Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Clematis texensis

Clematis addisonii

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

Addison Brown's clematis, Addison Brown's leather-flower, Addison's leather-flower, Addison's virgin's-bower
Stems

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

usually ascending to erect, occasionally somewhat viny, 0.6-1 m, glabrous.
Leaves

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.

all simple, blade often 1-pinnate on distal and middle leaves on vigorous plants 4-13 × 2-9.5 cm;

leaflets 2-6 plus additional tendril-like terminal leaflet, ovate, unlobed, 1.5-6 × 1-4.5 cm, not prominently reticulate;

surfaces abaxially glabrous and glaucous.
Inflorescences

axillary, 1-7-flowered.

terminal and axillary, flowers solitary.
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.

ovoid to broadly urn-shaped;

sepals purple or reddish purple, whitish toward tips, ovate-lanceolate, 1.2-2.5 cm, margins not expanded, thick, not crispate, tomentose, tips acute, spreading, abaxially glabrous.
Achenes

bodies appressed-pubescent;

beak 4-7 cm, plumose.

bodies puberulent;

beak 2.5-3.5 cm, plumose.
2n

= 16.

= 16.

Clematis texensis

Clematis addisonii
Phenology Flowering spring–summer (Mar–Jun). Flowering spring–early summer.
Habitat Woodlands, calcareous cliffs, and stream banks Calcareous, dry woods, glades, rock outcrops
Elevation 80-700 m (300-2300 ft) 200-600 m (700-2000 ft)
Distribution
from FNA
TX
[WildflowerSearch map]
[BONAP county map]
from FNA
VA
[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.)

Of conservation concern.

Clematis addisonii is known only from Botetourt, Montgomery, Roanoke, and Rockbridge counties in western Virginia. Reports of this infrequent species from other southeastern states have been based on misidentified specimens (W. M. Dennis 1976).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Clematis > subg. Viorna 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
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. texensis, C. versicolor, C. viorna, C. virginiana, C. vitalba, C. viticaulis, C. viticella
Synonyms Viorna coccinea Viorna addisonii
Name authority Buckley: Proc. Acad. Nat. Sci. Philadelphia 13: 448. (1862) Britton: Mem. Torrey Bot. Club 2: 28. (1890)
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers