Flora of North America species comparison

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Clematis vitalba

Clematis glaucophylla

evergreen clematis, old-man's beard, Traveler's-joy, Traveler's-joy clematis, white virgin's-bower

glaucous clematis, whiteleaf leather flower
Stems

climbing with tendril-like petioles and leaf-rachises, to 12 m. Leaf blade pinnately 5-foliolate;

leaflets cordiform, 8 × (2-)3-5(-6) cm, margins entire to regularly crenate or dentate;

surfaces abaxially minutely pubescent on veins, adaxially glabrous.

viny, to 5 m, glabrous.
Leaf

blade 1-pinnate;

leaflets 4-10 plus additional tendril-like terminal leaflet, proximal leaflets usually 3-lobed or 3-foliolate, distal leaflets usually unlobed, ovate, 3-10 × 2-7.5 cm, ± thin, not prominently reticulate adaxially;

surfaces abaxially glabrous and glaucous.
Inflorescences

axillary and terminal, (3-)5-22-flowered cymes.

axillary, 1-3-flowered;

bracts about 1/3 distance from base of peduncle.
Flowers

bisexual;

pedicel 1-1.5 cm, slender;

sepals wide-spreading, not recurved, white to cream, elliptic or oblanceolate to obovate, ca. 1 cm, length ca. 2 times width, abaxially and adaxially tomentose;

stamens ca. 50;

filaments glabrous;

staminodes absent;

pistils 20 or more.

ovoid;

sepals deep rose-red to purplish red, ovate-lanceolate, 2-2.5 cm, margins not expanded, thick, not crispate, tomentose, tips long-acuminate, ± recurved, abaxially glabrous.
Achenes

nearly terete, not conspicuously rimmed, densely pubescent;

beak ca. 3.5 cm.

bodies appressed-pubescent;

beak 5-6 cm, plumose.
2n

= 16.

Clematis vitalba

Clematis glaucophylla
Phenology Flowering summer (Jun–Aug). Flowering spring–summer.
Habitat Roadsides, waste ground, secondary growth Stream banks in rich, neutral to slightly acid soils
Elevation 0-100 m (0-300 ft) 0-100 m (0-300 ft)
Distribution
from FNA
ME; OR; WA; BC; ON; native to Europe; n Africa [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA; MS; OK
[WildflowerSearch map]
[BONAP county map]
Discussion

Clematis vitalba is naturalized in only a few sites in eastern North America and northwestern Oregon to the Puget Sound.

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

Reports of Clematis glaucophylla from other southeastern states have been based on misidentified specimens (W. M. Dennis 1976). Recent reports of the species in Arkansas, Kentucky, Louisiana, and Virginia have not been confirmed.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3. FNA vol. 3.
Parent taxa Ranunculaceae > Clematis > subg. Clematis 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. texensis, C. versicolor, C. viorna, C. virginiana, 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. 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 glaucophylla
Name authority Linnaeus: Sp. Pl. 1: 544. (1753) Small: Bull. Torrey Bot. Club 24: 337. (1897)
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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