574 SAXTFRAGACEtE. Saxifraga. 



segments of the calyx ovate, obtuse, shorter than the petals ; petals 3-nerved 

 towards the middle. Seringe, in DC. inodr. 4. ji. 35. S. Chamissonis, 

 Sternb. inecl. 

 Island of St. Lawrence, Chamisso. 



/-39. 5^. rivularis (Linn.) : small ; stems weak, ascending, 3-5-flowered ; 

 radical leaves somewhat reniform, crenately lobed, with the petioles dilated 

 at the base ; the cauline ones lanceolate, nearly entire ; lobes of the calyx 

 ovate, broad, as long as the tube or at length shorter ; petals ovate, scarcely 

 longer than the calyx ; stigmas depressed-globose ; capsule thick, much 

 exceeding the calyx, crowned with the very short divergent styles. Seringe. 

 — Linn. ! spec. 1. p. 404, &fji. Lapp. t. 2, /. 1 ,• Engl. lot. t. 2275 ,• Pursh! 

 fl. 1. p. 312 ,- Wahl. fl. Lajjp.p. 117 ,- Don, Saxifr. I. c. p. 367 ; Seringe! 

 in DC. prodr. 4. j). 36 ; Hook. ! I. c. 



p. hyperborea (Hook. 1. c.) : stem pubescent, 1-2-flowered. — S.hyperborea, 

 R. Br. ! in Parry'' s Istvoy. supj)l. f. 274 ; DC. I. c. 



Arctic America from Greenland and Labrador! to Kotzebue's Sound! 

 Also in the Rocky Mountains, Drummond ! and on the White Mountains of 

 New Hampshire, Mr. Oakes ! P. Melville Island, CajH. Parry ! — Stems 

 about 2 inches high. Flowers white, bracteate. 



40. )S. Cymbalaria (Linn. ?) : stems numerous, weak, few-flowered, 

 pubescent and glandular above ; leaves reniform, petioled, crenately lobed ; 

 flowers about 3 ; bracts half the length of the pedicels ; sepals oblong ; 

 petals obovate, much longer than the calyx ; styles approximate at the base, 

 diverging at the summit. Seringe, in DC. prodr. A. p. 44. 



Chamisso's Island, and the Island of St. Lawrence, Chamisso, ex Sternb. 

 {Linncea, 6. p. 555.) — This is probably the same with the Siberian plant, of 

 which we have specimens from the Russian botanists ; but it can hardly be 

 the S. Cymbalaria of Don (or of Linnseus ?), a Grecian plant, which is said 

 to have " Flores parvi, aurei, petalis acutis." 



41. S. petreea (Linn.) : annual, glandularly hairy ; leaves fleshy, 3-lobed ; 

 the radical ones cordate, on rather long petioles, with the lobes incised ; 

 cauline ones somewhat cuneiform ; the uppermost entire ; peduncles and 

 calyx hispid with glandular hairs ; segments of the calyx oblong, erect ; 

 petals obovate, retuse. Hook. — Linn. spec. {ed. 2) j^- 578 ; Jacq. ic. rar. 

 1. t. 81 ; Don, Saxifr. I. c. p. 443 ; Hook. ! bot. mag. t. 3026, S^ fl. Bor.- 

 Am. 1. p. 245. S. rupestris, Willd. spec. 2. p. 653. S. Ponas, Sternb. rev. 

 Saxifr. p. 47, t. IS, S^- 1. 11, f. 6. 



Alpine rivulets upon the Rocky Mountains, Drumnwnd ! in Hook. 



§ 9. Caudex above the ground none : stem annual, more or less leafy : calyx 

 campanulate, coherent with the base of the ovary ; the segments spreading : 

 stamens mostly 5. — Isomeria. 



42. >§. Jamesii (Torr.) : glandularly puberulent ; radical leaves on rather 

 long petioles, reniform-cordate, smoothish, obscurely veined, crenately toathed 

 or lobed ; cauline ones very few, the uppermost bract-like, cuneiforna ; 

 raceme compound ; calyx (and pedicels) glandular, purplish ; the tube 

 campanulate, cohering at the base with the ovary ; the segments triangular- 

 ovate, rather acute, about the length of the unguiculate orbicular or spatulate 

 petals ; stamens 10. — Torr..' in ann. lye. New York, 2. p. 204 ; Hook. ! fl. 

 Bor.-Am. 1.^.204, t. 84. 



Dry rocky places on the Rocky Mountains in lat. 41°, Dr. James! and 

 farther north in the same range, Drummond' ! — Rhizoma thick. Stem 2-4 

 inches high, 5-10-flowered ; the branches of the paniculate raceme subtended 



