SAXIFRAGACE^l. I. SAXIFRAOA. 



225 



pyr. sax. p. 57. t. 32. Smith, FIG. 46. 



engl. hot. t. 454. S. elongella, 

 platiptala, densa, curvata, densi- 

 folia, Selileich. cat. 1821. Herb 

 densely tufted before flowering, 

 quite glabrous, but afterwards 

 becoming loose, surculose, and 

 villous. Surculi reddish as well 

 as stems, which are erect, shin- 

 ing, brittle, and 2-4-flowered. 

 Surculine leaves furnished with 

 ovate, acute buds in the axils. 

 Cauline leaves few, linear-lan- 

 ceolate, undivided. Peduncles 

 elongated, 1 -flowered, clothed 

 with viscid down as well as the 

 calyxes. Petals white, triple-nerved, rose-coloured on the out- 

 side at the apex ; nerves simple. 



Var. ft, viscosa (D. Don, in Lin. trans. 13. p. 447.) plant 

 softer and looser ; flowers larger. If. . H. Native of the Alps 

 of Scotland. S. viscosa, Hortul. 



Far. y, angustifolia (D. Don, 1. c.) surculi ascending ; leaves 

 longer. If.. H. Native of the Alps of Scotland. S. angusti- 

 folia, Hortul. S. hypnoides S, Aitoni, Haw. enum. sax. p. 

 332. S. Sponhemica, Gmel. fl. bad. 2. p. 224. ? 



Far. S, muscbsa (D. Don, 1. c.) plant one half smaller and 

 slenderer ; segments of leaves smaller ; flowers smaller. If. . H. 

 Native of the Alps of Scotland. 



Far. t, pulchella (D. Don, 1. c.) plant more robust ; surculi 

 thicker and stiffer, and more rigid ; buds obtuse, more crowded ; 

 surculine leaves broader, with a furrow on the upper surface. 

 1. H. Native of the Alps of Scotland. 



Far. , spatulata (Haw. enum. sax. p. 33.) leaves of the sur- 

 culi spatulate, hardly acuminated, somewhat tridentate ; stem 

 few-flowered. If. . H. Native of Switzerland. S. spatulata, 

 Haw. misc. nat. p. 165. Schleich. cat. 1821. but not of Desf. 

 S. crateriformis, hort. oxf. ex Schleich. cat. 1821. S. dubia, 

 Schleich. cat. 1821. 



Hypnum-like Saxifrage. Fl. April, in Britain. PI. \ to -J ft. 



163 S. CONDENSA'TA (Gmel. fl. bad. 2. p. 226. t. 3.) surculi 

 procumbent, short ; radical leaves 5-parted : surculine ones 

 trifid : segments linear, glabrous, awned; calycine segments 

 triangularly ovate, acute, mutic. l/.H. Native of Sponhemia, 

 among rocks, and on the Alps of Scotland ; also of Kotzebue's 

 Sound, if S. ccespilosa, Cham, in litt. be the same. S. densa 

 and S. lae vis, Hortul. S. palmata, Lejeune, fl. spa. 1. p. 194. 

 S. Gmelini, Host. fl. aust. 1. p. 512. S. flavescens, Sternb. rev. 

 sax. suppl. p. 13. t. 9. f. 2.? S. lae'vis, trifida, rupestris, and 

 congesta, Schleich. cat. 1821. Plant quite glabrous, shining, 

 of a beautiful green, densely tufted before flowering, but after- 

 wards loose and surculose. Surculi procumbent, without buds. 

 Stems numerous, nearly naked, glabrous, 2-3-flowered. Pe- 

 duncles glabrous, 1-flowered, curved when the flowers are in 

 the bud. Calyx rather downy. Petals white, triple-nerved, 

 rose-coloured on the outside at the apex ; nerves simple. 



Condensed Saxifrage. Fl. May, Ju. Scotland. PI. ^ foot. 



164 S. ELONGE'LLA (Smith, in Lin. soc. trans. 10. p. 340. 

 engl. bot. 2277. exclusive of the synonyme of Donn, cant.) 

 surculi short, erect; radical leaves 5-cleft or trifid; surculine 

 leaves for the most part tridentate : teeth mucronate ; calycine 

 segments ovate, awnless ; petals obovate. If. H. Native of 

 Scotland, on humid rocks near Lintrathen, in Angusshire. S. 

 hypnoides a, elongella, Ser. in D. C. prod. 4. p. 30. Herb 

 quite glabrous, and densely tufted before flowering, but after- 

 wards becoming loose and rather villous. Stems erect, nearly 

 naked, 2-3-flowered, smoothish. Petioles slender, dilated. Pe- 



VOL. III. 



duncles very long, 1-flowered, beset with glanduliferous hnirs. 

 Petals white, triple-nerved ; lateral nerves curved, branched : 

 middle one simple, straight. 



