216 DIOECIA— OCTANDRIA. Rhodiola. 



to be of material importancej particularly the sUgnias. Several 

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

 stinguished and more correctly named. 



457. RHODIOLA. Rose-voot. 



Linn. Gen. 526. Juss. 307. Fl. Br. 1082. Lam. t.S]9. 

 Nat. Ord. Succulents. Linn. 13. Sempervivce. Juss. 83. 



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

 ing, permanent segments. Pet. 4, alternate with the 

 calyx, and much longer, lanceolate, bluntish, moderately 

 spreading, deciduous. Nect. 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 genne?is, more or less perfect, with abor- 

 tive stt/les and stigmas. 



Fert.Jl. Cal. as in the harr.Jl. Pet. less developed, variable 

 in length. Ncct. as in the barr.Jl. Stam. none. Geiin. 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. Dahl 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 Sedum. See his Gen. PL 839. One species 

 only is known. 



1. R. rosea. Mountain Rose-root. 



R. rosea. Lift?/. % PZ. 14(55. Willd.v.i.807. Fl.Br. \082. Engl. 



Bot. V. 8. t. 508. Hook. Scot. 289. Fl. Dan. t. 183. 

 Sedum n. 953. Hall. Hist. u. 1 . 4 11 . 



Anacampseros radice rosam spirante major. Raii Syn. 269. 

 Rhodia radix. Bauh.Pin.286. Trag. Hist.9\3.f. Ger. Em. 532./. 



Matth.Falgr.v. 2.372. f. Camer.Epit.7 69. f. Fuchs. Hist. 665./. 



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

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



sect. 12. t.l0./.8. 

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



In the fissures of alpine rocks^ or maritime cliffs. 



