Arctic America! from Greenland to Kotzebue’s Sound. 0. Arctic Islands.—
Flowers white, rather large.
10. S. exarata (Yillars): ctespitose ; leaves 3-5-cleft, the uppermost linear
and entire, glandularly pubescent; segments linear, rather acute; flowering
stems slender, with a few scattered leaves, 3-5-flowered; flowers
(small, white) in corymbose racemes; tube of the calyx adherent to the
ovary; petals obovate, 3-nerved, scarcely twice the length of the calyx.
Hook.— Fill. Dauph. 3. p. 674, t. 4 ; Don, l. c .; Seringe ! in DC. prodr,
l. c. S. nervosa, Lapeyr. Saxifr. t. 39. S. pubescens, Sternb. in Linncea,
6. p. 556 ?
Rocky Mountains between lat. 52° & 56°, Drummond !
11. S. sileniflora (Sternb.): stems- caespitose, sometimes producing short
stolons; leaves in dense rosulate tufts, rigid, shining as if varnished, many-
nerved, puberulent, 3-7-cleft; the segments linear, rather acute; flowering
stems elongated, glandularly puberulent, paniculate at the summit, 2-3-
flowered ; flowers rather large (white) ; tube of the calyx glandularly pu-
herulent, adherent to the ovary; the segments much shorter than the obovate
3-nerved petals.—Sternb. ! in Linneea, 6. p. 567; Cham. ! 1. c .; Hook.! Jl.
Bor-Am. 1. p. 245. S. hypnoides 0. condensata (in part) Seringe ?
0. uniflora (Hook.! 1. c .) : stems elongated, 1-flowered.—S. csespitosa 0.
uniflora, Hook. Sp A m .! bot. Beechey, p. 123.
y. minor (Presl! mss.): stems very short, 2-3-flowered.'
tTnalaschka and Bay of Eschscholtz, Chamisso! Behring’s Straits, Menzies.
0. Kotzebue’s Sound! y . TTnalaschka, Heenke!—Flowering stems strict,
about 5 inches high, nearly naked, or with a few very small leaves; the
uppermost simple, the lower ones 3-4-cleft. Seeds oblong, faintly striate,
the striae minutely papillose.
§ 4. Caudex perennial, leafy: leaves persistent, the margins cartilaginous
and with a line of impressed dots: flowering stems annual, the leaves alternate:
sepals coherent at the base, adherent to the base of the ovary: filaments
subulate.—Aizoonia, Tausch,
12. S. Aizoon (Jacq.): peduncles and calyx viscid with glandular hairs ;
leaves rosulate, spatulate, obtuse, with white cartilaginous teeth; flowers
corymbose-paniculate; segments of the calyx broad, as long as the hemispherical
tube; petals obovate, contiguous, usually spotted with red or yellow
at the base ; styles divergent, longer than the calyx; seeds ovate-triquetrous,
rugose-punctate. Seringe.— Jacq. ft. Austr. 5. t. 438 ; Pursh,fl. 1. p. 310;
Sternb. rev. Saxifr. t. 3 ; Don, l. c .; Seringe ! in DC. 1. c .; Hook. ! fl.
Bor.-Am. 1. p. 243. Chondrosea Aizoon, Haw.
Greenland, Labrador! & Nova Scotia to the Saskatchawan, Richardson!
Sfc. Also on shady moist rocks, southern shore of Lake Superior, Dr.
Pitcher ! July.—Stems 5-10 inches high. Cauline leaves few and short,
obovate. Flowers white. 13 *
13. S. serpyllifolia (Pursh): shoots creeping; leaves rosulate, imbricated,
somewhat reflexed, oblong, obtuse, coriaceous, very smooth, attenuated into
a petiole ; stem filiform, few-leaved, glandularly pubescent, one-flowered ;
calyx not adherent to the ovary, the segments obtuse; petals broadly obovate,
about 3-nerved. Hook.—Pursh! fl. 1. p. 310 ; Don! Saxifr. 1. c. p. 405 ;
DC. 1. c .; Hook. fl. Bor.-Am. 1. p. 243. S. Fischeri, Seringe! in DC.
prodr. 4. p. 22. S. planifolia, Sternb. in Linncea, 6. p. 555, ex Cham.