ZongtsA-stalked Saxifrage. Fl. Apr. May. Scot. PL ^ ft. 



165 S. LEPTOPHY'LLA (Pers. syn. 1. p. 490.) surculi procum- 

 bent, very long, slender ; radical leaves 5-parted : surculine 

 ones 3-parted or undivided : segments linear-lanceolate, very 

 acute, divaricate ; calycine segments oblong-ovate ; petals spa- 

 tulate, quite entire. % . H. Native of the Alps of Switzer- 

 land, and on the mountains of Wales. S. retroflexa, Hortul. 

 Plant quite glabrous, and densely tufted before flowering, but 

 afterwards loose, diffuse, and surculose, and beset with viscid 

 villi. Stems numerous, flexuous, smoothish, shining, many- 

 flowered. Leaves without any buds in the axils. Segments of 

 leaves awned. Flowers drooping, white. Peduncles elongated, 

 and are as well as the calyxes beset with glandular pili. Caly- 

 cine segments ending in a reflexed mucrone each. Petals triple- 

 nerved, with the nerves simple. 



Far. /3, angustifida (D. Don, in Lin. trans. 13. p. 450.) plant 

 slenderer ; segments of leaves narrower. "% . H. Native of 

 Wales, on the mountains. 



Slender-leaved Saxifrage. Fl. May, Ju. Wales. PI. -j ft. 



166 S. UETEVIRENS (D. Don, in Lin. trans. 13. p. 451.) 

 surculi procumbent, elongated ; leaves 5 or 3-parted : segments 

 linear, acute ; calycine segments lanceolate, mucronate ; petals 

 spatulate, emarginate. I/. H. Native of the Alps of Scot- 

 land, on the loftiest rocks, in moist situations, in Angusshire and 

 Aberdeenshire, and on the hills to the north of Loch Lomond. 

 Herb pale green, densely tufted before flowering, and quite 

 glabrous, but afterwards becoming loose, diffuse, and surculose, 

 and beset with long scattered villi. Surculi destitute of buds in 

 the axils of the leaves. Stems erect, few-leaved, usually 3- 

 flowered, rarely 1-flowered. Radical leaves 5-parted : surculine 

 ones 3-parted : lower cauline ones 5-parted : upper caulineones 

 undivided, lanceolate, and acuminated. Flowers campanulate, 

 white, drooping while in the bud. Petals triple-nerved ; nerves 

 simple, green. 



Pale green Saxifrage. Fl. May, June. Scotl. PI. J foot. 



3. Annual or biennial plants, without surculi. Roots 

 fibrous. Petals usually emarginate. 



167 S. ARACHNOIDEA (Sternb. rev. sax. p. 23. t. 15. and in 

 Sturm, deutschl. fl. 35. no. 7. with a figure) stems weak, diffuse, 

 much branched, very pilose ; leaves very thin, somewhat cune- 

 ated, obovate, 3-5-notched ; flowers on long peduncles : pedun- 

 cles divaricate ; lobes of calyx ovate-lanceolate, shorter than the 

 tube, which is rather villous ; petals ovate, entire, hardly ex- 

 ceeding the calyx; styles much shorter than the calyx, parallel. 

 y.. (Sternb.) O- (Ser.) H. Native of Tyrol, in shady rocky 

 places. Moretti, sax. p. 28. Lobaria arachnoidea, Haw. enum. 

 sax. p. 20. Flowers white. 



Cobnebbed Saxifrage. Fl. April, June. Clt. ? PI. A to \ ft. 



168 S. PETR.JE'A (Lin. spec. p. 578.) radical leaves palmately 

 5-lobed : cauline ones tripartite and cut ; peduncles very long, 

 1 -flowered ; calycine segments linear, acute ; petals obovate, 

 truncate at the apex and emarginate, twice the length of the 

 calyx. O- H. Native on Mount Baldo, among broken rocks, 

 and of the Alps of Carinthia ; also of North America, in alpine 

 rivulets on the Rocky Mountains. Wulf. in Jacq. coll. 1. p. 

 200. Jacq. icon. rar. 1. t. 81. S. geranioides, Host, syn. 231. 

 S. rupestris, Willd. spec. 2. p. 653. S. Ponse, Sternb. sax. p. 

 47. t. 18. and t. 11. f. 6. and in Sturm, deutschl. fl. p. 35. fig. 

 16. S. alba petrae'a, Pona, itin. p. 183. S. bianca, Calceol. itin. 

 p. 12. Pluk. aim. p. 331. t. 222. f. 3. Moris, hist. 13. p. 379. 

 sect. 12. t. 9. f. 28. S. petrse'a a, /3, and y, Ser. in D. C. prod. 

 4. p. 34. Tridactylites petraj'a, Haw. enum. sax. p. 22. Plane 



Gg 



