Flora of North America species comparison

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Clematis texensis

crimson clematis, scarlet clematis, scarlet leather flower, Texas clematis
Stems

viny, to 3 m, glabrous or sometimes ± hirsute near nodes.
Leaf

blade 1-pinnate;

leaflets 6-10 plus additional tendril-like terminal leaflet, ovate to nearly round, unlobed, 2-3-lobed, or most proximal occasionally 3-foliolate, 1-9 × 1-6 cm, leathery, ± prominently reticulate adaxially;

surfaces abaxially usually glabrous, occasionally sparsely pubescent, glaucous.
Inflorescences

axillary, 1-7-flowered.
Flowers

ovoid to urn-shaped;

sepals rose-red to scarlet abaxially and at tip adaxially, ovate-lanceolate, 1.5-3 cm, margins not expanded, thick, not crispate, tomentose, tips acute to acuminate, recurved, abaxially glabrous.
Achenes

bodies appressed-pubescent;

beak 4-7 cm, plumose.
2n

= 16.

Clematis texensis
Phenology Flowering spring–summer (Mar–Jun).
Habitat Woodlands, calcareous cliffs, and stream banks
Elevation 80-700 m (300-2300 ft)
Distribution
from FNA
TX
[WildflowerSearch map]
[BONAP county map]
Discussion

Although widely cultivated because it is the only species of Clematis with truly red flowers, C.texensis is native only to the southeastern part of the Edwards Plateau, Texas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3.
Parent taxa Ranunculaceae > Clematis > subg. Viorna
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. hirsutissima, 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. versicolor, C. viorna, C. virginiana, C. vitalba, C. viticaulis, C. viticella
Synonyms Viorna coccinea
Name authority Buckley: Proc. Acad. Nat. Sci. Philadelphia 13: 448. (1862)
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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