SAXIFRAGA 



SAXIFRAGA 



1619 



EB. Leaf - margins spread- 

 ing, serrate, sometimes 

 both margins and up- 

 per face crxistate 11. Cotyledon 



12. Aizoon 

 CO. Apex and margin of leaves 

 without pores. 

 D. True stem all subter- 

 ranean. 

 E. Plant propagating b y 

 means of subterranean 

 bulblets produced on 

 the very short -jointed 



caudex 13. granulata 



14. rivularis 

 EE. Plant propagating by 

 non-bulbiferous shoots. 

 F. Foliage peltate, large.l5. peltata ^^ 



FF. Foliage not peltate, 

 usually not large. 



Q. Petals yellow 16. chrysantha 



GG. Petals white (some- 

 times spotted). 

 H. Lower Ivs. orbicu- 

 lar 17. rotundifolia 



18. punctata 



19. Mertensiana 

 HH. Lower Ivs. cu - 



neate, obovate or 



spatulate {ovate 



in No, 25). 

 I. Shape of petals 

 lanceolate- 

 acute, or nar- 

 rower 20. bryophora 



21. leucanthemifolia 



22. Pennsylvanica 

 II. Shape of petals 



obovate or 

 , orbicular 23. nivalis 



24. Virg:lniensis 



25. inte^folia 

 DD. True stem above ground, 



the plant propagating by 

 evident stolons or offsets. 

 E. Petals all equal. 



F. Pistil more or less ad- 

 nate to the calyx-tube 

 at its base. 

 G. Foliage stiff and 

 withering rather 

 than falling, not 

 divided, the mar- 

 gin usually setose.26. azoides 



27. bronchialis 

 GG. Foliage herbaceous, 



undivided or lobed. 28. Camposii 



29. caespitosa 



30. aphylla 

 F. Pistil free from the 



calyx-tube 31. umbrosa 



32. Geum 

 EE. Petals unequal, the two 

 lower ones mxich larger 

 than the others 33. sarmentosa 



1. liguia,ta, Wall. (S. Schmidtii, Regel). Strong- 

 growing plant, with large radical Ivs. 3-8 in. across and 

 orbicular or obovate in outline and cordate at base, the 

 margin scarcely undulate but ciliate: scape becoming 

 about 1 ft. tall, this and the pedicels and calices gla- 

 brous: fls. white to light purple, orbicular and clawed: 

 fr. subglobose, drooping. Himalayan region. B.M. 

 3406, "the sepals too acute and the leaves too undulate," 

 according to Hooker. L.B.C. 8:747. R.H. 1868:271. 

 —Not perfectly hardy at Boston. By error, the name is 

 sometimes written S. lingulata, a name which properly 

 belongs to a very different species (No. 9). Var. riibra, 

 Hort., is a form with red-purple fls. Var. speciosa, Hort., 

 has showy blush or rose-white fls. 



Var. cili^ta, Hook. (S. cilidta, Royle), has Ivs. hir- 

 sute on both sides and the margins strongly ciliate. 

 B.M. 4915. G.C. III. 5:365. 



2. StrAcheyi, Hook.f. «&Thom. (S. unguiculdta, 

 Hort., not Engl.). Fig. 2258. Habit of S. ligulata: 

 Ivs. glabrous on both sides, obovate, usually not at all 

 cordate at base, the margin ciliate and from crenate- 

 serrate to nearly entire : pedicels and calices pubescent. 



2258. Saxifraga Stracheyi (X 34). 

 As the flowers are appearing in earliest spring, 



the scape becoming 1 ft. or more tall : fls. white or rose 

 (sometimes yellow?), the calyx-teeth oblong and often 

 wider above their base: fr. ovate-lanceolate, usually 

 erect. Kashmir, 8,000-14,000 ft. B.M. 5967?. B.R. 29:65 

 (as S. ciliata). G.M. 39:233. J.H. III. 32:281. 



3. Milesii, Leichtl. (S. Strdcheyi, yar. Mllesii, Hort.). 

 From S. Stracheyi it difl'ers in having longer Ivs. 

 (9-12 in. long and 4-5 in. broad), white fls., oblong 

 calyx-lobes, the petals distinctly clawed: corymb dense. 

 Himalaya. 



4. crassifolia, Linn. (S. cuneifblia, Hort., not Linn. 

 S. Sibirica, Hort., not Linn.). Fig. 2259. Strong-grow- 

 ing species with woody rhizome : Ivs. obovate to long- 

 obovate, narrowed at the base, undulate-crenate : scape 

 and inflorescence glabrous: fls. lilac or purplish, nu- 

 merous on the inclined or drooping branches of the 

 elevated panicle (scape 10-16 in. tall). Altai to Mon- 

 golia. B.M. 196. G.M. 34:67. Mn. 10, p. 74. 



5. cordifdiia, Haw. Very like the above and probably 

 only a form of it; differs in having broader, round-ob- 

 long, and more or less cordate Ivs. Altai. Var. pur- 

 ptirea, Hort., has purple fls. 



6. purpur&scens, Hook. f. & Thom. Lvs. broad-obo- 

 vate to short-oblong, the margins entire or slightly 

 undulate, somewhat cordate at base : scape 12 in. or less 

 high, bright purple, hairy: fls. deep purple, nodding, 

 the calyx-lobes very obtuse : fr. elliptic-lanceolate, erect. 

 Sikkim (India), 10,000 to 15,000 ft. altitude. B.M. 5066. 

 —Very handsome because of its purple scape and flowers. 



7. Hueti&na, Boiss. Annual or biennial, but grown 

 from seed as a hardy garden annual and used for edg- 

 ings and borders of small beds: dwarf, about 6 in. high, 

 compact in growth: lvs. reniform and shallowly 5-7- 

 lobed, the lobes obtuse or short-apiculate, long-petioled, 

 bright green in color: fls. small but very numerous, 

 long-stalked in the axils, bright yellow, the petals ovate 

 or oblong: seeds small, tuberculate. Asia Minor.— Very 

 effective little plant. 



8. oppositifdiia, 

 Linn. Stem or cau- 

 dex perennial and 

 leafy, the branches 

 rising 6 in. high and 

 bearing many small 

 persistent thick se- 

 dum-like lvs., and 

 giving a moss -like 

 aspect to the plant; 

 sterile shoots with 

 lvs. imbricated in 

 four series: fls. soli- 

 tary on the ends of the annual leafy shoots, lilac or 

 white, the obovate petals exceeding the stamens. Rocks, 

 alpine and boreal parts of Europe and North America, 

 extending into northern Vermont. L.B.C 9:869.— An 

 excellent little rock plant, making a sedum-like mat, 

 the foliage of a purplish cast. There are several cul- 

 tivated forms, as var. dlba, fls. white; var. m&jor, fls. 



2259. Saxifraga crassifolia. 



