I2 4 



RANUNCULACEAE. 



VOL. II. 



4. Viorna versicolor Small. Pale Leather- 

 flower. Fig. 1947. 



i 



Clematis versicolor Small ; Britton, Man. 421. 



1901. 



Viorna versicolor Small, Fl. SE. U. S. 438. 1903. 



A branching vine, up to 12 long, glabrous or 

 slightly pubescent below the nodes. Leaves pinnate, 

 slender-petioled; leaflets firm, apiculate, oblong to 

 ovate-lanceolate, -3' long, conspicuously reticulate, 

 very glaucous beneath ; sepals thin, purplish, lanceo- 

 late, about 10" long, glabrous, slightly recurved at 

 the tip, achenes pubescent; persistent styles plumose, 

 white or nearly so. 



Rocky ledges, Missouri and Arkansas. July. 



Viorna Viorna (L.) Small, 

 flower. Fig. 1948. 



Leather- 



Clematis Viorna L. Sp. PI. 543. 1753. 



Viorna Viorna Small, Fl. SE. U. S. 439. 1903. 



A vine, climbing to the height of 10 or 

 more over bushes in rich soil. Leaves mostly 

 pinnate; leaflets glabrous, entire, lobed or tri- 

 foliolate ; uppermost and lowest leaves often 

 entire; calyx ovoid-campanulate, purple, the 

 sepals remarkably thick; filaments about as 

 long as the anthers; persistent styles plumose 

 throughout, i' long or more, brownish. 



Banks and thickets, southern Pennsylvania to 

 West Virginia, Georgia and Indiana. Ascends to 

 4000 ft. in Virginia. May-July. 



Viorna flaccida Small, differing by entire, more 

 pubescent leaflets, the calyx lavender with green 

 tips, occurs in Kentucky and Tennessee. 



Viorna Ridgwayi Standley, of Illinois, has 

 long-tipped leaf-lobes or leaf-segments. 



6. Viorna glaucophylla Small. Glaucous 

 Leather-flower. Fig. 1949. 



Clematis glaucophylla Small, Bull. Torr. Club 24: 337. 

 1897. 



Viorna glaucophylla Small, Fl. SE. U. S. 439. 1903. 



A red-stemmed vine up to 15 long. Leaves cither 

 simple and entire or lobed, or trifoliolate, ovate, 4' 

 long or less, acute, acuminate or apiculate at the 

 apex, mostly cordate or subcordate at the : 

 rather strongly nerved, pale and glaucous beneath 

 when mature; calyx red-purple, glabrous, gl 

 conic-ovoid, about i' long, the sepals thick, lanceo- 

 late, their tips a little spreading; anthers short- 

 tipped, about as long as the filaments; achenes 

 nearly orbicular; persistent styles plumose. 



Thickets and river-banks, Kentucky and North Caro- 

 lina to Alabama and northern Florida. May-July. 





