SAXIFRAGACEAE 503 
7. HEUCHERA L. 
Perennial, mostly scapose herbs, with horizontal rootstocks and pubescent or glandu- 
lar foliage. Leaves chiefly basal: blades thickish, coarsely toothed or lobed, long- 
petioled : petioles with adnate stipules. Flowers perfect, in rather narrow panicled cymes. 
Sepals 5, unequal, imbricated. Petals 5, or very rarely wanting, inserted at the top of the 
hypanthium, entire. Stamens 5, inserted with the petals: filaments slender. Ovary 
mostly inferior, l-celled : styles 2, elongated. Ovules numerous, borne on 2 parietal 
placentae. Capsule 2-beaked, 2-valved at the top between the styles. Seeds numerous 
with a muricate or hispidulous testa. ALUM-ROOT. Rock GERANIUM. : 
Flowering stems with 1-3 or rarely 4-5 leaves. 
Stamens slightly, if at all exceeding the petals: hypanthium decidedly turbinate at maturity. 
Leaf-blades with rounded lobes and crenate teeth: petals spatulate, 2-2.5 
mm. long, obtuse. 1. H. pubescens. 
Leaf-blades with sharp lobes and very sharp teeth: petals oblanceolate, 2.5-3 
mm. long, acute. 2. H. aceroides. 
Stamens about twice as long as the petals: hypanthium campanulate during 
anthesis or slightly turbinate at maturity. 
Stems and petioles glabrous or puberulent: hypanthium and calyx 3-4 mm. 
long during anthesis. 3. H. Curtisit. 
Stems and petioles villous : hypanthium and calyx2mm.longduringanthesis. 4. H. crinita. 
Flowering stems scape-like: leaves reduced to scales. 
Ec: hypanthium and calyx 2-5 mm. long during anthesis, slightly 
oblique. 
Petioles and stems hirsute or villous, rarely glabrate. 
Leaf-blades deeply lobed, the lobes acute. 
Leaves with ovate or suborbicular blades, the lobes triangular. 
Petioles sparingly pubescent or glabrate at maturity: pedicels"less 
pubescent than the hypanthium : middle lobe of the leaf-blade 
. relatively narrow. 
Petioles densely and shaggy pubescent : pedicels more pubescent than 
the hypanthium : middle lobe of the leaf-blade relatively broad. 
. H. villosa. 
. H. macrorhiza. 
Leaves with broadly reniform blades, the lobes broadly ovate. H. crinita. 
Leaf-blades shallowly lobed, the lobes obtuse. : ; 
Hypanthium and calyx about 2 mm. long during anthesis: petals white. . H. parviftora. 
gotten and calyx 4-5 mm. long during anthesis: petals greenish 
2 or purple. 
Petioles glabrous or puberulent : stems rarely slightly hirsute. 
Petals spatulate to oblong, shorter than the sepals. 
Hypanthium fully 1 mm. long during anthesis, this together with the 
ealyx becoming 4-5 mm. long. 9. H. Americana. 
Hypanthium barely 1 mm. long during anthesis, this together with the 
ealyx becoming 3 mm. long. 10. H. calycosa. 
Petals oblanceolate, twice as long as the sepals. 11. H. lancipetala. 
Flowers large: hypanthium and calyx 6-10 mm. long during anthesis, decidedly 
oblique. 12. H. longiftora. 
1. Heuchera pubéscens Pursh. Stems erect, 3-10 dm. tall, usually bearing several 
leaves, densely glandular-pubescent, at least above : leaf-blades suborbicular, varying from 
orbicular-ovate to orbicular-reniform, 5-10 em. broad, ciliate, 5-7-lobed, sparingly pubes- 
cent on both sides, or glabrous, the lobes rounded, crenate: panicle 1-4 dm. long, lax: 
flowering hypanthium campanulate, slightly oblique, together with the calyx 5-6 mm. 
long, minutely glandular: sepals ovate to ovate-oblong, obtuse: petals firm, spatulate, 
2-2.5 mm. long, entire, slightly exceeding the sepals, eroded, obtuse : stamens slightly if at 
all exserted. 
In woods, Pennsylvania to North Carolina and Tennessee. Spring and summer. 
2. Heuchera aceroides Rydb. Similar to H. pubescens in habit. Leaf-blades ovate, 
sharply lobed, the lobes dentate or serrate-dentate with very sharp teeth: flowering 
hypanthium long-campanulate, very oblique, together with the calyx 6-8 mm. long : sepals 
oblong : petals delicate, oblanceolate, 2.5-3.5 mm. long, manifestly surpassing the sepals, 
acute, eroded : stamens included. 
On hillsides, near Asheville, North Carolina. Spring. 
3. Heuchera Curtisii T. & G. Stems erect, 5-10 dm. tall, glabrous below, puberu- 
s above: basalleaves with suborbicular or reniform blades 3-8 cm. broad, with rounded 
obes and crenate, sometimes hispidulous above, ciliate: stem-leaves with orbicular or 
broadly ovate blades and acuminate teeth : panicle open, with diverging branches: hy- 
panthium puberulent : sepals oblong, 1.5-2 mm. long, obtuse: petals purple, spatulate, 
scarcely surpassing the sepals, puberulent. 
ue In rich woods, Virginia and North Carolina. Spring and early summer.—The variety in which the 
oit T ieri 3-5 leaves with cordate crenate blades and terminates in a narrow panicle, and whose 
ota consists of minute petals is H. Curtisii crendta Rydb 
1 4. Heuchera crinita Rydb. Stems stout, 5-8 dm. tall, with several scales or 1-3 
eaves, like the petioles villous with brownish hairs. Leaves mainly basal; blades sub- 
orbicular and more or less reniform, 9-22 cm. broad, glabrous or sparingly hispidulous 
co uy AA C 
. H. hirsuticaulis. 
