180 SAXIFRAGACEAE. . [Vou. II. 
5. Heuchera hispida Pursh. 
Rough Heuchera. 
(Fig. 1847.) 
Heuchera hispida Pursh, Fl. Am. Sept. 
188. 1814. 
Heuchera Richardsonit R. Br. Frankl. 
Journ. 766. pl. 29. 1823. 
Stem 2°-4° tall, hirsutely-pubescent 
or rarely nearly glabrous, usually leaf- 
less. Leaves 2/-3/ wide, on long and 
slender petioles, broadly ovate-orbicu- 
lar, with 5-9 shallow rounded dentate 
lobes; panicle strict, narrow; flowering 
calyx campanulate, very oblique, 3//-5’’ 
long, its lobes unequal; petals spatulate, 
slightly exceeding the calyx-lobes; 
stamens exserted, 
In woods, Virginia to western Ontario, 
west to Kansas, Manitoba and the North- 
west Territory, south in the Rocky Moun- 
tains to Montana and Idaho, May-June. 
Heuchera hispida hirsuticatlis Wheelock, Bull. Torr. Club, 17: 199. 1890. 
Very hirsute with white spreading hairs; flowering calyx slightly oblique, about 2"’ long; 
stamens much exserted. Probably a distinct species. On rocks, Missouri and Indiana. 
a. MITELLA LIL. Sp. Pl. 406. 1753. 
Erect perennial herbs, with long-petioled ovate or orbicular basal leaves, naked or 2- 
leaved scapes, and small white or greenish flowers in elongated spiciform racemes. Calyx-tube 
campanulate or hemispheric, adnate to the base of the ovary, its limb 5-lobed. Petals 5, 3- 
cleft or pinnatifid. Stamens 10 (sometimes 5); filaments short. Ovary globose, 1-celled; 
styles 2, short; ovules «. Capsule 1-celled, 2-valved at the apex, many-seeded. Seeds 
smooth, shining. [Diminutive of s7¢ra, a cap, from the form of the young pod. ] 
About 7 species, natives of North America and eastern Asia. Besides the following, about 4 
others occur on the Pacific Coast. 
Basal leaves ovate; scape with 2 opposite leaves. 1. M. diphylla. 
Basal leaves reniform; scape naked or 1-leaved near the base. 2. M. nuda. 
1. Mitella diphylla L. Two- 
leaved Bishop’s Cap, or Mitre- 
wort. (Fig. 1848. ) 
Mitella diphylia I,. Sp. Pl. 406. 1753. 
Scape 10’-18’ high, pubescent, bear- 
ing a pair of opposite nearly or quite 
sessile leaves near its middle. Basal 
leaves broadly ovate, cordate at the 
base, acute or acuminate at the apex, 
3-5-lobed, dentate, scabrous and with 
scattered hairs on both sides, 1/—2/ 
long; leaves of the scape similar, usu- 
ally smaller; spiciform raceme erect, 
3/-8’ long, the flowers distant; calyx- 
lobes and petals white; capsule flattish, 
broad, dehiscent above, the valves 
spreading. 
In rich woods, Quebec to Minnesota, 
North Carolina and Missouri. Ascends 
to 2600 ft. in Virginia. A third leaf is 
rarely borne on the scape at the base of 
the inflorescence. April-May. 
