1620 



SAXIFRAGA 



SAXIFEAGA 



large, lilac; var. Pyreniica (or superba), fls. very large, 

 rose-purple. S. oppositifolia is evergreen. It makes a 

 good carpet imder other plants. 



9. lingulata, Bell. Radical Ivs. in a rosette, numer- 

 ous, linear-spatulate and somewhat acute, sulcate above, 

 the margin erose-crenulate and somewhat ciliate and 

 crustate with lime; stem-lvs. shorter, the margin carti- 

 laginous and less crustate: scape rising 1-2 ft., erect or 

 flexuose, and bearing a thyrsoid panicle of small white 

 fls. with obovate or oblong -obovate 3-nerved petals. 

 Apennines and Alps. 



Var. Lantoscina, Engler {S. Lantoscdna, Boiss. & 

 Rent.). Lvs. short, more or less attenuate below, but 

 not at the apex, the margin thin. Maritime Alps. G.C. 

 II. 15:109. 



10. Hostii, Tausch. Radical or basal lvs. many, some- 

 what erect, flat above and the apex obtuse, ciliate at the 

 base; stem-lvs. oblong and nearly or quite obtuse, cre- 

 nate-serrate: corymb 5-9-fld., the fls. white or the ob- 

 long petals somewhat purple-spotted. Apennines and 

 Alps. 



11. Cotyledon, Linn. Tufted, the basal lvs. forming 

 attractive silvery rosettes, and sending iip long panicles 

 to a height of 1-2 ft.: basal lvs. lingulate to long-obo- 

 vate, short-apiculate, plane, margin cartilaginous and 

 dentate and bearing many pores; stem-lvs. lingulate- 

 lanceolate : fls. numerous, white, the petals cuneate- 

 obovate and 3-5-nerved and the middle nerve usually 

 bifid, the calyx glandular. Mountains of Eu. Var. 



pyramidalis, DC, is a robust form, 

 with a large, many-tid. panicle. 



12. Aizdon, Jacq. {S. rosuldris, 

 Schleich. ^'. r^e^rt, Lap.). Fig. 2260. 

 Much tufted alpine plant, forming 

 small dense rosettes and sending up 

 a clammy-pubescent, raany-fld. scape 

 5-12 in. high: basal lvs. spatulate, 

 incurved, thick and persistent, the 

 margins white and cartilaginous and 

 porose; stem-lvs. smaller, spatulate 

 or cuneate, serrate towards the apex: 

 fls. small and many, cream color to 

 nearly white, the petals obovate to 

 elliptic and 3-5-nerved, and some- 

 times spotted at the base. Alpine 

 and boreal parts of Europe, Asia and 

 N. Amer., coming as far south, in 

 our eastern country, as northern Vt. 

 and Lake Superior. —Very variable. 



13. granuia,ta, Linn. Meadow 

 Saxifrage. Plant erect and branched 



when in bloom, 6-20 in. tall : 

 radical lvs. reniform, incise- 

 lobed, the lobes entire or cre- 

 nate, pilose, stalked ; stem-lvs. 

 few, nearly sessile, cuneate : 

 white, somewhat bell- 

 shaped, more or less 

 drooping, about 1 in. 

 across, the petals ob- 

 ovate - oblong and 

 much contracted at 

 the base and 3- 

 nerved. Eu., N. Afr., 

 Asia. — This is a com- 

 mon Meadow Saxi- 

 frage of E VI r o p e , 

 blooming ear 1 y in 

 May. It is an attrac- 

 tive plant. A full 

 double form is in 

 cultivation, being 

 prized for planting 

 in moist shady borders. Not hardy at Boston. 



14. rivul&,ris, Linn. Matted little plant, with stems 

 ascending 1-3 in. high: lower lvs. round - reniform, 

 prominently 3-5-lobed, long-stalked; stem-lvs. narrow- 

 ovate to lanceolate, entire: fls. 3-5, white, the petals 

 •ovate. Eu., Asia, N. Amer., in this country occurring as 

 far soutli as tlie White Mts. and Colo. 



15. peltd,ta, Torr. Umbicem.a Plant. Strong plant, 

 sending up large peltate leaf-blades or petioles 1-3 ft. 



2260. Saxifraga Aizoon (X K-). 



long, the many pinkish or white fls. borne on long hairy 

 scapes overtopping the young foliage: rootstock stout, 

 horizontal: lvs. orbicular, much lobed or cut, almost 

 centrally peltate : fls. 3^ in. across, the petals elliptic 

 and obtuse. Margins of streams, Calif. B.M. 6074. F. 

