Saxifraga. SAXIFRAGACEjE. 567 



and well market! species, cvulcntly allied to S. diapensioides and S, ra;sia 

 wanting, however, idlogetlier the reinarkahle glaucous incrustation of ihose 

 species and being destitute of pores." Hook. — Flowering stems about 'J inclios 

 high. Flower large, apparently yellow. J'etais nnich longer llinn the 

 calyx, 3-6-nerved, not unguiculate. Filaments subulate filiform. Styles 

 very short. 



§ 5. Caudcx perennial. Leaf If, commonly subterranean : leaves sometimes per- 

 sistent : stem {scape) annual, mostly leafless : calyx nearly free from Uie 

 ovary ; the sepals almost distinct, reflexed : filaments dilated upwards or 

 clavale. — Hydatica, Tausch. 



14. S. TolmfEi : stems prostrate, diffusely brandling ; leaves spatulate, 

 subscssilc, coriaceous, nerveless, the margins (not cartilaginous) revolute ; 

 tliose of the creeping shoots scatterr-d ; those of the short flower-bearin" 

 branches imbricated and partly reflexed; flowering stems (i)eduiicles) nearly 

 naked, somewhat glandular, 1-3-flowered ; calyx deejily ])arte(l, nearly free 

 from tlic ovary ; the segments ovate, obtuse, shorter tlian the unguiculate 

 about 1-ncrved petals; filaments much inflated above; styles almost none. 



North West Coast, Mr. Tolmie ! (The specimen communicated by Sir 

 Wm. Hooker.) — Stems branching and producing many creejjing slioots, ap- 

 parently forming csespitose tufts. Leaves }jersistent, 3-4 lines long, obtuse, 

 obscurely 1-nerved, nearly flat; the margin, especially toward tlie base, 

 fringed ^vith 1-3 long cilite on each side. Flowering stems about 3 iiiclics 

 high. Segments of the calyx 3-nerved. Petals ovate or lanceolate-oblong, 

 1-nerved, with one or two indistinct branches toward the apex, ajiparently 

 white. Filaments short : anthers roundish. Carpels often (by accident) 3 

 or 4. — This apparently very distinct species has the same habit witli S. srr- 

 pyllifolia ; but, in the structure of the flower, it accords with the section Hy- 

 datica, although diftereut in appearance. 



15. iS. spicata (Don) : somewhat pubescent ; leaves radical, on long pe- 

 tioles, orbicular-cordate, coarsely and sharply serrate, the petiole dilated up- 



— — 16. (S. aestivalis (Fischer) : pubescent with soft villous hairs, or nearly 

 ' glabrous; leaves radical, on long petioles, roundish-reniform, or nearly orbi- 

 cular, with a deep closed sinus, membranaceous, equally and deeply dentate 

 with coarse and separate mostly acute and entire teeth, not margined ; scape 

 naked ; the peduncles and pedicels gkuidular ; bracts small, linear ; petals 

 oval, unguiculate, obtuse, thrice the length of the obtuse (ovate or ovate- 

 oblong) reflexed segments of the calyx ; a portion of the filaments often abor- 

 tive or petaloid ; ovaries distinct below the middle. 



a. flowers in a loose panicle ; pedicels slender. — S. aestivalis, Fischer! in 

 herh. DC. S^ Hook., Sf ind. sem. St. Petersb. (1835) p. 37. S. foliis renifor- 

 mibus, &c. Gmel. fl. Sibir. 4. j). 161, t. 65, /. 1. S. punctata, Sternh. 

 Saxifr.p. 18, Sf suppl. p. 7, t. 4 ; Ledeb.! fl. Alt. 2. p. US ; Hook. Sf Am. 

 hot. Beechey, p. 114, <^ 124 ,• Hook. ! fl. Bor.-Am. I. p. 251 ; not of Linn. 

 S. gracilis, Sternh. I. c. suppl. t. 5,/. 1, fide Hook. S. argula, Don, Saxifr. 

 I. c. p. 356.' S. hirsuta 3. punctata, Seringe, in DC prodr. 4. p. 42. 

 S. semidodecandra, Wormskiold, fide Fisch. S. denudata, Nutt. .' mss., 

 not of Don. 



