270 DECANDBIA DIGYNIA 



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but varying to oval and cunoatc-obovatc, ncuto or obtuso, crcnate-deutate, or re- 

 pand-dentate, somewhat fleshy, or subcoriaccous, pubescent, tapering (often ab- 

 ruptly) to a broad nerved petiole half an inch to an inch and half long. Scape 4 

 to 12 inches high, fleshy, terete, nerved, pubescent, corymbosely paniculate at 

 summit; the lower branches from the axils of small leaves, the upper ones bract e- 

 ate at base. Flotrers in rather dense terminal cymose clusters. Calyx-segments 

 lance-ovate, acute, erect, smoothish. Petals white, sometimes tinged with purple, 

 linear-elliptic, often a little inclining to spatulate, obtuse. Stamens about as long 

 as the calyx ; fila?jic7its subulate, smooth ; anthers roundish, frequently purple. 

 Ovary adnate to the calyx at base ; styles short, diverging, persistent. 



Hob. Dry, rocky banks ; woodlands, &c. frequent. Fl. April. J>«Junc. 



2. S. tenxsylvaxica, /,, Leaves radical, oblong-lanccolatc, rather 

 acute, tapering at base, obsoletely denticulate; scape leafless; cyme* 

 in an oblong panicle ; flowers pedicellate ; petal** lance-linear, scarcely 

 twice as long as the calyx ; capsule superior. Beck, Hot. p. 138. 



Pennsylvania?* Saxifrage. Vulgo — Tall Saxifrage. 



Root perennial, with coarse fibres. Leaves 4 to 6 or 8 inches long, and 1 to 2 

 inches wide, sometimes nearly oval, or oblanccolatc, smoothish, rather thin and 

 membranaceous, slightly ciliato on tho margin, tapering gradually to a broad 

 margined ciliate petiole 1 to 2 inches long. Scape 2 to 3 (sometimes 4 or 5) feet 

 high, sulcate-striate, pubescent. Cymes at first in conglomerate heads, finally 

 rather loose, in an oblong open panicle 12 to 16 inches in length; branches and 

 pedicels with lance-linear or subulate bracts at base. Calyx-segments ovate- 

 lanceolate, acute, spreading. Petals greenish yellow, small. Stamens longer than 

 the calyx, persistent; anthers purplish orange-color. Ovary nearly free at base ; 

 styles short. Carpels connate, with the points distinct, acuminate, diverging. 

 Ssctls angular, dark brown. 



llab. Swampy meadows, and low grounds: frequent. FL May. /V.July. 



Obs. The pubescence on the branches and pedicels of both species is minutely 

 glandular at summit. Two or three other species have been found within the V . 

 States ; and Prof. Hooker enumerates 11 species in British America. 



215. CHRYSOSPLENirM. L. JSTtttt. Gen. 369. 

 [Gr. Chrysos, gold, and Xplen, spleen; figurativcl\ >a i^oi'lcn remedy for the spleen] 



Calyx adnate to the ovary, with the limb 4 or 5-cleft ; segments obtuse, 

 often colored. Corolla 0. Stamens often 8. Ovary didymous, im- 

 mersed in a fleshy crenatc-lobcd disk ; styles very short, tapering, di- 

 verging, persistent. Capsule with 2 beaks, 2- valved, 1 -celled. Seeds 

 numerous, globose. 



Herbaceous: subaquatic and prostrate; leaves opposite, or alternate; flowers 

 sessile, terminal anddichotomal, subcorymbose. Nat. Ord. 33. Lindl. Saxifrage. 



1. C. americanum, Schw. Stem procumbent, dichotomously brandl- 

 ing ; leaves generally opposite, roundish-ovate, obscurely crenatc-lobed ; 

 flowers terminal and axillary ; stamens mostly 8. Hook. Am. I. p. 212. 



C. oppositifolium. Jlfx. Am. I. p. 269. J*ursh, Am. 1. p. 269, and 

 all the American Botanists. Not of Linn, {fide Hook.), 



Amebic ax Chbysosplenium. Kw/§*o-Golden Saxifrage. Water carpet. 



Plant smooth, purplish green. Root perennial 1 fibrous. Stem prostrate, 4 to 

 8 or 10 inches long, angular, succulent, with short axillary opposite branches w- 



