RAXUNCULACEAE. 



[Vol.. II. 



3. Clematis crispa L. Marsh 

 Clematis. (Fig. 1584.) 



Clematis crispa L. Sp. PI. 543. 1753- 



Clematis cylindrica Sims, Hot. Mag. pi. 

 1160. 1809. 



A climbing vine. Leaves pinnate; 

 leaflets mostly trifoliolate, the ultimate 

 divisions entire or occasionally lobed, 

 glabrous and thin; flowers solitary, 

 nodding, bluish-purple, 9"-i8" long; 

 calyx cylindric below, but the sepals 

 thin and widely spreading above, their 

 margins undulate; filaments hairy; 

 persistent styles silky, not plumose. 



In marshes, southeastern Virginia to 

 Florida and Texas. May-June. The most 

 beautiful of our native species. 



2. Clematis ligusticifolia Xutt. West- 

 ern Virgin's Bower. (Fig. 1583.) 



Clematis ligusticifolia Nutt.; T. & G. Fl. N. A. i: 

 9- 1838. 



A trailing and climbing vine, nearly glabrous. 

 Leaves pinnately 5-foliolate, the lower pair of 

 leaflets generally remote from the upper; leaflets 

 oblong or ovate-lanceolate, acute and sometimes 

 acuminate at the apex, rounded or cuneate at the 

 base, toothed, lobed or divided; flowers white, in 

 leafy panicles, 6 // ~9 // broad when expanded, the 

 stamens about equalling the sepals; filaments 

 glabrous; persistent styles plumose throughout, 

 nearly white, i"-2 / long. 



\\VsternNebraska, Missouri, and throughout the 

 Rocky Mountains, west to the Pacific Coast. June- 

 Aug. 



4. Clematis Simsii Sweet. Sims' 

 Clematis. (Fig. 1585.) 



Clematis cordata Sims, Bot. Mag. />/. iSif>. 

 1816. Not Pursh, 1814. 



Clematis Simsii Sweet, Hort. Brit, i: i. 1827. 

 Clematis Pilcheri T. & G. Fl. N. A. i: 10. 1838. 



A high climbing vine, the branches more 

 or less pubescent. Leaves pinnate; leaflets 

 entire, lobed or trifoliolate, thick, reticulated, 

 generally mucronate; flowers solitary; calyx 

 campanulate, less than i' long, purplish, pu- 

 bescent; sepals with recurved margined tips; 

 filaments hairy; persistent styles more or 

 less pubescent, about i' long. 



Southern Indiana to Missouri and Texas. 

 May-Aug. 



