Book  (Oct 2001)  Page(s) 161.  Includes photo(s).

Magazine  (1945)  Page(s) 33.  Includes photo(s).
 
Descriptions of Clematis on Colored Plate Opposite
Clematis crispa. Of the many species of Clematis with tubular or urn-shaped flowers, C. texensis and the marsh clematis, C. crispa, are the two best known in gardens.  The latter is a graceful climber from the South where it grows naturally in swamps and moist woods from Virginia to Texas.  It is hardy in New York City and grows to 8 or 10 ft.  The flowers open during the summer and vary from lavender to purple; the thick sepals are curved and spreading at the tips and give the flowers a very pleasing bell shape.  Like the Texas clematis it is attractive on pillars or trellises or in wild plantings clambering over low stone walls or shrubbery. This species has produced several interesting hybrids.

Book  (1912)  Page(s) 84.  
 
Clematis L. — N. Pff. iii. 2. 62. — Ranunculaceæ-Clematideæ.
crispa L. — DC. i. 9; Kuntze, Mon. 136; B. M. t. 1892. — N. E. America. — ♄ §.  May-June.

Website/Catalog  (1907)  Page(s) 65.  
 
Clematis in pots to plant out in spring and summer.
General Collection.
13 crispa (viorna), purplish-white.

Book  (1906)  Page(s) 56.  
 
Clematis Crispa.  (Curled Clematis).  N. America.  1726.  6 feet.  Evergreen.  Flowers bell-shaped, nodding and fragrant, pale lilac or purple, peduncles one-flowered, shorter than the leaves; sepals leathery, reflexed with wavy margins, constricted above the middle.  June to October.  Syns. C. cordata; C. cylindrica; C. Shillingii; C. Simsii; C. viorna (Andr.).
A species that blooms freely and is quite hardy.  (Viorna type.)

Book  (1906)  Page(s) 54.  
 
Principal garden varieties of Clematis:
Viorna type.  (July to September.)
Crispa... Pinkish-white, fragrant.

Book  (1904)  Page(s) 332.  
 
Climbing plants.
Flowers smaller, pitcher-shaped or tubular.
22.  Clematis crispa, Linn.  A slender climber, reaching 3-4 ft.; leaves very thin; leaflets 3-5 or more, variable in outline and sometimes undivided, often 3-5-lobed; flowers purple, varying to whitish, cylindrical or bell-shaped, 1-2 inches long; point of sepals recurved; styles of fr. hairy but not plumose.  June-Sept.  Virginia to Texas.  B. R. 32: 60.  Lav. 14. — This and the allied species are fragrant.

Book  (1901)  Page(s) 180.  
 
Clematis crispa, marsh clematis, one of the most beautiful of the genus is a climber which also bears solitary and nodding flowers. They are fragrant, with a silvery sheen and look something as though they had been enameled with blue. About their margins the sepals are crisped like some tissue paper, while inside they are lined with a dense, velvety tomentum. Until frost almost they continue to bloom. The leaves are pinnate and bear mostly trifoliate, lanceolate leaflets which are for the most part entire, although occasionally they become lobed. Although feathery, the long persistent styles are quite without the fleecy, curved appearance of those of the already mentioned species. In marshes and river swamps the plant grows best, and in the locality between Texas and North Carolina.

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. ....
C Sepals moderately thick and more expanding; styles (in flower and fruit) either naked or silky-pubescent,
4. C. Pitcheri...
5. C. crispa, L., founded wholly upon the " Clematis flore crispo " of Dillenius — the figure and description of which is unmistakable — inhabits the low country from North Carolina, and perhaps Virgiuia, to Eastern Texas. Well marked by its membranous foliage with lax venation, and by the conspicuous dilated and undulate margins to the upper and spreading part (commonly half of the sepals when fully expanded. Styles always pubescent, sometimes as hairy as is represented in Gray, Gen. 111. tab. 2, never plumose. Here belong the figures in Bot. Mag. tab. 1892, and Bot. Reg. xxxii. tab. 60; G. cordata, Bot. Mag. tab. 1816 ; C. cylindrica, Bot. Mag. tab. 1160; also C. Viorna of Andr. Bot. Rep. tab. 71. But the C. crispa of De Candolle is the S. European C. campanifiora, C. parviflora, D.C. &c. The division and form of the leaflets is excessively variable ; moreover the species begins to blossom when low, erect, and quite herbaceous.
Var. Walteri (the C. Walteri, Pursh., C. cylindrica, var. Walteri, Torr. and Gray, &c.) is a very narrow-leaved form of this sort, and doubtless includes even the C. linearilota, D.C., figured by Delessert from a dried specimen with flower unnaturally outspread. — A. Gray, Herbarium, Kew, October 25th, 1881.

Magazine  (1877)  Page(s) 267, 271.  
 
p. 267: Clematis crispa (Lindl.); Amérique du Nord; pourpre.

p. 271: Clematis Shillingii (Veitch).
Clematis Viticella crispa (Simon Louis).