;wide +
1-many-flowered +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
distinct +
conspicuous +
reduced +
Flowering spring. +
5 +  and 150 +
Proc. Amer. Acad. Arts +
not arillate +  and stalked +
pale green;pale blue-violet;purple +
not persistent +
distinct +
abaxially glabrous +  and silky hirsute or tomentose +
3 +  and 6 +
lanceolate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Endemic +  and Illustrated +
persistent +
not glaucous;villous-tomentose;glabrous +
Clematis fremontii var. riehlii +  and Viorna fremontii +
Clematis fremontii +
Clematis subg. Viorna +
species +
spreading +  and recurved +
abaxially glabrous +  and sparsely villous +
acuminate +
annual +  and perennial +