176 



ROSACEA [Sieversia. 



a SIEVERSIA. WilU 



Cai, tubus concavus, limbo 5-fido, extus 5-bracteolatus. Pet 5. Sta7n. 00. Carpella 

 numerosa caudata in capitulum disposita, stylo recto persistente. Semen adsceiidens. — 

 " Habitus fere, nee omninOi Gei, giwd differt stj^lis geniculatis articulo superiore dissimili 

 scepiusque deciduoP Br* 



1. S. anemonoides ; caule unifloro, stolonibus reptantibus, foliis pinnatis glabris, pinnis 

 ensiformibus apice dentatis, floribus albis, stipulis filiforniibus, petalis calyce longioribus, 

 stylis barbatis. DC. — " Willd* BerL Mag, 5. p. 398." — Geuni anemonoides. Willd, — Pursh^ 

 Fl, Am. V, 1. p. 352. De Cand. Prodr, v. 2. p. 553. — Dryas pentapetala. Linn. Aincen. 

 Acad. V. 2. p. 353. 



Hab. On the Nortli-West coast of America. Merky (ex Pursh.) — With this species I am unaquainted. 

 Though given as a native of Kamtschatka, it is not noticed by Chamisso among the Rosacece of that country 

 described in the Linnaea, nor does it exist in Capt. Beechey's Collection. 



2. S. Rossii ; aristis nudis, foliis radicalibus interrupte pinnatis glabris, pinnis trilobis 

 accessoriis imisque nanis indivisis, caule unifloro subdiphyllo, petalorum venis omnibus dis- 

 tinctis. Br, in Parry's 1st Voy. App, p, cclxxvi. — Geum Rossii. De Cand, Prodr. v, 2. 

 p, 553. 



Hab. Melville Island. Capt Sir Edward Parry. 



3. S. humilis? Br, in Parry's \st Voy. App. p, cclxxvi, in adnot. Cham, in Linnma, v. 

 2. p. 6. 



Had. Island of Unalaschka. Chamisso. — No specific character appears to have been any where given of 

 this plant. But Chamisso says it differs principally from S. Rossiiy to which it is too nearly allied, by its 

 hairiness. 



■ 



4. S. glacialis ; tota villo denso flavicante vestita, foliis pinnatis, pinnis ovato-oblongis 

 summis imisque minimis, mediis majoribus subunidentatis, flore magno unico terminal!, 

 carpellorum aristis villosissimis.— ^r. in Parry's 1st Voy,—Ge\xm glaciale. " Adams^ 

 Act. Mosk. 5. p. 96." De Cand. Prodr. v. 2. p. 553. 



Hab. Shores of the Arctic Sea, west of the Mackenzie River. Capt. Sir J. Franklin, Cape Lisbume 

 in Behring's Straits. Lay and CoUie.~~The leaflets are often cuneate and.S-toothed; all of them beautifully 

 silky with long fulvous hairs. 



5. S.triflora; hirsuta, caule nudiusculo erecto simplice trifloro, foliis radicalibus inter- 

 rupte pinnatis, pinnis cuneatis inciso-dentatis nunc pinnatifidis inferioribus sensim minoribus, 

 petalis (rubicundls) calycem aequantlbus, aristis longissimis sericeo-villosissimis.— ^a in 

 Parry's \st Voy. App. p. cclxxvi. in adnot. Rich, in Frankl. 1st Journ. ed, 2. App. p.2\. 

 Hook, in Bot. Mag. t. 2858.— Geum triflorum. Pursh, Fl. Am. v. 2. p, 736. De Cand. 

 Prodr. V. 2. p. 553. Torrey in PL of Rock, Mount p. 125.— PotentiUa nivalis. Torrey 

 in Ann. of Lye, ofN. H. ofN. York. v. \, p, 32. t 3. / I. 



H.VB. Labrador. Dr. Morrison. Ne^vfoundland. Mr. Cormack. Plains of the Saskatchawan, Atha- 

 basca Lake, and vallies of the Rocky Mountains. Dr. Richardson, Douglas, Drummond.— The numerous 

 specimens of this phint precisely accord with Mr. Bradbury's original ones in my Herbarium, and with others 

 from the White Mountains, in the New England States. 



