504 SAXIFRAGACEAE 
above, more or less pubescent beneath, especially on the nerves : hypanthium campanulate, 
nearly regular, strigose-villous: sepals ovate or oval-ovate, 1 mm. long, obtuse: petals 
spatulate, pinkish, slightly longer than the sepals: stamens conspicuously exserted. 
In rocky soil, Virginia to Illinois and Tennessee. Summer. 
5. Heuchera villósa Michx. Foliage quite glabrous or villous.  Rootstocks rela- 
tively slender: stems erect, usually tufted, 2-4 dm. tall, naked or bearing a few scales: 
leaf-blades 5-10 cm. broad, suborbicular or orbicular-ovate in outline, slightly ciliate, 
aeutely 7-9-lobed, the surfaces sparingly pubescent, or bristly on the nerves beneath, the 
lobes toothed ; petioles loosely villous or nearly glabrous: pedicels as long as the flower or 
longer: hypanthium and calyx 3-4 mm. long at maturity, slightly hairy: sepals ovate: 
petals linear-spatulate, 2-2.5 mm. long, about twice as long as the sepals, white or nearly 
$0: stamens much exserted : capsule much exceeding the calyx. 
On cliffs and rocks, in and near the mountains, Virginia and West Virginia to Georgia and Ten- 
nessee. Summer and fail. 
6. Heuchera macrorhiza Small. Foliage often copiously villous. Rootstocks 
stout, woody, 1-3 dm. long, scaly : stems erect or nearly so, 2-5 dm. tall, naked or with 
several scales, surpassing the leaves: leaves basal; petioles 1-3 dm. tall, densely villous ; 
blades suborbieular in outline, 8-20 em. in diameter, shallowly 5-9-lobed (lobes much 
broader than long), sharply, closely and irregularly dentate with apiculate teeth pubescent 
on both sides, sparingly so above, densely ciliate, cordate: panicles 5-12 cm. long, nearly 
cylindric : hypanthium and calyx densely pubescent, 2-2.5 mm. long at maturity: sepals 
oblong or ovate-oblong : petals linear with a filiform base, fully twice as long as the sepals: 
capsule about equalling the calyx at maturity. 
On river bluffs, Kentucky and Tennessee. Summer. 
7. Heuchera parviflora Bartl. Foliage rather bright green to hoary. Stems erect, 
solitary or tufted, pubescent like the petioles, 1-6 dm. tall, sometimes bearing small scales: 
leaf-blades orbicular-reniform or reniform, 5-14 cm. broad, shallowly 5-9-lobed, the lobes 
crenate, the surfaces sparingly pubescent to densely hoary ; petioles slender, longer than 
the blades, glandular-hirsute to villous-lanate: hypanthium campanulate, nearly 2 mm. 
long, beset with scattered soft hairs: petals linear-spatulate, about 2.5 mm. long, thrice 
longer than the ovate sepals: stamens conspicuously exserted. [H. Rugelii Shuttlw. ] 
On cliffs or in rocky places, Kentucky to Missouri, North Carolina, middle Georgia and Alabama. 
Summer and fall. 
8. Heuchera hirsuticaülis (Wheelock) Rydb. Foliage hirsute. Stems stout, 5-6 
dm. tall, like the nerves of the leaf-blades thickly beset with spreading whitish or yellowish 
hairs: leaves mainly basal; blades suborbicular or reniform, 2.5-10 em. broad, with 5-7 
obtuse crenate-apiculate ciliate lobes, glaucous above, pale green beneath, the sinus broad 
and deep; petioles mostly longer than the blades, pubescent like the stems: panicle- 
branches spreading: hypanthium about 4 mm. long, campanulate, minutely glandular: 
sepals somewhat unequal, obtuse, about as long as the hypanthium : petals spatulate, green- 
ish or pinkish, not surpassing the sepals, minutely glandular: seeds about 0.5 mm. long. 
On shaded banks, Indiana and Missouri to Louisiana. Spring. 
9. Heuchera Americàna L. Foliage sparingly glandular-pubescent or nearly gla- 
brous. Stems erect, 3-8 dm. tall, naked or with a few small scales, glandular-pubescent : 
leaves basal ; blades ovate to suborbieular, 5-10 em. broad, cordate, 7-9-lobed, glabrous or 
with a few scattered hairs on both surfaces, the lobes rounded, crenate; petioles pubescent 
like the stem: panicles 1-3 dm. long: hypanthium broadly campanulate, fully 1 mm. long 
during anthesis: sepals ovate, obtuse: petals spatulate, clawed, about 2 mm. long, about 
equalling the sepals, entire: stamens much exserted. 
In woods or rocky soil, Ontario to Minnesota, Georgia and Louisiana. Spring and summer. 
10. Heuchera calycósa Small. Resembling H. Americana, but more slender. Stems 
and petioles more or less puberulent: leaf-blades ovate or orbicular-ovate, 5-10 cm. long, 
shallowly lobed, ciliate and pubescent near the margins: pedicels very slender: hypap- 
thium turbinate, barely 1 mm. long during anthesis: sepals broadly ovate, about 2 mm. 
long, rounded at the apex: petals oblong or spatulate-oblong, much surpassed by the 
sepals, acute or apiculate, entire. 
In mountain woods, Georgia and Alabama. Spring. 
11. Heuchera lancipétala Rydb. Foliage sparingly glandular-hirsute. Stems stout, 
5-7 dm. high, naked or nearly so: leaf-blades orbicular-reniform, 4-8 cm. broad, glabrous 
except the ciliate margins and the nerves beneath: panicle narrower and more simple 
than that of H. Americana: hypanthium open-campanulate beyond the turbinate base, 
nearly equilateral : sepals ovate to oblong-ovate, 1.5-2 mm. long, obtuse, ciliolate: petals 
oblanceolate, whitish or pinkish : stamens about twice as long as the petals. 
In woods, Kentucky and Tennessee. Spring and summer. 
