152 SAXIFRAGACE^.. (SAXIFRAGE FAMILY.) 



lar, 1 -celled, with 3 parietal placentae, many-seeded, loculicidally 3-valved at the 

 apex. — A very small (|' liigh) tufted annual herb, with alternate spatulate 

 leaves, and solitary terminal white flowers. 



1. L. spathulatum, Ell. — Close damp soil, Georgia (near Savannah) 

 and South Carolina. March and April. 



2. HEUCHERA, L. Alumroot. 



Calvx campanulate, coherent with the base of the ovary, 5-cleft. Petals 5, 

 spatulate Stamens .5. Styles 2. Capsule 1 -celled, with 2 parietal placentaE-, 

 manv-scedcd, 2-beaked, opening between the beaks. Seeds rough or hispid. — 

 Perennial herbs, with erect scape-like stems. Leaves chiefly radical, long-peti- 

 oled, roundish cordate, lobed or toothed. Stiimles adnate to the petioles. Flow- 

 ers cymose-panicled. 



* Calt/x eijnal-sided. 



1. H. Americana, L Rough-pubescent; scape leafless ; leaves crenately 

 or acutely 7 - 9-lobcd and toothed, the teeth mucronate ; panicles long, narrow, 

 loosely-flowered ; calyx as long as the white sjjatulate petals, much shorter than 

 the stamens and very slender styles. — Shady rocky places in the middle and 

 upper districts, Mississippi to North Carolina, and northward. April and May. 



— Scape 2° - 3° high, sometimes with one or two leaves. Leaves 2' - 4' wide, 

 on petioles 4' -12' long. 



2. H. villosa, Michx Scape bracted or somewhat leafy, and, like the 

 petioles and lower surface of the leaves, shaggy with long spreading rusty hairs ; 

 leaves sharply 5 - 7-lobcd and toothed . panicle loose ; flowers minute ; petals 

 white, very narrow, about as long as the stamens; styles elongated. (H. caules- 

 ccns, Pursh ) — Mountains of North Carolina and Tennessee. June and July. 



— Scape 1° - 3° high. Leaves 3' - 8' wide. Flowers about a line in length. 



3. H. Curtisii, Gray. Scape and petioles smooth ; leaves slightly lobed ; 

 branches of tlic panicle long, racemose, spreading ; petals purple ^ spatulate- 

 lanccolate, scarcely longer than the calyx ; stamens sliglitly pubescent. (H 

 caulcscens, /3, Torr. <f' Gray ) — Buncombe County, North Carolina, Curtis. — 

 Flowers larger than the last, 



* * Calijx ohlirpie. 



4. H. pubescens, Pursh. Glandular-pubcrulent; stem (2°) leafy ; leaves 

 round-cordate, acutely .5 - 7-lobed and toothed, with the sinus closed ; stipules 

 obtuse, fringed ; flowers nodding ; calyx ovoid, yellowish-green, the ovate lobes 

 obtuse; petals spatulate, white, and, like the smooth stamens and styles, includ- 

 ed. — Mountains of North Carolina, and northward. June and July. 



5. H. hispida, Pursh. Hirsute or minutely glandular-pubescent; leaves 

 5-9-lobed, tlie lobes short, rounded, and mucronately toothed; panicle con- 

 tracted ; the short branches few-flowered ; petals broadly spatulate, purple, rather 

 shorter than the more or less exserted stamens ; styles at length much exseited. 



— High mountains of North Carolina. May and June. — Scape 2° - 3° high, 

 sometimes smoothish, as well as the oetioles. Flowers larger than any of the 

 preceding. 



