Vor. IT.] SAXIFRAGE FAMILY. 179 
2. Heuchera vill6sa Michx. 
Hairy Heuchera. (Fig. 1844.) 
Heuchera villosa Michx. F1. Bor, Am. 1: 172. 
1803. 
Stem erect, leafless, or rarely bearing a 
few 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 
7-9-lobed, the lobes dentate or serrate; 
flowering calyx 1//-114’’ 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 Georgiaand Tennessee. June-Sept. 
Called also American Sanicle. 
3. Heuchera Americana L. Alum- 
root. (Fig. 1845.) 
Heuchera Americana I,. Sp. Pl. 226. 1753. 
Stem rather stout, 2°-3° high, leafless or 
with a few small leaves, more or less gland- 
ular-hirsute. Basal leaves long-petioled, 3/— 
4’ wide, with 7-9 rounded crenate-dentate 
lobes, the older ones glabrous, or with scat- 
tered hairs on the upper surface; flowering 
calyx broadly campanulate, nearly regular, 
1144//-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. 
4. Heuchera pubéscens Pursh. 
Downy Heuchera. (Fig. 1846.) 
HI, pubescens Pursh, Fl. Am. Sept. 187. 1814. 
Stems rather stout, 1°-3° high, densely 
glandular-pubescent, at least above, usually 
bearing 1 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. 
