372 ORDER 61. SAXIFRAGACE^E. 



B. aconitifolia Nutt. St. viscid-glandular; Ivs. smoothish, deeply 5 to 7-lobed 

 (like those of Aconitum) ; cyme fastigiate, the fls. secund. Mts. S. "VY. Va. and 

 N. Car. (Curtis). St. 1 to 2f high. Fls. small, numerous. JL 



7. SULLIVANTIA, Torr. & Gray. (To Wm. S. Sullivant, the dis- 

 tinguished muscologist.) Calyx campanulate, coherent with the base 

 of the ovary, segments ovate, acute ; petals oval-spatulate, unguiculate, 

 inserted on the summit of the calyx tube, and twice as long as its lobes ; 

 stamens 5, inserted with the petals, shorter than the calyx ; capsule 2- 

 beaked, 2-celled ; seeds GO, ascending ; testa wing-margined. H Lvs. 

 mostly radical, palmate-veined. Fls. in a loose panicle, small, white. 

 S. Ohionis Torr. & Gr. A diffuse, weak-stemmed plant, first discovered in 



Highland Co., Ohio, by him whose name it bears. St. annual, very slender, 8 to 

 16' long, ascending, glandular. Radical Ivs. roundish, cordate, lobed and toothed, 

 1 to 2' diam., on long petioles. Cauline leaves mostly very small, bract-like, 

 cuneate at base, 3 to 5 -toothed at summit. May, Jn. 



8. HEITCHERA, L. ALUM ROOT. (To Prof. Heuchcr, botanic 

 author, AVittemberg, Germany.) Calyx 5-cleft, coherent with the ovary 

 below, segments obtuse ; corolla of 5 small, entire petals, inserted with 

 the 5 stamens on the throat of the calyx ; capsule 1-celled, 2-beaked, 

 dehiscent between the beaks ; seeds many, with a rough, close testa. 

 2{ Lvs. radical, long-petioled, petioles with adnate stipules at base. 



Fls. small (1 to 2" long), regular ; stam. and sty. much exserted Nos. 13 



Fls. larger (3 to 5" long), rather oblique ; stain, and sty. short Nos. 4, 5 



1 H. Americana Willd. Viscid-pubescent; Ivs. roundish, cordate, somewhat 7- 

 lobed, lobes short and roundish, crenate-dentate, teeth mucronate ; panicle elon- 

 gated, loose ; pedicels divaricate ; cal. obtuse, short ; pst. spatulate, about as long 

 as the calyx ; stam. much exserted. A neat plant, rare in the southern parts of 

 N. Eng. and X. Y., frequent at the W. and S. Lvs. 2 to 3J' diam. Scape 2 to 

 4f high, paniculate, nearly this length. Ped. 2 to 3-flowered. Cal. more showy 

 than the purplish-white petals. May, Jn. Root astringent, hence the common 

 name, Alum Root. 



2 H. villosa MX. Villous, with rusty, spreading hairs; radical Ivs. round-cor- 

 date, thin, glabrous above, 7 to 9-lobed, lobes short, crenate-mucronate, ciliate; 

 panicle loose, with filiform branches and pedicels ; fls. very small ; pet. white, 

 about as long and as narrow as the filaments. Mts. Md. to N. Car. and Ky. Scape 

 1 to 3f high. Lvs. 2 to 6' diam., petioles sometimes densely villous. The plant 

 varies much in size. Scape often with one or more Ivs. Jn., Jl. 



3 H. caulscens Ph. Nearly glabrous ; Ivs. acutely 5 to 7-lobed, cordate, lobes 

 acutely toothed, ciliate ; panicle loose, slender ; petals white, linear-spatulate, 2 or 

 3 times longer than the sepals. High Mts. Car., Ky., Tenn. Scape often bearing 

 a leaf or two below, and with the petioles somewhat hairy below. May, Jn. 



ft. Quite glabrous ; radical Ivs. slightly lobed ; cauline 2, collateral ; branches 

 of the panicle racemous, elongated, divaricate. Buncomb Co., N. Car. (H. 

 Curtisii Gray.) 



4 H. p-abescens Ph. Scape naked, minutely pubescent above, and with the 

 long petiole glabrous below; Ivs. glabrous, orbicular-cordate, 7 to 9-lobed, lobes 

 rounded, and with rounded, mucronate, ciliate teeth ; ped. cymous, dichotomous, 

 joints flexuous, almost geniculate ; fls. large ; pet. longer than the included stam. ; 

 sty. exserted. Mts. Penn., Md., Va. Scapa 1 to 2f high. Lvs. 3 to 5' diam., 

 the veins beneath with a few scattered hairs. Ms. 5 to 6" long, purple. May, 

 Jn. (H. grandiflora Raf.) 



5 H. hispida Ph. Hispid and scabrous on the upper surface and margin of the 

 obtusely 5 to 7-lobed Ivs., the lobes broadly mucronate-toothed, teeth very short, 

 almost retuse ; branches of the panicle few-flowered ; pet. spatulate, as long as 

 the calyx, shorter than the somewhat exserted stamens. Mts. of Va. and N". 

 Car., and prairies of Ind. to Mo. The petals purple. The prairie form is less 

 hairy, almost smooth. (H. Richardsoni R. Br.) 



