444 DECANDRIA. DIGYNIA. saxifra^a, 



1 . S. virginiensis M i c h. : pubescent ; leaves oval, ob- 

 tuse, crenate, narrowed at the base into a petiole ; stem 

 nearly leafless, corymbose-paniculate ; flowers subsessile ; 

 petals oval, with branched nerves ; capsule half inferior. 

 D, Don Monog. Saxif, in Lin. Trans. XIII. p. 336. M icL 

 Fl. I. p. 269. Pursh Fl I. p. 310. Elliott Sk. I. p. 

 511. S. vcmalis Big. Bast. p. 107. S» nivalin Muhl, 

 Cat. p. 45. S. foliis cordato-ovalibus crenatis, &c. G r on. 

 Virg. 160. S. noveboracensis Cold. Noveb. 125. Pluk. 

 Aim, t. 222, f. 5, 



Root perennial, thick. Whole plant minutely pubescent. Stem 

 succulent, very variable in size, early in spring scarcely more 

 than an inch, but later, and in favourable situations, more than 

 a foot high, dichotomously branched above ; the branches 

 bearing small terminal corymbs. Leaves mostly radical, 

 spreading on the ground, an inch or more in length, thick, 

 crenate-dentate, obtuse. Flowers numerous, crowded. Seg- 

 ments of the calyx ovate, acute, erect. Petals white, ob- 

 tuse. Stamens shorter than the calyx ; filaments subulate ; 

 anthers roundish. Styles short, diverging, persistent. Cc/j= 

 sule half inferior. 



Hab. On rocks and dry hills ; common, April — -May. 



Nearly allied to S. nivalis, but that species has acutely cre- 

 nate leaves ; the scape scarcely branched, with the flowers in 

 a dense cluster. Sec. 



2, S, pennsxjlvanica L. : pubescent ; leaves oblong-lan" 

 (Ceolate, acute at each extremity, obsoieteiy denticulate; stem 

 naked; panicle oblong; flowers fasciculate; petals linear, 

 longer than the calyx ; capsule superior. D. D o n 1. c. p. 

 384. Wit Id. Spec. 11, p. 640. Mich. Fl. I. p. 269» 

 P ursh Fl. \. p. 3U. Big. Bast. p. 107. S. foliis lan» 

 «ceolatis denticulatis, &Co Gron. Firg. 49» DHL Elth, 

 ^37. t. 253„ f. 328„ 



Root perennial. Leaves all radical, 5 — 8 inches long, and an 

 inch or moix in breadth, sUghtly pubescent, acute, attenuate at 

 the base j margin irregularly denticulare. Scafie a foot and a 

 half or 2 feet high, pubescent, simple, jpanicle oblong, con- 

 sisting of short alternate branches, bearing small fascicles of 

 flowers, but in fruit more expanded, with the flowers distinct. 

 Calyz: green ; segments lanceolate, acute, spreading^ Petals 

 yellowish-green, obtuse. Stamens longer than the calyx, 

 persistent \ anthers roundish, orange Styles very short, 

 spreading. Cafisule superior. Seeds very numerous, linear- 

 oblong, angular, dark brown, 



£Ub. In wet meadows and bogs. May— June. 



