Saxifraga. SAXIFRAGACEiE. 573 



§ 8. CaudcT above the ground none : stem annual, Irafy : bracts at the base 

 of the pedicels often geminate : calyx free, or adherent to the base of the 

 ovary : the sepals erect or spreading : filaments subulate. — Nephrophyl- 

 lum, Gaud. ; Koch. 



, 34. S. cernua (Linn.): nearly £jlal)roiis, not cliitinnus; stem wr.-ik, siiii])le 

 or branchinii ; lower leaves renil'orni, broadly t(K)tlied or loheil ; llie uj)per 

 ones bearinjf little bulbs in tbeir axils; flowers often solitary, terminal, pen- 

 dulous; sepals oblong-lanceolate, nearly distinct ; petals obovate-oblonc, or 

 obovate and retuse, longer tban ibe calyx; styles iniperfect, deformed. 

 Seringe. — Linn.! spec. 1. p. 403, S^' Jl. Lajrp. t. 2, /. 4 ; Engl. bot. I. (JG4 ; 

 Wahl.ji. Lapp. 21. 116 ; Don, Saxifr. I. c. p. 3G4 ; Seringe .' in DC. prodr. 

 A. p. 2ij ; R. Br.! in Parry's 1st toy. suppl. ji- 275 ; Hook! Jl. Bor.-Am. 1. 

 p. 245, cV bot. Becchcy, p. 124. (excl. (i.) 



Islands and shores of the Arctic Sea! from Greenland to Behring's Straits; 

 and on the Kocky Mountains, {Drunimond). — Flowers white. 



35. S. Sibirica (Linn.) : stem filiform, ascending, weak ; radical leaves 

 reniform, palmately 7-lobed, petiolate, a little hairy, the lobes ovate ; those 

 of the stern sessile ; peduncles elongated, naked ; segments of the calyx 

 linear-ovate, striate, glabrous ; petals cuneiform-obovate ; styles shorter than 

 the ovary. Seringe. — Linn. spec. {ed. 2) p. 577 ; Sternb. rev. Saxifr. t. 25; 

 Don, Saxifr. I. c. p. 365 ; Seringe, in DC. I. c. S. cernua fi. mulliflora, 

 Hook. S^' Am. ! bot. Beechey, p. 124, ex Am. mss. 



Labrador & Newfoundland, Pursh. Kotzebue's Sound, Capt. Beechey ! 

 — Flowers white. 



36. S. elcgans (Nutt. ! mss.) : " annual, glabrous ; stem erect, with 

 numerous slender branches, leafy ; leaves (small) ovate or oval, 2-3-toothed ; 

 the lowermost roundish, on short petioles ; the upper ones acute at the base, 

 .tjcarcely pctioled; flowers paniculate, numerous; the peduncles slender, 

 divaricate, naked ; tube of the calyx about the length of the lanceolate-ovate 

 segments, coherent with the base of tlie ovary ; petals oblong (white with 

 delicate red veins), sessile, more than twice the length of the calyx-segments ; 

 styles shorter than tlie ovary ; seeds striate with scabrous ridges. 



" On moist rocks by springs, on the banks of the Oregon below and near 

 the Wahlamet, abundant. June-July. — A very elegant and distinct species, 

 the stem about a span high, often branching nearly from the base, with 

 numerous [rather small] flowers; the pedicels often nearly an inch long." 

 Nuttall. — The leaves are only 3-4 lines in length ; and tube of the calyx is 

 in flower almost free from the ovaries, but is adherent when the fruit 

 ripens. 



37. S. exilis (Stephan) : caespitose ; rootlets capillary ; radical leaves 

 palmately 5-lobed, peiioled ; cauline ones linear, entire ; petals obovate- 

 oblong, much longer than the 5-cleft calyx. Seringe. — Stephan, in Sternb. 

 rev. Saxifr. suppl. p. 8, t. 3, /. 1 ; DC. I. c. ; Chamisso, in Linntea, 6. 

 p. 556. 



Island of St. LawTence, Behring's Straits, &c. Chamisso. Kotzebue's 

 Sound, Fischer (in DC.)— Stem weak, 1-2-flowered. Petals w^hite. Seringe. 

 — Hooker asks if this may not be a state of S. cernua. 



38. S. Laurentiana (Seringe): stems numerous, from one root; radical 

 leaves on long petioles, reniform, crenately 5-7-lobed, reiiculately veiiied, 

 glabrous ; flowering stems and peduncles clothed with long intricate hairs ; 

 flowers few, somewhat capitate ; bracts somewhat involucrate, 3-5-lobed ; 



