Saxifraga. SAXIFRAGACEiE. 



569 



cle glabrous, compact, corymbose ; petals obovatc, marked with two orango 

 spots, scarcely twice the length of tlie obtuse reflexed calyx-segments ; fila- 

 ments dilated or petaloid, often abortive ; ovary free. — Hook. ft. Bor.-Am. 1. 

 p. 249, /. 85. 



Shores of the Arctic Sea between the Mackenzie and Coppermine Rivers, 

 Richardson. — " Togctlier with the harsh and rigid foliage of S. nivalis, tlic 

 present species has a panicle nir)re resembling that of S. vernalis; but the 

 petals have two orange spots similar to those of S. Icucanthcinifolia, and the 

 free calyx is at all times remarkably reflexed. Hook. 



22. 5. Davurica (Willd.) : very glabrous; leaves ciincate-flabelliform, 

 decurrent into a petiole, dec])ly incisely toothed, entire towanls the base; 

 scapes leafless, loosely panicled, bracteate; bracts linear, entire; petals obo- 

 vate, bipunctate, nearly twice the length of the reflexed calyx-segments; 

 filaments often petaloid. Hook. — Willd. spec. 2. p. G45; Don, Sarifr. 

 I. c.p. 388; Stcrnh. rev. SaxlJ'r. suppl. t. 5,/. 2; Hook. Jl. Bor.-Am. I. p. 

 250. S. punctata (Davurica, an punctata?) Pall. it. 3. appx. no. 91, t. 

 P. f. 2. 



Behring's Straits, &c. Menzies, Chamisso, Capt. Beechey. Alpine rivu- 

 lets of the Rocky Mountains, between lat. 52° & 5G°, lyrummond ! — This 

 and the preceding belong to the section Hydatica, rather than to Micranlhes. 

 The lamina of the leaf is sometimes shorter (as in the figure of Pallas), but 

 often longer than the petiole, and in our specimen the ovaries are 3 or even 

 4 in number. 



23. S. Jlobellifolia {R. Jirownl mss.) : " ovaries 3-6, superior ; leaves di- 

 lated-cuneiform, longer than the petiole, serrate-incised beyond the middle; 

 scape naked, or with a single leaf nearly similar to the radical ones; flowers 

 corj'mbose. 



" Unalaschka, Mr. D. Nelson, [v. sp. in herb. Banks.] — Radical leaves 

 numerous, often rather broader than long, nearly glabrous. Scape scarcely 

 a span high, pubescent, somewhat woolly at the apex; the corymb scarcely 

 divided. Stamens 10. Petals oblong, with short claws, exceeding the gla- 

 brous calyx." R. Br. — The description has been obligingly communicated 

 by Mr. Brown. We are uncertain respecting its proper station in the genus, 

 but suspect it is nearly allied to the preceding species, in which we observe 

 3-4 ovaries. 



24. S. Wolleana : leaves all radical, membranaceous (veiny) oblong, ta- 

 pering at the base into a short winged petiole, sinuate-toothed, ciliate ; scape 

 striate, viscous-pubescent above; branches of the panicle rather loosely- 

 flowered, from the axils of leaflike bracts ; pedicels slender ; sepals nearly 

 distinct, glabrous, ovate, obtuse, 3-nerved, reflexed, free from the ovary, 

 about the length of the oval obtuse petals; styles none. 



On a mountain near Bethlehem, Pennsylvania, Mr. Wolle! (in wet 

 places?) — Root fibrous. Leaves 8 inches or more in length, thin and mem- 

 branaceous, mostly obtuse, coarsely toothed ; the teeth near the apex repand, 

 the others somewhat sinuate. Scape rather slender, 12-18 inches high: the 

 lower branches of the panicle from the axils of obovate foliaceous bracts. 

 Petals (small) white with a yellowish spot near the base, slightly uiiguicu- 

 late, obtuse at each end, with a central nerve, from near the middle of which 

 two indistinct lateral ones arise. Filaments shorter than the petals, usually 

 much dilated upwards, acute at the apex: anthers roundish, yellow. Stig- 

 mas minute, sessile. — This plant cannot be the S. erosa of Pursh (which is 

 doubtless nearly allied to S. Pennsylvanica), nor probably of Don, and 

 certainly not of Seringe. It has somewhat the habit of S. Pennsylvanica ; 

 but the flowers are those of the present section. 



72 



