Book  (Oct 2001)  Page(s) 382.  Includes photo(s).

Book  (1914)  Page(s) 295.  
 
*1015. Clematis latifolia Caroliniensis Viornae facie semine longiore . C. Viorna L.

Book  (1904)  Page(s) 332.  Includes photo(s).
 
Climbing plants.
Flowers smaller, pitcher-shaped or tubular.
21.  Clematis Viorna, Linn.  Figure 491.  Climbing 8-10 feet; leaves not glaucous nor coriaceous; leaflets subcordate-ovate to ovate-laceolate, slightly reticulated; flowers solitary, on long peduncles, pitcher-shaped; sepals 4, 1 inch long, variable in color, often dull purple, thick and leathery, tips often recurved; styles plumose when mature, June-August.  Pennsylvania to Alabama and westward.  Lav. 17.

Book  (1901)  Page(s) 180.  Includes photo(s).
 
Leather-Flower. (Plate LVII.) Clématis Viorna. Family Crowfoot. Colour Reddish purple. Odour Scentless. Range Tennessee, Georgia and West Virginia to Pennsylvania and westward.  Time of Bloom May-July.   
Flowers: solitary; nodding. Calyx: campanulate with five, large, ovate sepals, thick and woolly inside and tapering into a recurved point; leathery. Corolla: none. Achenes: broadly ovoid; flat, with long feathery, pale yellow tails. Leaves: opposite; mostly pinnate. Leaflets: entire, lobed or trifoliate pointed at their apices, glabrous. A vine climbing often ten or twelve feet high by means of the tendril bearing leaves.
Running vigorously up and down rail fences, meandering by the borders of streams, intermingling itself with shrubbery and even ascending small trees, this beautiful climber first weaves in and out its bell-like flowers, and then spreads to the breeze rounded balls of achenes with pale yellow and fleecy tails. Much of the beauty of the genus, indeed, lies in this clever device by which their tiny seeds may be borne, as kites with long well-balanced tails, to distances far from the parent plant, and thus every year increase their holdings of the soil.

Magazine  (30 Jul 1892)  Page(s) 73.  
 
C. viorna Lin., de la Caroline ; tige d’un mètre et demi, fleurs violettes.

Magazine  (1 Dec 1881)  Page(s) tab 6594.  
 
Review of the North American climbing species of Clematis, with compound leaves and thick or thickish erect sepals.
A. Sepals of the ovoid or somewhat conical and comparatively closed flower very thick, softly leathery, glabrous or almost so (not canescent) except the inflexed margins, their tips not dilated nor conspicuously thin-margined ; styles wholly persistent in fruit and plumose throughout.
1. C. Viorna, L., of the Atlantic States east of the Mississippi; figured only by Dillenius and in Jacquin, Eclogia, tab. 32, by the former under the good character "flore violaceo clauso." The colour is usually of a dull reddish purple.
2. C. coccinea,

Magazine  (1877)  Page(s) 271.  
 
Clematis Viorna (Lin.); Caroline; pourpre.

Book  (1872)  Page(s) 151-152.  
 
C. VIORNA, Linnæus.—This North American species is a woody climber, growing from six to twelve feet high, and having pinnate leaves, with the leaflets entire, three-lobed, or ternate. The flowers are bellshaped, drooping, of a reddish-purple outside, whitish inside, consisting of connivent acuminated sepals, recurved at the tip and remarkably stout in texture, whence in America it is called Leather-flower. It is figured by Dillenius, in the Hortus Elthamensis (t. 118), and Jacquin gives an excellent coloured representation of it in his Ecloga Plantarum (t. 32).

Book  (1863)  Page(s) 1015.  
 
C. Viorna, L.; C. VIORNE. De la Caroline. Tiges de 1.50 à 3m; feuilles de 9 à 12 folioles; de juin en sept., fleurs en cloche renversée, épaisses, charnues, pourpres en dehors, jaunâtres en dedans. Elle perd souvent ses tiges en hiver, mais les nouvelles fleurissent la même année. Multipl. de graines aussitôt leur maturité.

Magazine  (Sep 1853)  Page(s) 203.  
 
Memoranda from Kew.
Some of the more interesting summer-flowering things are the several kinds of Clematis, a tribe of plants with which most cultivators are familiar, as few gardens are to be found that do not possess some of them. [...]
The following are the best kinds, all hardy, and easily procurable at a trifling expense:
Clematis viorna.  This is a North American species, of robust growth.  It has rather large leaves, and fleshy flowers about half an inch long, which are of a globular cone shape, and reddish outside.