/ 



4 



242 SAXIFRAGES. [Saxifnti/a. 



Rich, in FrankL 1st Journ. ed. 2. App, p. 13. Hooh in Parry* s 2d Toy, App, p. 395. 

 De Cand, Prodr. v, 4. p. 48. 



Hab. In the woody, and principally the barren country of British North America, (Dr. RicJiardson,) 

 to the extreme Arctic Islands. Captain Sir E. Parry. On the Rocky Mountains. Drummond. — This 

 ^ species seems to be unknown to the Botanists of the United States. 



2. €. oppositifolium ; caulibiis floriferis erectis, foliis oppositis reniformi-subcuneatis 

 crenatis, floribiis coiymbosis. — Linn. Sp, PL p, 569. Engl. Bot. t 490. — /5, Scoideri ; 



foliis profunde crenato-serratis. 



Hab. /3. Columbia River, on the North -West coast. Dr. Scmile?; — The leaves of this are exactly similar 

 to those of C Nepalense of Don's Prodr., as well as of Wallich's Cat. n. 48, and I should have referred it to that 

 species, only that the flowers are more distinctly corymbose. 



3. C Americanum; caulibus gracilibus decumbentibus laxis superne dichotomis, foliis 

 oppositis cordato-rotundatis obscure crenato-lobatis floribus axillaribus distantibus. — 

 Sckweinitz, MSS> in Herb, nostr, — C. oppositifolium. Mich. Am, v, I, p, 269. Pursh^ FL 

 Am, V. \,p, 269. Elliott, Carol, v, !./>. 311. Bif/el, Fl, Bost, ed, 2, p, 154. Torrey, FL of 

 Un, St, V, \, p, 445. (non Linn,) 



Hab. Canada. Pursh. Lady Dalhousie, Mr, W. Sheppard, Lake Huron. Dr. Todd. Saskatchawan, 

 (which seems to be its northern limits,) Dr. jRichardson. Drurnmond. — This is assuredly a distinct species 

 from the Europsean C. oppositifolimn, with ivhich it has longf been confounded. Pursh alone, of any 

 author that I have been able to considt, suggesting that if it were compared in a living state with the true 

 C oppositifolium, it would probably prove different. It is a much more inconspicuous plant, of a slender 

 procumbent habit, the upper leafy and flowering branches never forming corymbs, but lengthened out, and 

 bearing distant small leaves, and solitary floAvers in their axils. It retains all its characters when cultivated 

 in the Glasgow Botanic Garden. Dr. Schweinitz has sent me the present species, marked C. Americanum : 

 but I am not awai*e that it is any where published under that name. 



I have followed Jussieu and De Candolle in referring Adoxa, which usually stands next to Chrysosplen- 

 ium in the SaxifragecB, to Araiiacece. 



6. SAXIFRAGA. * Linn. 



Calyx 5-sepalus, sepalis plus minus inter se et ssepe cum ovario coalitis. Petala 5 rariter 

 irregularia, breviter unguiculat a Integra. Stamina 10, 5 sepalis, 5 petalis opposita; anthercs 

 biloculares. Capsula calyci adnata vel libera; carpella 2 s£epe usque ad stylum coalita, 

 Semina numerosa, rugosa vel Isevia, in plurimis seriebus disposita. Spermodermium ultra 

 nucleuni ovoideum non productum. — Herba; perennes vel annuce, scepissime valde polymor- 

 phm in eadem specie, Flores scspius paniculati vel corymhosi, ahortu solitarii, DC, 



Sect. I. Porphyrion. Tausch, — Scringe, in De Cand. Prodr, 

 1 . S. oppositifolia ; viridi-purpurascens, foliis raniorum sterilium quadrifariam imbrica- 

 tis rariter remotis obovatis carinatis ciliatis apice oblique truncatis et l-S-porosis, floribus 



• In the determining of the species of this diiEcult genus, as well as in the drawings and in the descripti 

 I have been kindly aided by my valued friend, Dr. Greville. 



ive matter, 