 S. 23:2441. G.C. III. 27:139. Gn. 26, p. 545; 55, p. 6. 

 Gng. 7:307. —One of the largest of all Saxifrages, and 

 the only one with peltate lvs. The If. -blade often meas- 

 ures 1 ft. across, and the rhizome 2-3 in. thick. The 

 fls. appear in advance of the lvs. in early spring. Hardy 

 in Mass., with slight protection, and a most desirable 

 plant when bold effects are desired. 



16. chrysdntha, Gray. Dwarf cespitose plant with 

 creeping shoots and rosulate, imbricated oblong-ovate, 

 glabrous and fleshy lvs.: flowering stems 1-2 in. tall, 

 filiform, glandular-pubescent, 1-3-fld., the oval petals 

 yellow. Mts. of Colo. — Has been offered by dealers in 

 native plants. 



17. rotundiidlia, Linn. Root-lvs. thick, cordate-orbic- 

 ular, dentate-lobed, long-stalked, clustered, but not 

 rosulate; stem-lvs. nearly sessile, often narrower: fl.- 

 stems 1 ft. tall, erect and somewhat branched, hairy: 

 fls. white, the oblong-elliptic petals spotted with purple. 

 Eu. and Asia. B.M. 424.— A very pretty plant for moist 

 places. 



Var. Tayget6a, Engler (S. Taygetea, Boiss. & Heldr.). 

 Basal lvs. very long-stalked, reniform or nearly orbic- 

 ular, 5-9-lobed: fls. only 1-2 on the ends of the branches 

 (several in <S'. rotundifolia itself). Greece. 



18. punctata, Linn. Plant 1 ft. or more high when in 

 flower, more or less pubescent, the scape leafless: lvs. 

 at first pubescent but becoming glabrous, reniform, 

 equally and strongly dentate or crenate: fls. white, not 

 punctate, the petals obovate or oblong ; the sepals 

 acutish. Asia and boreal N. Amer. 



19. Mertensiana, Bong. Very like S. punctata, but 

 the lvs. incise-lobed and the lobes 3-toothed: sepals ob- 

 tuse. Alaska. 



20. brydphora, Gray. Dwarf, the scapes about 3 in. 

 higli and branching: lvs. 1 in. or less long, oblanceolate 

 to narrow-oblong, entire and ciliate, usually rosulate: 

 scape leafless, the branches 1-fld. : petals lance-ovate, 

 white, 2-spotted at the base. Mt. Dana. — Once offered 

 by dealers in native plants. 



21. leucanthemifdlia, Michx. (S. Michauxii. Britt.). 

 Viscid plant 5-20 in. tall, much branched, bearing many 

 small star-like white fls. and long-spatulate toothed lvs.: 

 petals lanceolate, unequal, the 3 larger ones cordate at 

 the base and with a pair of yellow spots. Va. to Ga., 

 in the mountains. 



22. Pennsylvdnica, Linn. Tall stout herb, sometimes 

 3 ft. and more high, viscid pubescent, nearly or quite 

 simple: basal lvs. sometimes nearly 1 ft. long, oblan- 

 ceolate, obscurely toothed, much narrowed below, the 

 scape nearly naked: panicle long and becoming open: 

 fls. numerous and small, greenish, the petals linear- 

 lanceolate. Swamps, eastern U. S., south as far as Va. 

 — Recommended as a bog plant. 



23. nivMis, Linn. Dwarf, the flowering branches ris- 

 ing 3-6 in.: lvs. ovate or obovate, thiekish, crenate, 

 narrowed into a petiole: fls. capitate on a naked scape, 

 the head sometimes branched, white, the oblong or obo- 

 vate petals persistent. Alpine and arctic regions of 

 Eu., Asia and N. Amer. In the Rocky Mts. it occurs 

 as far south as Arizona. 



24. Virgini§nsis, Michx. Low, viscid pubescent plant, 

 1 ft. or less tall, from a rosette of obovate or spatulate, 

 crenate-toothed thiekish lvs., which are narrowed into a 

 petiole : cyme small and close at first but becoming loose 

 and open: fls. small but many, dull white, the petals 

 oblong-obtuse. On rocks and in woods, eastern U. S. 

 as far south as Va. and Tenn.— A pretty spring flower, 

 and sonietinu-s ])hinted. There is a double-fld. form. 



25. integrifdlia. Hook. Plant a foot or less tall, vis- 

 cid pubescent, leafless except at the base, tlie short cau- 

 dex somewhat woody: lvs. ovate and very olituse, entire 

 or very nearly so: fls. white, small, in a more or less 

 loose panicle, the petals obovate and twice the length of 

 the spreading-reflexed calyx-lobes. Calif, northward.— 

 Once offered amongst native plants. 