N. W. Coast, at Cape Newnham, Nelson! and Behring’s Straits, Menzies.
Unalasqhka and Island of St. Lawrence, Chamisso!—“ A singular
and well marked species, evidently allied to S. diapensioides and S. cæsia,
wanting, however, altogether the remarkable glaucous incrustation of these
species and being destitute of pores.” Hook— Flowering stems about 2 inches
high. Flower large, apparently yellow. Petals much longer than the
calyx, 3-6-nerved, not unguiculate. Filaments subulate filiform. Styles
very short.
§ 5. Caudex perennial, leafy, commonly subterranean : leaves sometimes persistent
: stem {scape) annual, mostly leafless : calyx nearly free from the
ovary ; the sepals almost distinct, reflexed : filaments dilated upwards or
clavate.—Hydatica, Tausch.
14. .S'. Tolmcei : stems prostrate, diffusely branching ; leaves spatulate,
suhsessile, coriaceous, nerveless, the margins (not cartilaginous) revolute ;
those of the creeping shoots scattered ; those of the short flower-bearing
branches imbricated and partly reflexed ; flowering stems (peduncles) nearly
naked, somewhat glandular, 1-3-flowered ; calyx deeply parted, nearly free
from the ovary ; the segments ovate, obtuse, shorter than the unguiculate
about 1-nerved petals ; filaments much inflated above ; styles almost none.
North West Coast, AZr. Tolmie ! (The specimen communicated by Sir
Wm. Hooker.)—Stems branching and producing many creeping shoots, apparently
forming cæspitose tufts. Leaves persistent, 3-4 lines long, obtuse,
obscurely 1-nerved, nearly flat; the margin, especially toward the base,'
fringed with 1-3 long ciliæ on each side. Flowering stems about 3 inches
high. Segments of the calyx 3-nerved. Petals ovate or lanceolate-oblong
1-nerved, with one or two indistinct branches toward the apex, apparently
white. Filaments short : anthers roundish. Carpels often (by accident) 3
or 4.—This apparently very distinct species has the same habit with S. serpyllifolia
; hut, in the structure of the flower, it accords with the section Hy datica,
although different in appearance. J
15. S. spicata (Don) : somewhat pubescent ; leaves radical, on long petioles,
ortncular-cordate, coarsely and sharply serrate, the petiole dilated upwards
; scape naked ; raceme spicate, elongated, somewhat compound ;
ovaries free ; calyx reflexed. Hook.—Don ! Saxifr. 1. c. p. 354 ; Seringe, l. c ;
Hook. fl. Bor.-Am. 1. p. 251. S. Geum, Pursh! 1. c., not of Linn. '
Sledge Island, N. w . Coast, Mr. Nelson. Behring’s Straits, Menzies
(v. sp. in herb. Banks.)
16. S. eestivalis (Fischer) : pubescent with soft villous hairs, or nearly
glabrous ; leaves radical, on long petioles, roundish-reniform, or nearly orbicular,
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 glandular ; 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 abortive
or petaloid ; ovaries distinct below the middle.
a, flowers in a loose panicle ; pedicels slender.—S. æstivalis, Fischer! in
herb. DC. Sf Hook., tsç ind. sem. St. Petersb. (1835) p. 37. S. foliis renifor-
mibus, &c. Gmel. fl. Sibir. 4. p. 161, t. 65, ƒ. 1. S. punctata, Sternb.
Saxifr. p. 18, <$• suppl. p. 7, t. 4 ; Ledeb. ! fl. Alt. 2. p. 118 ; Hook. &• Am .
6ot. Beechey, p. 114, Sf 124 ; Hook. ! fl. Bor.-Am. 1. p. 251 ; not of Linn.
S. gracilis, Sternb. 1. c. suppl. t. 5, ft 1, fide Hook. S. arguta, Don, Saxifr.
h c. p. 356? S. hirsuta 0. punctata, Seringe, in DC. prodr. 4. ». 42!
k- semidodeeandra, Wormskiold, fide Fisch. S. denudata, Nutt, 'm s s
not of Don.