372 Ohdeb 61.— SAXIFRAGACE^. 



B. aconitifdlia Nutt. St. raoid-glandular ; Iva, smoothish, deeply 5 to 1-lobed 

 (like tho.se of Aconitum) ;, cyme fastigiate, the fls. seeund. — Mts. S. W. Va. and 

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



7. SULLIVAN'TIA, 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, ungiiiculate, 

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

 stamens 6, inserted with the petals, shorter than the calyx ; capsule 2- 

 beaked, 2-cened ; seeds co, ascending ; testa wing-margined. — 4 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 lvs. roundish, cordate, lobed and toothed, 

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

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



8. HEUXHERA, L. Alum Eoot. (To Prof. Heucher, botanic 

 author, Wittemberg, 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-ceIled, 2-beaked, 

 (lohisoent between the beaks ; seeds many, with a rough, close testa. — 

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



§ FIs. small (1 to 2" long), regular; stam. and sty. much cxserted Nos. 1 — 3 



§ Fla. larger (3 to 5'' long), rather oblique ; staiu. and ety. ehort Nos. 4, B 



1 fe. Americana Willd. Visdd-pubesceni ; lvs. roundish, cordate, somewhat 7- 

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

 gated, loose ; pedicels divaricate ; cal. obtuse, sliort ; pet. spatulate, about as long 

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

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

 4f higli, paniculate, nearly J this length. Fed. 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 lvs. 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 raucli in size. Scape often with one or more lvs. Jn., Jl. 



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

 acutely toothed, ciliate ; panicle loose, slender ; petals white, linear-spaiulaie, 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. 



/3. Quite glabrous ; radical lvs. slightly lobed ; cauline 2, collateral ; branches 

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

 Curtisii Gray.) 



4 H. pubesoens Ph. Scape naked, minutely pubescent above, and with the 

 long petiole glabrous below; lvs. 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., Ta. Scape 1 to 2f high. Lvs. 3 to 5' diam., 

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

 Jn. (H. grandiflora Raf ) 



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

 obtusely 5 to 7-lobed lvs., 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. Riohardsoni R. Br.) 



