246 DIOECIA— OCTANDRIA. Rhodiola. 



to be of material importance, particularly the stigmas. Several 

 exotic species, cultivated in England, require to be better di- 

 stinguished and more correctly named. 



457. RHODIOLA. Rose-root. 



Linn. Gen. 526. Juss.307. Fl. Br. \ 082. Lam.t.S\9. 



Nat. Ord. Succule7iiiC. 'L'mn. 13. Sempervivt^. J uss. 83. 



Barr.Jl. Col. concave, in 4 deep, obtuse, equal, spread- 

 ing permanent segments. Pet. 4, alternate with the 

 calyx, and much longer, lanceolate, bluntish, moderately 

 spreading, deciduous. iVcc/. 4, glandular, notched, oppo- 

 site to the petals, shorter than the calyx. Filam. 8, awl- 

 shaped, equal in length to the petals. Anth. roundish. 

 Rudiment of 4 germens, more or less perfect, with abor- 

 tive stales and stigmas. 



Tert.fl. Cal. as in the bca-r.Jl. P^/. less developed, variable 

 in length. Nect. as in the barr.Jl. Stam. none. Germ. 4, 

 superior, erect, oblong, triangular, each terminating 

 in a short, thick, simple style. Stigm. blunt. Caps. 4, 

 pointed, bursting at the inner margin, of 1 cell. Seeds 

 roundish, numerous, ranged along the inner margin, at 

 each side. 



Root fleshy, perennial. Herb succulent, smooth, glaucous. 

 FL terminal, cymose, occasionally, as it is said, with 

 both organs perfect ; but this is usually in appearance 

 only; and though Mr. Duhl has observed them to be 

 sometimes five- cleft and decandrous, I cannot, for that 

 reason, concur with the learned Schreber, in making 

 the plant a Sedwn. See his Gen. PI. 839. One species 

 only is known. 



1. ^. rosea. Mountain Rose-root. 



R. rosea. Linn.Sp.PUA^b. WilULv.4.807. H. fir. 1082. Engl. 



Bot.v. 8. I. 508. Hook. Scot. 289. Fl. Dan. 1. 183. 

 Sedum n. 953. Hall. Hist. v. 1.411. 



Anacampseros radice rosam spirante major. Raii Syn.269. 

 Rhodia radix. Bauh.Pin.286. Trag.Hist.9l3.f. Ger. Em. 532./. 



Matth. Valgr. v. 2. 372./. Camer. Epit. 769./. Fuchs. Hist. 665./. 



Dalech. Hist. 982./. Cord. Hist 1 37. 2./. 

 Telephium luteum minus, radice rosam redolente. Moris, v. 3. 468. 



sect. \2.t.\0./.8. 

 Rose-root. Petiv. H. Brit. t. 42./ 2. 

 In the fissures of alpine rocks, or maritime cliffs. 



