American Bells



Comparison Table - Section Viornae




  Distribution Habit Flower Color Flower Position Leaf Dissection Venation Leaf Texture Notes
addisonii NC Virginia: Botetourt, Montgomery, Roanoke, Rockbridge Counties erect, < 1 m purple to purplish-red, whitish toward tip

Clematis addisonii
mostly terminal simple, or distal leaves 1-pinnate not reticulate, not raised thin back of leaflets glaucous and glabrous
carrizoensis NE Texas: Cherokee, Smith, Van Zandt Counties viny, > 1 m yellowish- cream, lilac-tinged toward base

mostly axillary 1-pinnate to pinnate-ternate, proximal leaflets commonly lobed or 3-foliate reticulate, raised leathery back of leaflets glaucous and glabrous
crispa E & S USA: AL, AR, FL, GA, IL, KY, LA, MO, MS, NC, OK, SC, TN, TX, VA viny, > 1 m pale blue, pale pink or bluish-purple to violet-purple

Clematis crispa
mostly terminal 1-pinnate to pinnate-ternate, rarely simple or 3-foliate, proximal leaflets commonly lobed not reticulate, not raised thin  
glaucophylla CS & SE USA: AL, AR, FL, GA, KY, LA, MO, MS, NC, OK, SC, TN, VA viny, > 1 m cherry red to reddish-purple

Clematis glaucophylla
mostly axillary 1-pinnate to pinnate-ternate, proximal leaflets commonly lobed or 3-foliate not reticulate, not raised thin back of leaflets glaucous and glabrous
morefieldii N Alabama: Madison County
S Tennessee: Franklin County
viny, > 1 m pinkish, greenish toward tip

Clematis morefieldii © Tennessee Div. of Natural Heritage, Dept. of Environment and Conservation/University of Tennessee Herbarium
mostly axillary 1-pinnate to pinnate-ternate, proximal leaflets commonly lobed reticulate, not raised thin Stems are cobwebby tomentose/ villous pubescent. Bracts at or close to the base of peduncle.
pitcheri C & S USA: AR, IA, IL, IN, KS, KY, MO, MS, NE, NM, OK, TN, TX viny, > 1 m purplish-blue to purplish-violet to brick red, sometimes whitish toward tip

Clematis pitcheri
mostly axillary 1-pinnate to pinnate-ternate, many simple, proximal leaflets commonly lobed or 3-foliate reticulate, raised * leathery or thin Mature fruits with glabrous or silky tails, not feathery.

*Tertiary and quaternary veins scarcely or not raised.
reticulata S & SE USA: AL, AR, FL, GA, KY, LA, MS, OK, SC, TX viny, > 1 m pale lavender to purple, greenish toward tip

Clematis reticulata
mostly axillary 1-pinnate to pinnate-ternate, proximal leaflets commonly lobed or 3-foliate finely reticulate, raised leathery Mature fruits with feathery tails.

Quaternary veins distinctly raised.
texensis C Texas: Bandera, Blanco, Comal, Kendall, Kerr, Llano, Travis Counties viny, > 1 m scarlet to rose-red

Clematis texensis  © Miguel E. Viso
mostly axillary 1-pinnate to pinnate-ternate, proximal leaflets commonly lobed or 3-foliate reticulate, raised leathery back of leaflets glaucous and glabrous
versicolor C USA: AL, AR, KY, MO, OK, TN, TX viny, > 1 m purplish-red to bluish- lavender, creamy or greenish toward tip

Clematis versicolor
mostly axillary 1-pinnate, proximal leaflets mostly unlobed, occasionally 2-3 lobed reticulate, raised leathery back of leaflets glaucous and glabrous
viorna EC, NE & S USA: AL, AR, DC, DE, GA, IL, IN, KY, MD, MO, MS, NC, OH, PA, SC, TN, VA, WV viny, > 1 m pale lavender to reddish purple, cream-yellow toward tip

Clematis viorna
mostly axillary 1-pinnate, some simple, proximal leaflets commonly lobed or 3-foliate not reticulate, not raised thin Stems without cobwebby pubescence, bracts well above base of peduncle/ pedicel.

Sources:

Estes, D. A new narrowly endemic species of Clematis from Northeastern Texas. Sida 22(1):65–77, 2006. (pdf)

Grey-Wilson, C. Clematis The Genus. Timber Press, OR. Pp. 200-216, 2000.

Pringle, J.S. Clematis. In: Flora of North America. Volume 3. www.efloras.org, 2007.

 

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Species:

addisonii
albicoma
baldwinii
carrizoensis
coactilis
crispa
fremontii
glaucophylla
morefieldii
ochroleuca
pitcheri
reticulata
socialis
texensis
versicolor
viorna
viticaulis






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