2. Sedum L. Stonecrop. Orpine 



Smooth and fleshy-leaved perennials or occasionally annuals with mostly alter- 

 nate (sometimes opposite or whorled) or imbricated simple leaves and flowers in 

 broad to one-sided terminal or axillary cymes; sepals and petals 4 or 5, the 

 usually narrow petals free or scarcely united at base; stamens 8 to 10, mostly 

 perigynous; follicles several- to many-seeded, each subtended by a basal scale. 



About 600 species, mainly in temperate and boreal regions of the Northern 

 Hemisphere. 

 1. Distribution in eastern Oklahoma and Texas 1. S. pulchellum. 



1. Distribution in mountains of New Mexico and Arizona (2) 



2(1). Inflorescence a terminal congested essentially naked cyme; petals 3-4 mm. 

 long, obtuse to acute 2. 5. Rosea. 



2. Inflorescence a racemose panicle with leafy bracts; petals 7-10 mm. long, 



acuminate 3. S. rhodanthum. 



1. Sedum pulcheUum Michx. 



Glabrous annual (or biennial ?), ascending or trailing, branched, 1-3 dm. 

 long; leaves crowded, terete, linear, sessile, obtuse, slightly auriculate at the base, 

 7-25 mm. long, about 2 mm. wide; cyme 4- to 7-forked, its branches spreading 

 or recurved in flower; flowers sessile, close together, 8-12 mm. broad; petals 

 light-pink, linear-lanceolate, acute, about twice the length of the lanceolate 

 obtusish sepals; follicles 4-6 mm. long, tipped with slender styles. 



In seepage on and about calcareous and granitic rocks in Okla. (Johnston Co.) 

 and e. Tex. (San Augustine Co.), Mar. -May; from w. Va., w. to s. 111., Mo. and 

 Kan., s. to Ga., Ala., Ark. and Tex. 



2. Sedum Rosea (L.) Scop. Roseroot. Fig. 482. 



Fleshy perennial from a short scaly suckering rootstock that is fragrant when 

 bruised; stems several, erect or ascending, 1-5 dm. tall; leaves pale, equally dis- 

 tributed up the stems, rather crowded, flat, rather thin, sessile, obovate to 

 oblanceolate, 1.5-4.5 cm. long, to 1 cm. wide, acute, entire to dentate above 

 the middle; inflorescence a terminal more or less congested cyme to 6 cm. across; 

 flowers perfect or unisexual, 4- or 5-merous; calyx lobes lanceolate, 1.5-2 mm. 

 long; petals dark-purple, 3-4 mm. long, oblong, obtuse to acute, somewhat spread- 

 ing; stamens 10, equaling or exceeding petals; follicles plump, erect, dark-purple, 

 3-5 mm. long, tipped with a divergent or recurved beak. 



Seepage along streams, bordering lakes and in moist rocky places in N. M. 

 (Taos Co.), May-Aug.; Me. to B. C, s. to mts. of N. C, Tenn., N. M. and 

 Calif.; Euras. 



3. Sedum rhodanthum Gray. Fig. 482. 



Plants glabrous; stems several from a thick rootstock, simple, 1-3.5 dm. tall; 

 leaves sessile, alternate, linear-oblong to oblanceolate, 1.5-3 cm. long, entire 

 or toothed; flowers in dense terminal racemose panicles with leaflike bracts; sepals 

 distinct; petals 7-10 mm. long, light-rose to pink or whitish, linear-lanceolate, 

 acuminate, about twice as long as sepals; stamens 10, these opposite the petals and 

 adnate to them; carpels 5, erect. 



Wet meadows, marshes, about lakes and along streams in N.M. (Taos Co.) and 

 Ariz. (Apache and Coconino cos.), June-Sept.; Mont, to Ut., s. to N.M. and Ariz. 



997 



