SAXIFRAGA 



SAXIFRAGA 



3093 



basal, sometimes almost 1 ft. long, oblanceolate or 

 oblong-spatulate, attenuate to a short petiole which is 

 half clasping at the base, obtuse, very shortly and also 

 remotely dentate, margin short-ciliate : infl. 4 8-fld. 

 cymes in a large panicle at first clustered, borne on a 

 naked erect scape which is few-striate, shortly pilose, 

 toward the top glandulose-pilose : fls. numerous, small, 

 greenish; calyx-lobes deltoid, spreading, in fr. reflex; 

 petals oblong-linear or linear-lanceolate, 1-nerved, a 

 little longer and narrower than the calyx-lobes. June. 

 July. Swamps and low meadows, Maine to Ont. and 

 Minn., south to Va. and Mo. B.B. 2:173; (ed. 2) 

 2:219. Recommended as a bog-plant. 



43. integrifdlia, Hook. (Micranthes integrifdlia, 

 Small). Whole plant glandular-pilose, viscid, very 

 viscid above. 4-14 in. high: caudex short and somewhat 

 woody, the st. always solitary: basal Ivs. dark green, 

 submembranaceous, ovate-oblong, very obtuse, entire 

 or yen,* slightly sinuate-crenate, base spatulate: infl. 

 paniculate, more or less loosely so or spike-like, borne 

 on an erect naked scape: fls. white, small; calyx rather 

 glabrous, the lobes ovate, obtuse, spreading, at length 

 reflex; petals obovate, slightly emarginate, 1-nerved, a 

 little longer than the calyx-lobes. Calif, northward and 

 in the Rocky Mts. Occasionally offered by dealers in 

 native plants. 



44. nivalis, Linn. Two to 6 in. high: rhizome rather 

 terete, short and simple but thick and hard, crowned 

 with a tuft of Ivs. : Ivs. rather thick and leathery, round- 

 ish-ovate, generally abruptly narrowed to the petioles, 

 obtuse, sharply crenate-serrate, upper surface dark 

 green, under surface purple or red and often pubescent; 

 bracts broad, purple or red: infl. composed of cymules 

 aggregated into one or more terminal conspicuously 

 bracted heads and borne on erect solitary or clustered 

 purple or purple-tinged scapes which are glandular- 

 viscid especially above: fls. white, very short-pedicelled 

 or sessile; sepals ovate or deltoid-ovate, obtuse, ciliate; 

 petals oblong to elliptic, mostly obtuse, narrowed into 

 claw-like bases or scarcely so. June, July. Circum- 

 boreal, including X. Great "Britain. B.B. 2:174; (ed. 2) 

 2:218 (as Micranthes nivalis). 



45. virginiensis, Michx. (Micranthes virginiensis, 

 Small). Low, viscid-pubescent plant, 3-12 in. high 

 (occasionally taller): Ivs. rosulate, thickish, ovate, 

 obovate or spatulate. narrowed into a broad petiole, 

 both surfaces glabrous or the upper short-pilose and 

 the lower hirsute, crenate-toothed : infl. solitary, a small 

 cyme, close at first, becoming loose and paniculate, 

 which is borne on a hirsute and glandular-soft-pilose 

 scape: fls. white, small, few or many; sepals ovate, 

 mostly obtuse; petals obovate-oblong, double the 

 length of the sepals: fr. ovate, the follicles united merely 

 at base, purplish. April-June. Common on rocks and 

 dry hillsides. New Bruns. to Minn., south to Ga., 

 Mo., and Tenn. B.M. 1664. L.B.C. 17:1699. B.B. 

 2:174; (ed. 2) 2:218. A very attractive spring-bloom- 

 ing plant for partially shaded spots in the wild-garden 

 or rockery. Var. flore-pleno, Hort., is a double-fld. 

 form. 



46. punctate, Linn. (S. argiita, Don. S. sestivalis, 

 Fisch. & Mey. Micranthes arguta, Small. M. sestivalis, 

 Small). Six to 18 in. high: rhizome rather stout and 

 woody: Ivs. forming a basal rosette, dark green, reni- 

 fonn to suborbicular, equally and strongly dentate or 

 crenate, with long almost filiform, channeled petioles: 

 infl. a terminal, many-fld., crowded or loose panicle 

 which is borne on the solitary, erect or ascending naked 

 scape: fls. white, not punctate; sepals ovate-oblong, 

 rather acute and reflexed; petals obovate or oblong, 

 twice as long as the sepals. Asia, W. N. Amer., and in 

 the Rocky Mts. A variable species, the American 

 representatives of which have been separated as S. 

 arguta and S. xstivalis, but the differences seem too 

 slight to be considered specific. 



