VOL. II.] 



2. Heuchera villosa Michx. 

 Hairy Heuchera. (Fig. 1844.) 



Heuchera villosa Michx. Fl. Bor. Am. i: 172. 

 1803. 



Stem erect, leafless, or rarely bearing a 

 tew small leaves below, generally villous- 

 pubescent with brownish hairs, as are also 

 the long petioles and the veins on the 

 lower surfaces of the leaves. Basal leaves 

 3 / -5 / wide, orbicular or sometimes longer 

 than broad, sharply or obtusely and deeply 

 y-9-lobed, the lobes dentate or serrate; 

 flowering calyx \' f -\y 2 " long, campanu- 

 late, regular; petals linear-spatulate, white 

 or nearly so, about twice as long as the 

 calyx-lobes; stamens much exserted. 



In rocky places, Virginia and West Vir- 

 ginia to Georgia and Tennessee. June-Sept. 

 Called also American Sanicle. 



SAXIFRAGE FAMILY. 



179 



4. Heuchera pubescens Pursh. 

 Downy Heuchera. (Fig. 1846.) 



H. pubescens Pursh, Fl. Am. Sept. 187. 1814. 

 Stems rather stout, i-3 high, densely 

 glandular-pubescent, at least above, usually 

 bearing i or 2 small leaves. Basal leaves 

 slender-petioled, broadly ovate or orbicular, 

 cordate, 2 / -4 / wide, 5~7-lobed, the lobes 

 rounded or acute, crenate or dentate; pan- 

 icle loose; flowering calyx oblong-campan- 

 ulate, somewhat oblique, 3 // -4 // long, mi- 

 nutely glandular, its lobes usually unequal; 

 petals broadly spatulate, purplish, slightly 

 exceeding the calyx-lobes; stamens scarcely 

 or slightly exserted. 



In rich woods, mountains of Pennsylvania 

 to Kentucky and North Carolina. Ascends to 

 4000 ft. in North Carolina. May-June. 



3. Heuchera Americana L,. Alum- 

 root. (Fig. 1845.) 



Heuchera Americana L. Sp. PI. 226. 1753. 



Stem rather stout, 2-3 high, leafless or 

 with a few small leaves, more or less gland- 

 ular-hirsute. Basal leaves loug-petioled, 3'- 

 4' wide, with 7-9 rounded crcnate-dentate 

 lobes, the older ones glabrous, or with scat- 

 tered hairs on the upper surface; flowering 

 calyx broadly campanulate, nearly regular, 

 i^ // ~3 // long; petals very small, green- 

 ish, usually not exceeding the calyx-lobes, 

 stamens much exserted; anthers orange. 



In dry or rocky woods, Ontario to Connecti- 

 cut, west to Minnesota, south to Alabama and 

 Louisiana. Ascends to 3000 ft. in Virginia. 

 May-Aug. 



fl 



