152 SAXIFRAGACE^E. (SAXIFRAGE FAMILY.) 



lar, 1-ccllcd, with 3 parietal placentae, many-seeded, loculicidally 3-valved at tlie 

 apex. A very small (' high) 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. ALUM-ROOT. 



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

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

 many-seeded, 2-beakcd, opening between the beaks. Seeds rough or hispid. 

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

 olcd. roundish cordate, lobed or toothed. Stipules adnate to the petioles. Flow- 

 ers cymose-panicled. 



* Calyx equal-sided. 



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

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

 loosely-flowered ; calyx as long as the white spatulate 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 bractcd 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. caulcs- 

 cens, 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 the panicle long, racemose, spreading ; petals purple ' spatulatc- 

 lanceolatc, scarcely longer than the calyx; stamens slightly pubescent. (II. 

 caulescens, /3, Torr. fr Cray) Buncombe County, North Carolina, Curtis. 

 Flowers larger than the last. 



* * Calyx Mt'tjue. 



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

 round-cordate, acutely 5 - 7-lohcd 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, the lobes short, rounded, and mucronately toothed; panicle con- 

 tracted ; the short branches few-flowered ; ]x>tals broadly spatulate, purple, rather 

 shorter than the more or less cxserted 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. 



