ORDER 61. SAXIFRAGACEJE. 371 



obovate, yellow, dotted pet. ; caps, ovate, tipped with the diverging styles. Lake 

 shores, Can. and northward. 



5 S. leucanthemifolia MX, Viscid-pubescent ; Ivs. radical, spatulate, cut-den- 

 tate, tapering to a petiole; scape diffusely paniculate, with capillary pedicels; 

 calyx free, reflexed ; pet. unequal. Mts. of Car. and Ga. Scapes 1 to 2f high, 

 bearing numerous small fls. Lvs. cut into several large teeth. Petals white or 

 pink, the three larger spotted with yellow. Jn. Sept. 



6 S. erosa Ph. Viscid-pubescent; Ivs. radical, thin, oblong-lanceolate, acute, 

 with erose teeth ; panicle oblongj loose, with leafy bracts and divaricate branches; 

 cal. free, with reflexed, obtuse sepals as long as the equal, obtuse petals. Mts. 

 Penn. to Car. Scape 12 to 18' high. Fls. scattered, on slender pedicels. Petals 

 small, white, yellow at base. Jn., JL 



7 S. Carey ana Gray. Lvs. t . radical, long-petiokd, thin, glabrous, round-ovate, 

 coarsely crenate-dentate, base truncate or subcordate; scape slender, diffusely 

 cymous-paniculate ; pedicels filiform ; petals lance-oblong, sessile, twice longer than 

 the recurved sepals ; carpels distinct, turgid, free. Mts. N. Car., on wet, shady 

 rocks. A low herb with small, white flowers. 



8 S. aizodn Jacq. Lvs. mostly radical, rosulate, spatulate, obtuse, bordered with white 

 cartilaginous teeth and a marginal row of impressed dots ; fls. corymbous panicu- 

 late ; cal. (and ped. glandular viscid) tube hemispherical, as long as the 5-toothed 

 limb; pet. obovate; sty. divergent, longer than the calyx. Southern shores of 

 Lake Superior, to Nova Scotia and northward, on shady, moist rocks. Sts. 5 to 

 10' high. Fls. white. JL 



9 S. Virginiensis MX. EARLY SAXIFRAGE. Lvs. mostly radical, spatulate-obovate, 

 crenately toothed, pubescent, shorter than the broad petiole ; scape nearly leaf- 

 less, paniculately branched above ; fls. many, cymous ; caL adherent to the base 

 of the ovary; pet. white, oblong, much exceeding the calyx. An early and interest- 

 ing plant, on rocks and dry hills, Can. and U. S. Scape 4 to 12' high, pubescent, 

 annual Lvs. rather fleshy, 9 to 13" by 6 to 12". Fls. in rather dense clusters, 

 white, or tinged with purple, in early spring. Fig. 310. 



10 S. Pennsylvanica L. Lvs. radical, oblong-lanceolate, rather acute, taper- 

 ing at base, denticulate; scape nearly leafless; branches alternate, with close 

 cymes forming a diffuse panicle, fls. pedicellate ; pet. greenish, linear-lanceolate, but 

 little longer than the cal. Larger than the foregoing, common in wet meadows, 

 Me. to Ohio. Lvs. fleshy, pale green, 5 to 8' by 1 to 2', on a broad petiole. 

 Scape 2 to 3f high, gross, hollow, hairy and viscid, branched into a large, oblong 

 panicle of yellowish green fls. of no beauty. May. 



5. ASTIL'BE, Don. (Gr. a, privative ori A/3?/, brightness ; the leaves 

 are not shining.) Polygamous ; calyx adherent to the base of the 

 ovary, obconic, with 4 or 5 erect segments ; petals 4 or 5, spatulate ; 

 stamens 8 or 10, exserted ; ovary 2-celled ; carpels of the fruit separat- 

 ing and dehiscing lengthwise inside ; seeds 1 to 4 in each cell, covered 

 with a loose, membranous testa. "U Coarse and weed-like plants. Lvs. 

 compound, 2 or 3-ternate. Fls. small, yellowish- white, in spicate rac. 

 forming a compound panicle. 



A. decandra Don. St. tall, angular ; Ifts. subcordate, incisely lobed, mucronate- 

 serrato; sterile fls. mostly apetalous; sta. 10. Mts. of S. "W. Va., E. Tenn., K 

 Car. to Ga. Abundant in its localities. St. 4 to 6f high, with very large pani- 

 cles. Its resemblance to Spirea Aruncus is very striking, but its irregularly cleft 

 Ifts. and its twice larger (2'' long), 2-carpeled fr. are positive marks of difference. 

 Jn. Aug. 



6. BOYKIN'IA, Nutt. (Dedicated to Dr. Boykin, of Georgia, a 

 pioneer botanist.) Calyx turbinate adherent, 5-cleft ; petals 5, decidu- 

 ous ; stamens 5 ; ovary 2-celled, 2-beaked ; capsule invested with the 

 permanent, urceolate calyx tube, dehiscent between the beaks. 14 Lvs. 

 alternate, petiolate, palmate. Fls. cymous, white. 



