3090 



SAXIFRAGA 



SAXIFRAGA 



Subsection GEMMIFER^E. 



26. conifera, Coss. & Dur. Densely cespitose, 



in. high, with numerous short, densely imbricate- 

 foliose caudicles: fl.-sts. stiff, ascending, few-lvd., pur- 

 ple below, densely glandular-pubescent above: Ivs., 

 those of the caudicles, subpatent; cauline erect-spread- 

 ing; all of them undivided, sessile, oblong- or lanceolate- 

 linear, cuspidate-aristate, leathery, margin short-cUiate : 

 infl. 3-9-fld., corymbose-racemose or paniculate: fls. 

 white; calyx pubescent-glandular, the lobes ovate- 

 triangular, mucronate; petals not known. June, July. 

 Spain. Rare and seldom cult. 



27. hypnoides, Linn. (S. hibernica, Hort.). Peren- 

 nial, loosely cespitose, l%-8 in. high, with herbaceous 

 loosely foliose caudicles which are frequently reddish 

 tinted: sts. erect, covered with very slender glands: Ivs. 

 light green, those of the caudicles rather thick, sparsely 

 covered with slender hairs, when old rather glabrous, 

 the suborbicular blade is cut all the way to the base, 

 3-lobed, and is borne on a rather broad, flat, 1-nerved, 

 ciliate petiole which is shorter than the blade, lobes of 

 the blade linear-lanceolate, a little dilated at the middle, 

 acute or mucronate, with the lateral lobes divaricate, 

 often 2-lobed; upper Ivs. of the young shoots 3-toothed, 

 attenuate to the long petiole, the uppermost linear- 

 lanceolate; cauline Ivs. few and like the bracts 

 linear-lanceolate, ciliate and acute or mucronate: infl. 

 3-7-fld. panicles: fls. long-pedicelled, white, J^-l in. 

 diam. ; calyx very densely glandulose, the lobes oblong- 

 triangular, mucronulate; petals obovate, 3-nerved, 

 twice longer than calyx-lobes: fr. ovate-globose. May- 

 July. Mountains of Eu. as far north as Great Britain 

 and Ireland. G.C. III. 43 : 302. Frequently confused 

 with S. cespitosa, Linn., and S. decipiens, Ehrh., and 

 the varieties of the 3 species are almost hopelessly 

 confused. Botanically speaking very probably Hooker 

 in his Students' Flora of the British Islands, ed. 3, p. 

 142, is correct in referring S. cespitosa and S. dedpiens 

 as varieties to this species, but horticulturally at least 

 they are better retained as separate species. Var. 

 gemmifera, Hort. (S. Kingii, Hort., also spelled 

 Kingidna), is a close-growing, compact form. Var. 

 purpurea, Hort., is offered in the trade. Var. rdsea, 

 Hort., is offered in the trade. Var. Whitlavii, Hort. (S. 

 Whitlavii, Hort.), is a form with closely packed foliage 

 said to be suitable for edging. A variation of this is 

 offered as S. Whitlavii compdcta. 



28. spathulata, Desf., also spelled spatulata. Peren- 

 nial, very densely cespitose, 2^-4 in. high, with short, 

 prostrate, very densely imbricate-foliose caudicles: sts. 

 slender, erect, few-lvd.: lower Ivs. spatulate, ciliate, 

 apex obtuse, rarely 3-toothed, 3-neryed; cauline linear: 

 infl. 3-5-fld. corymbose panicles with pedicels longer 

 than the fls. and sparsely glandular as is the calyx: fls. 

 white; calyx-lobes ovate, very obtuse; petals obovate- 

 oblong, twice as long as the calyx-lobes: fr. subglobose. 

 June. N. Afr. It is doubtful whether this species is 

 hardy in E. U. S. It forms very thick, close mats which 

 are reddish green or brownish with the silver-gray buds 

 of the shoots dotted through. Not very showy, as the 

 panicles are few-fld. 



29. globulifera, Desf. Cespitose, about 3-4 in. high, 

 with densely foliose, short caudicles: sts. prostrate, 

 nearly glabrous or sparsely pilose, few-lvd.: Ivs. bearing 

 in their axils buds which are shorter than the Ivs. ; Ivs. 

 all nerved and borne on dilated rather flat petioles; the 

 lowest spatulate-cuneate, entire; the others 3-lobed or, 

 if the lateral lobes are bifid, 5-lobed, the midlobe oblong- 

 lanceolate or, if all the lobes are tridentate, with the 

 teeth rather acute; cauline Ivs. oblong-linear, obtuse; 

 bracts linear, obtuse: infl. 3-7-fld., subcorymbose- 

 panicled; pedicels twice or more longer than the fls. : fls. 

 white; calyx short-pilose, the lobes ovate-triangular, 

 obtuse; petals obovate, 3-nerved, more than twice the 



length of the calyx-lobes: fr. subglobose. May, June. 