47. Mertensiana, Bongard (Heterisia Mertensiana, 

 Small). Perennial, 4-13 in. high, subpubescent: Ivs. 

 basal, in a rosette, subrotund, base cordate, incise-lobed, 

 the lobes quadrate, 3-toothed with the teeth obtuse or 

 acute; the petioles long, slender, pilose and at the base 

 with a long membranaceous sheath: infl. a loosely dif- 

 fuse panicle with erect-spreading glandular-pubescent 

 branches borne on a slender erect almost naked green 

 scape: fls. white with very long pedicels; sepals ovate, 

 obtuse, reflexed; petals oblong, obtuse, double the 

 length of the sepals. Alaska to Alberta, south to Mont, 

 and Calif . Very similar to S. punctata but readily dis- 

 tinguished by the incise-lobed Ivs. 



Section VIII. DIPTERA. 



A. Lv9. roundish, more or less deeply 7- 

 lobed, serrate: stolons when present 



short 



s.' Longer petals entire 48. cortusifolia 



BB. Longer petals strongly serrate 49. Fortune! 



AA. Lvs. roundish or orate, remotely dentate: 



stolons usually long and slender. 

 B. Margins of Ivs. doubly crenate-den- 

 tate; the petiole twice as long as the 



blade: plant usually tall 50. sarmentosa 



BB. Margin of hs. coarsely dentate or 

 undulate dentate; the petiole as 

 long as or slightly longer than the [formis 



blade: plant low, not over 6 in. high.51. cuscutse- 



48. cortusifolia, Sieb. & Zucc., also spelled cor- 

 tussefolia. From 6-12 in. high, not stoloniferous: Ivs. 

 basal, rather thick and fleshy, bright green, the lower 

 part reddish, strigose-pilose, margin ciliate, roundish, 

 7-lobed, midlobes larger and simple or 3-lobed, acute- 

 serrate, base cordate; petioles 3-4 times as long as the 

 blade and broadened into a sheath ciliate with long 

 rusty brown hairs: infi. laxly paniculate, terminal on an 

 erect, striate, strigose-pilose scape; pedicels long, very 

 slender, erect: fls. white; calyx-lobes lanceolate, acute; 

 petals 3-nerved, unequal, 3 (generally) slightly longer 

 than the calyx-lobes and pbovate-lanceolate, the other 

 2 (sometimes 1-3) 8-10 times longer and quite entire, 

 very long- attenuate to a claw. Oct. Japan. B.M. 

 6680. Var. madida, Maxim. (S. mddida, Makino). 

 Lvs. thin-membranaceous, deeply lobed, with the lobes 

 3-lobulate and incise-dentate. Oct. Japan. G.C. III. 

 46:370. 



49. F6rtunei, Hook. (Bergenia Fdrtunei, Stem). 

 Perennial, scarcely (if at all) sannentose, up to 2 ft. : Ivs. 

 dark green, one-colored, basal, thick, strigose-pilose, 

 rounded-reniform, nerved, somewhat 7-lobed, the lobes 

 rounded, strongly and acutely laciniate-serrate; petioles 

 longer than the blade, thick, sheathing, with the sheaths 

 ciliolate-dentate: infl. loosely paniculate, borne on a 

 stout, erect, strigose-pilose scape; the panicle-branches 

 glandular, spreading, 4-7-fld.; pedicels nodding: fls. 

 white; calyx-lobes ovate, rather obtuse, spreading; 

 petals 1-nerved, unequal, 4 smaller, lanceolate, very 

 entire or subentire, the fifth much longer, 3 or 4 times 

 larger than the others, strongly serrate. June-Oct. 

 Japan. B.M. 5377. G.L. 24:351. Gn. 74, p. 622; 78, 

 p. 564. G.C. III. 45:20. G. 6:445. G.W. 14, p. 398. 

 Gn.W. 24:759. A very showy species which is not 

 entirely hardy in England, requiring winter protection. 

 Var. tricolor, Hort., is a form with the Ivs. irregularly 

 blotched with rose, white, and yellow. F.S. 21:2227, 

 2228. 



50. sarmentosa, Linn. (S. japonica, Hort. S. chinen- 

 sis, Lour.). STRAWBERRY GERANIUM. In England 

 known as MOTHER OF THOUSANDS, a name also applied 

 to Linaria Cymbalaria. OLD MAN'S BEARD. Fig. 3559. 

 Perennial, 9-24 in. high, stoloniferous, the stolons long 

 and filiform: caudex short: Ivs. basal, rather thick, 

 strigose-pilose, reniform-rotundate, rarely rounded- 

 ovate, nerved, doubly crenate-dentate with broad acute 

 teeth, upper surface green veined white, lower surface 



