Heuchera.] SAXIFRAGEiE- 235 



r 



situations by the sides of streams. Menzies. Lewis, Douglas, Dr. Scouler,~Tlns is perhaps the most highly 

 ornamental of the Genus, heaiiu<^ a profusion of lai-ge racemes of deep rose-coloured flowers. The fruit is 

 broH uish-hlaok, hitter, having a tough, leathery, tliick skin, with numerous minute angular seeds^ adhering 

 together by a small portion of limpid, viscid mucus, and completely destitute of the pulpy substance com- 

 mon to most species of the tribe. Douglas, 



* * * Inermia, Bacemi jyhirijloru Folia in gemmis amhientia. (Flores aureo-jiavi.) 



21. i?. aureum ; inerme, glaberrimum, foliis trilobis, lobis dlvaricatis inciso-paucidentatis 

 petiolo basi ciliato brevioribus, racemis laxis dense multifloris, caljcibns tubiilatis pediccllo 

 longioribus, tubo gracili, ]aciniis oblongis obtusis, petalis linearibus lacinlis calycinis duplo 

 brevioribus, bracteis linearibus longitudine pedicellorunij (stylo integro), baccis glabris. 

 PursJi, FL Am, v. I. p. 164. Bot. Reg, f. 125. De Cand. Prodr. v. B, p. 483. 



Hab. Falls of the Colimihia River. M, Lewis. In light gravelly soils, from the Great Falls of the 

 Columbia to the mountains, and on the southern branches. Douglas. — Fruit yellow, seldom black, and of 

 exijuisite flavour. Douglas, 



22, R, tenuiflorum; inerme, foliis subrotundis trilobis farinosis, lobis apice obtuse 

 dentatis, racemis pendulis multifloris, calycibus tubulatis glabris pedicello longioribus 

 coloratis, petalis integerrimis calj'cis luciniis linearibus obtusis duplo brevioribus, baccis 

 glabris. Lindl, in Hort Trans, v, 7. p. 242. Bot Reg, t 1274. — R. aureum. " Colla, 

 Hort, Rip, App, 3. t I. a. nee aliorum. (LindL) — R. flavum. BerL in De Cand. Prodr, 

 V. 3. p, 483 ?" — R. aureum, var. tubiflorum. Dougl, MSS, apnd Hort. Soc. Lond, 



Hab. Common on the rocky tracts of the Columbia, to the Mountains, near the head-water of the Missouri. 

 Douglas. — " In habit, this species is more erect than It. aureum^ and has the young wood more thinly 

 clothed with leaves : its whole appearance is also paler during the early part of the year. The leaves are 

 nearly round, 3-or j-lobed; M'hen young, covered \^ith a kind of mealy bloom; when more advanced, cordate 

 at the base; and at all times, in the plants that I have examined, wholly destitute of pubescence. The 

 flowers are not more than half the size of those of It. aureum, and have entire, not notched petals. The 

 fruit is the size of the Red Currant, with a thick skin, and a dense mucilaginous pulp, of an agreeable flavour, 

 but possessing little acidity, and far inferior to our cultivated Currants. — There are two varieties, the one 

 bearing black, and the other yellow fruit: the former changes from yellow to red, and finally acquires a deep 

 blackish-purple hue; the latter always retains its yellow colour." LindL—ln the dried state of the speci- 

 mens, I can perceive no essential diflference between this and M. aureum. 



Ord, XLII. saxifrages. Juss, De Cand, 

 (Trib. IV. Saxifragem verce, De Cand.) 



1. HEUCHERA. Linn. 



Calyx persistens 5-fidus sestivatione imbricata. Petala indivisa subinjequalia. Stamina 

 5. Styli 2 longissimi distinct! longitudine staminum, juniores approximato-subconcreti, 

 dein diverf^entes. Capsula flora emarcido coronata, inferne calyci adnata, inter stylos 

 dehiscens, 1-locularis, placentis 2 adnatis polyspermis. Semina aspcro-punctata rugosaye. 

 — Herbge. Folia radicalia petiolata palmatinervia lohato-dentata. Caules aplajlli, Flores 



paniculati aut racemosi. DC, 



2G2 