 S. Spain and N. Afr. 



30. Maweana, Baker. Cespitose, about 6 in. high, 

 with copiously branched, slender purple caudicles 

 which are glandular-pubescent: fl.-sts. erect from a 

 decumbent base: Ivs. 6-8 to a shoot, loosely disposed, 

 cordate-reniform, ternate-palmately-parted, the lobes 

 with 3-5 oblong, subobtuse teeth; the petioles spread- 

 ing, the upper half narrowly winged, often 2-3 times 

 longer than the blade: axillary buds copious and 

 robust: infl. laxly corymbose, 4-9-fld., borne on densely 



Euberulent peduncles: fls. white, large; calyx-lobes 

 gulate-lanceolate t subobtuse, twice as long as the 

 densely puberulent tube ; petals obovate-cuneate. May. 

 Morocco. G.C. 1871:1355. 



Subsection CESPITOSE. 



31. decipiens, Ehrh. (S. csespitbsa, Hort., not Linn.). 

 Cespitose, about 3 in. high, the caudicles herbaceous, 

 rarely subligneous, rather long and leafy: sts. erect, 

 few-lvd., smooth or at first glandular-pilose above: Ivs. 

 obovate-cuneate or spatulate, attenuate to the 1-nerved, 

 flat petiole, apex either 3-pointed or 3-lobed, lateral 

 lobes 2- or 3-lobed or even the midlobe 3-lobed, the 

 lobes oblong acute; cauline Ivs. deeply 3-lobed: infl. 

 loosely panicled, few-fld. (usually 3): fls. white; sepals 

 oblong-lanceolate, subacute; petals obovate, 3-veined. 

 May, June. Eu. L.B.C. 16:1510. Gn. 78, p. 271. 

 Approaches S. cespitosa, Linn., from which it is most 

 easily distinguished by the acute If .-lobes and subacute 

 sepals; also approaches S. hypnoides, from which it is 

 readily told as that species has buds in the axils of the 

 Ivs. of the barren shoots, whereas S. decipiens has not. 

 Very variable; some of the cult, forms are: Var. alba, 

 Hort., which has strong ^growth and white fls. Var. 

 Arkwrightii, Hort. (S. Arkivrightii, Hort.). Rather 

 tall-growing and free-flowering: the buds are suffused 

 with a pale rose tint, but the fls. are pure white, flat, 

 and large, %-l in. across. G.C. III. 45:314. Var. 

 bathoniensis, Hort. (S. bathoniensis, Hort. S. muscoides 

 var. bathoniensis, Hort.). A rapid grower, 10-14 in. 

 high, with stout branching sts. bearing large scarlet- 

 crimson fls. Var. bristoleana, Hort. Fls. bright crim- 

 son. Var. Clibranii, Hort. (S. Clibranii, Hort. S. 

 muscoides var. Clibranii, Hort.). A plant of robust con- 

 stitution, increasing rapidly and flowering freely; the 

 foliage consisting of closely set rosettes of grass-green 

 color: fl.-sts. 5-6 in. high, bearing fls. which are variously 

 described as deep clear rose, rich crimson and rich 

 blackish crimson, J^in. or more diam. G.C. III. 45:301. 

 G. 36:395. Gn. 73, p. 264. J.H. III. 58:431. Var. 

 grandifldra, Hort., is a free-growing plant 6-8 in. high 

 with good-sized fls. of a rich red fading to pink. Very 

 similar to var. bathoniensis. Var. groenlandica, Engl. 

 (S, cespitosa var. groenlandica, Hort.) . Densely cespitose, 

 with few-lvd., few-fld. sts. and broadly cuneate, pal- 

 mately 3-5-divided Ivs.; the lobes ovate-lanceolate, 

 acute. Ireland, Scotland, Wales, Norway, Iceland, 

 Greenland, and Lab. 



Var. hybrida, Hort., is probably a strain of red-fld. 

 hybrids. It is suggested by one author that they are 

 the result of a cross between S. decipiens and S. granu- 

 lata. Some of the trade names of these variants are 

 S. decipiens hybrida grandiflora, Hort. (S. decipiens 

 grandiflora hybrida, Hort. S. hybrida grandiflora, 

 Hort.), with large rich crimson or bright red fls. S. 

 hybrida grandiflora alba, Hort., with neat cushions of 

 dark green foliage and large pure white fls. resembling 

 those of S. Burseriana var. gloria. S. rdsea superba, 

 Hort., which is said to be a remarkably effective variety 

 with rich rose-red fls. G.M. 56:151. S. hybrida 

 splendens, Hort., with rosettes of moss-like foliage 

 covered with medium-sized brilliant red or dark car- 

 mine-red fls. All of these forms are much prized by 

 fanciers abroad. 



