152 SAXIFRAGACEJE. (SAXIFRAGE FAMILY.) 



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

 apex. A very small (' high) tufted annual herb, with alternate spatulate 

 leaves, and solitary terminal white flowers. 



1. L. spatkulatum, 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- 

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

 el's 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 bracted or somewhat leafy, and, like the 

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

 leaves sharply 5 - 7-lobed 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 ? spatulate- 

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

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

 Flowers larger than the last. 



* * Calyx oldique. 



4. H. pubescens, Purlh. Glandular-puberulent; stem (2) leafy ; leaves 

 round-cordate, acutely 5 - 7-lobed and toothed, with the sinus clqsed ; 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 ; petals broadly spatulate, purple, rather 

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



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

 sometimes smoothish, as well as the t>etioles. Flowers larger than any of the 

 preceding. 



