ORDER Gl. SAXIFRAGACEJG. 371 



obuvate, yellow, dotted pet. ; caps, ovate, tipped with tho 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, tho threo larger spotted with yellow. Jn. Sept. 



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

 with erase teeth; paniclo oblong, loose, with leafy bracts and divaricate branches; 

 caL free, with reflexed, obtuse sepals as long as the equal, o'>tuse petals. Mts. 

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

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



7 S. Careyiua Gray. Lvs. radical, long-pet iol;d, thin, glabrous, round-ovate, 

 coarsely crenate-dentatp, base truncate or sulcordate; scape slender, diffusely 

 cymous-paniculatj; pedicels filiform; petal? hneo-obbng, sessile, twite longer than 

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

 rocks. A low herb with small, white flowers. 



Q S. aizodn Jacq. Lvs. mostly radical, rosulatc, spatulate, obtuse, bordered with white 

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

 late; caL (andped. glandular viscid) t'ibe hemispherical, as long as the 5-toothed 

 lim'j; pet. obovate; sty. divergent, longer thun t'.io calyx. Southern shores of 

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

 10' high. Fls. white. Jl. 



9 S. Virginiensia MX. EAKLY SAXIFRAGE. Lvs. mostly radical, spatulate-obovat?, 

 crenately toothed, pubescent, shorter than tho broad petiole ; scapo nearly leaf- 

 less, paniculately branched above; fls. many, cymous ; cal. adherent to the baso 

 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 1 2' high, pubescent, 

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

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



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

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

 cymes forming a di/u,se panicle, fls. pedicellate; pet. greenish, linear-lanceolate, but 

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

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

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

 paniclo of yellowish green fla. of no beauty. May. 



5. ASTIL'BE, Don. (Gr. a, privative oriA/Br], 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, cxserted ; ovary 2-cellcd ; carpels of the fruit separat- 

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

 with a loose, membranous testa. If 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. 1 0. Mts. of S. W. Va., K. Tenn , N. 

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

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

 Ids. 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.) Calvx turbinatc adherent, 5-clcft ; petals 5, decidu- 

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

 permanent, urceolatc calyx tube, dehiscent between the beaks. U Lvs, 

 alternate, pctiolate, palmate. Fls. cymous, white. 



