CJelm. ROSACEiE. 1J5 



obconlatf, lonj^rr tliaii t}ic triaii^iular calyx-pri^nienls ; bractcoles niiniilo ; 

 styles in fruit not twice tlie liiiffth of the liirsutc ealyx, liairy at the l)a.se» 

 —Mkhx. ! Ji. I. J). 300 ; Ell. sk. 1. j>. 57.3. Sieversia radiaia', li. Br. I. <-., 

 not of Hook. 



On the Roan Mountain, N. Carolina, Michaux ! Mr. Curtis! .lulv. 

 — Abundantly distinct from the allied species of the N. W. Coa.st, wiih 

 which Pursh and some succeedinii botanists have confounded it. Ayjparent- 

 ly 1—2 feet high. Leaves hispid on the veins beneath, at length almost gla- 

 brous above. Pubescence of the ])eduncles <^:c. of" hirsute and downy hairs 

 intermixeil. Flowers large. Petals broadlv and deeply obcordate, yellow, 

 with a fulvous sj)ot at the base. Car|)els hirsute, as in the allied s|)ecies, and 

 also the b;ise of the stvle. — Mr. Curtis has rciliscovered this interesting ])l.ant 

 in the same locality where (as appears from his herbarium) Michaux had 

 collected it about 40 years before. 



13. G. collJiiJollum ' {Smhh) : hirsute-pubescent; scajjc sim])le, 1-3- 

 leaved, 1-4-fIowered ; leaves lyrately j)innate ; the lateral leaflets few and 

 minute, or ot'ten none ; terminal leaflet cordate-orbicular, with a deep and 

 narrow sinus, crenately doubly toothed or somewhat incised ; the caulinc 

 leaves small, sessile ; petals obovale, emarginate or slightly obcordate, long- 

 er than the ovate-triangular calyx-segments ; bracteoles small : styles in 

 fruit about twice the length of the hairy calvx, hairy except near the summit. 

 — (t. Canitschaticuni, Pallas! in hrrh. Lamh. S^'c. (t. radiatinn, Pursli ! 



1. c. not of Mich.v. Sieversia rotundifiilia, Cham. ^' Schlecht.! in Linn tea, 



2. p. 4. S. radiata, Hook. ! fl. Bor.-Am. l.j^. 177, not of E. Br. 



a. dilntatum : less hairy ; leaves somewhat reniform, the sinus eitiier open 

 or closed, rather evenly doubly crenate ; the segments of the calyx lanceo- 

 late-ovate, entire. — G. calthitbliuni, Smith ! in Rees, cyclop. ; DC. I. c. 

 Sieversia dilatata, JR. Br. ! I. c. (without a cliaracter.) S. caltliifoUa, Z>. 

 Don ! in herb. Lamh. 



p. rotunclifolium : more hirsute ; leaves nearly orbicular, with the dee]) 

 sinus closed, incisely dentate-crenate ; segments of the calyx often with 2 

 small lateral teeth. — G. rotundifolium, Langsd. ! in DC. I. r. Sie\'ersia 

 rotundifolia, D. Don ! in herb. Lamh. 



y. congestum : dwarf, more hirsute. — Sieversia congesta, A'. Br. ! I. c. 

 (without a character.) 



North "West Coast, Unalaschka, &c., Pallas ! Langsdorff! Mcnzies ! 

 Chamisso ! Mertens ! Mr. JXclson ! Mr. Tolnne ! — Caudex creeping or 

 prostrate. Scapes 3-8 inches high, ascending at I lie base or erect, slender : 

 the cauline leaves clasi)ing. Flowers as large as in G. montanum, yellow. 

 — We have examined, in different herbaria, many specimens apparently 

 wholly intermediate between these three varieties of what we consider a sin- 

 gle species ; and Pallas, Chamisso, and Hooker seem to have adopted ilic 

 same view. 



X Doubtful Species. 



14. G. ciliatum (Pursh) : pubescent ; stem simple; leaves rather glabrous, 

 ciliate, tlie lower ones pinnate, the cauline pinnatifid, the uppermost jialmate ; 

 segments linear, incised ; flowers somewhat corj'inbose. Purah, Jl. 1. 

 p. 352. 



Banks of the Kooskoosk5% Leicis. An elegant sj)ecies ; flowers resembling 

 tliose of G. rivale. Pursli. — We do not find this species in Pursh's ])roper 

 herbarium ; but in his Canadian herbarium, formed subsequently to the pub- 

 lication of his Flora, this name is applied to a specimen of G. triflorum. — In 

 Hooker's Flora, this species is by a typographical mistake introduced undei 

 the name of G. pubescens. 



54 



