3S8 



APPENDIX D. BOTANY. 



mens there are only five petals; and the filaments of the five 

 outermost stamens are only a little dilated, while the anthers are 

 perfect: hut in other specimens, collected hy Colonel Freruont, 

 there are ten petals, of which five inner ones are rather smaller 

 than the others; and so they are described hy Mr. Nuttall. Sir 

 William Hooker thinks that M. Imncaiilis is not distinct from 

 this species; but Dr. Gray states (1. c.) that it differs in its yellow 

 flowers, which open in the sunny hours, while in M. ornata they 

 are white, and open toward sunset. 



M. albicaulis, Dough; Torr. and Gr. 1. c. — Valley of the 

 Salt Lake. 



Erodium cicutarium, L'Herit. — Islands of the Salt Lake. 

 Fl. June. This plant is widely spread over the western part of 

 North America, from the Rocky mountains to the Pacific, and is 

 doubtless indigenous. 



Heuchera rubescexs, Torr. (sp. nov. :) scapo nudo glabro vel 

 scabriusculo ; foliis suborbicularibus breviter 5-'7-lobatis glabrius- 

 culis, lobis crenato-dentatis, dentibus setoso-mucronatis, vel obturis ; 

 panicula oblongo thyrsoiclea sublaxa; staminibus exsertis; petalis 

 linearihus calyce. requali longiorihus. 



Stansbury's Island, Salt Lake. Fl. June 26. Rhizoina thick 

 and somewhat ligneous, clothed with brown vestiges of leaves. 

 Leaves an inch or an inch and a-half in diameter, nearly orbicular, 

 mostly cordate at the base, somewhat coriaceous, either wholly gla- 

 brous or very sparingly strigose-pubescent, moderately 5-7-lobed, 

 and the lobes crenate, or broadly toothed. The teeth usually 

 mucronate and sometimes ciliolate. Petioles 2-4 inches long. 

 Scapes varying from a span to fifteen inches high, entirely naked, 

 except a few remote appressed scales. Panicle rather loose and 

 few (15-20) flowered. Flowers about one-third larger than in 

 H. Americana. Bracts lanceolate and often toothed. Calyx pur- 

 plish-red, campanulate, pubescent ; the segments linear-oblong, 

 obtuse, and nearly equal. Petals narrowly linear, persistent, about 

 as long as the stamens. Styles much exserted. 



This species has the foliage of H. ixirvifolia, the inflorescence of 

 H. hispida, and the calyx of II. Americana. 



Plate V. Heuchera rubescens, of the natural size. Fig. 1, a 

 flower. Fig. 2, the same laid open. Fig. 3, transverse section 

 of a capsule. Fig. 4, a seed. All the figures are magnified. 



