3102 



SAXIFRAGA 



SAXIFRAGA 



and apex entire, almost 3-cornered, with 5-7 minute 

 pits noticeable when old near the cartilaginous margin ; 

 cauline Ivs. light green, long-ciliate at the base: infl. 

 racemose 'or spicate-capitate, few-fld., borne on leafy, 

 short, crisply villous fl.-sts.: fls. small, yellow; calyx 

 light green, tube villous, lobes ovate, acute, mucronate, 

 pectinately ciliate; petals oblong-spatul'ate, 3-nerved, 

 slightly longer than the calyx-lobes. May-July. Cau- 

 casus. Little known outside of botanic-garden col- 

 lections. 



Section XIV. PORPHYRION (ANTIPHYLLA). 



A. Lvs. oblong-obovate, their apex flat or 



recurved. 

 B. Infl. 1-fld.: petals obovate-oblong, 



5-nerved 97. oppositifolia 



BB. Infl. 2-9- fid.: petals lanceolate, 3- 



nerved 98. biflora 



AA. Lvs. oblong-lanceolate, recurved from 



their middle 99. retusa 



97. oppositif&lia, Linn. (Antiphylla oppositifolia, 

 Small). Caudicles procumbent and much branched, 

 6-8 in. long, the branches densely cespitose, the flower- 

 ing ones erect, about 6 in. high at most, glabrous and 

 1-fld.: Ivs. opposite, stiff, dark green, gray-tipped, the 

 lower and those of the sterile branches imbricate in 

 4 rows, the upper rather remote, oblong or obovate, 

 apex spreading-recurved, obtuse, thickened, 1-3-pitted, 

 3-cornered-carinate below: fls. showy, violet or lilac, 

 sometimes rose-purple, terminal; calyx-lobes ovate, 

 obtuse; petals obovate-oblong, 5-nerved, 3 times as 

 long as the calyx-lobes. March-June, rarely Aug. 

 Rocks, alpine and boreal parts of Eu., Asia, and N. 

 Amer., south to Gulf of St. Lawrence, mountains of N. 

 Vt., Mont., and Idaho. L.B.C. 9:869. G.C. 111.49:117. 

 Gn. 71, p. 179; 76, p. 603; 78, p. 57. An excellent little 

 rock-plant, making a sedum-like mat, the foliage of a 

 purplish cast. Many variations in cult. Var. alba, 

 Hort., has a compact habit, very dark green Ivs., and 

 starry white fls. Var. coccinea, Hort., has fls. of a 

 richer shade of purple than the type. Var. grandifldra, 

 Hort., is a form with elongated branches larger, obo- 

 vate-rotund petals which are attenuate only at the 

 clawed base and 7-9-nerved: the fls. are large and rosy 



Sirple. Pyrenees. Var. latina, Farrer (S. latina, 

 ayek), is a form with very small compact foliage and 

 good-sized, soft rosy purple fls. whose petals are obo- 

 vate, rather acute, and 5-nerved. Italy. Var. major, 

 Hort., has creeping, rooting sts., tiny rosettes of deep 

 green Ivs., and many fls. of a rich crimson-red. This is 

 considered by some to be identical with var. pyrenaica 

 or very nearly so. Var. pyrenaica, Hort., is a robust 

 very free-growing form, with large crimson fls. A form 

 of this variety with very large rosy lilac fls. and a 

 rather erect habit, said to come from the mountains of 

 Wales, is cult, under the name of S. pyrenaica superba. 

 G.C. II. 21:419. Var. Rudolphiana, Kittel (S. 

 Rudolphiana, Hornsh.), a form with short branches, 

 forming small, very dense tufts: upper Ivs. and calyx- 

 lobes glandular-ciliate: sts. short and more or less erect: 

 fls. terminal and erect; petals obovate, 3-5-nerved. 

 Austrian Alps. Var. speciosa, Fairer, has a stouter 

 and bolder habit and foliage than other forms of the 

 species and has very large pale rose fls. showing very 

 little tendency toward the magenta. Var. splendens, 

 Hort. (S. spiiria var. splendens, Hort.), is a form with 

 large fls. of a very bright purplish crimson or intense 

 rose-purple, which are produced very freely in March. 

 Wales. This will grow well on a north exposure. It is 

 also grown under the name of var. pyrenaica splendens. 



98. bifldra, All. (S. rosea, Lapeyr). Caudicles pros- 

 trate, branched, the branches ascending, pilose above, 

 about 2 in. high: Ivs. opposite, rather remote, thick, 

 fleshy, green or purple, lower obovate-rotund, upper 

 obovate-spatulate, apex rather obtuse, rarely acute, 



1-pitted, sparsely pilose and also ciliate, dorsally sub- 

 carinate: infl. corymbosely paniculate, 2-9-fld.: fls. 

 frequently in pairs, dark violet, deep purplish crimson 

 or blackish blue; calyx broad-ovate, glandular-hirsute, 

 lobes ovate obtuse, ciliate; petals lanceolate, 3-nerved, 

 one-half longer than the calyx-lobes and narrower than 

 them. April- July. Mountains of Eu. Found wild in 

 rocky debris watered by the melting snows. Seldom 

 seen in cult. 



99. retiisa, Gouan. Caudicles prostrate, much 

 branched, the branches densely cespitose, only about 

 1-2 in. high; fls.-sts. erect, 1-4-fld., glandular-hirsute 

 above: Ivs. rather stiff, green with a grayish cast, the 

 lower and those of the sterile branches imbricate in 4 

 rows, spreading or recurved from their middle, oblong- 

 lanceolate, apex flat-triangular and 3-5-pitted, 3- 

 cornered-carinate ; upper Ivs. obovate ciliate at the 

 obtuse, thickened, retuse apex, base hirsute: fls. large, 

 rich ruby- to purple-red; calyx hirsute, the lobes oblong, 

 obtuse; petals lanceolate, twice as long as the calyx- 

 lobes. May- July. High Alps of S. Eu. Gt. 32: 1110. 

 May be grown on a shady ledge in rich, but stony, well- 

 drained soil. Not common in cult. 



Section XV. PELTIPHYLLUM. 



A. Lobes of Ivs. double dentate: fls. pinkish 

 or white; petals ovate or elliptical, ob- 



. tuse 100. peltata 



AA. Lobes of hs. coarsely mucronate-serrate: 

 fls. greenish; petals spatulate, biden- 

 tate 101. tellimoides 



100. peltata, Torr. (Peltiphyllum peltatum, Engl.). 

 UMBRELLA PLANT. Perennial, 1-3 ft. high, rhizome 

 horizontal, fleshy, 2-3 in. thick: Ivs. tufted, basal, 

 long-petioled, the petioles often 1-3 ft. long and rough- 

 glandular, blades large, peltate, almost centrally so, 

 often 1 ft. across, orbicular, many-lobed, rather 

 sharply and unequally toothed: infl. corymbose, borne 

 on simple erect scapes which are longer haired than the 

 petioles and appear before the Ivs. : fls. numerous, pink- 

 isk or white, J^in. diam.; sepals ovate to oval, obtuse, 

 glandular-ciliate; petals ovate to elliptical, obtuse. 

 April. Margins of streams, Calif, and Ore. B.M. 6074. 

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

 6. Gng. 7:307. C.L.A. 17:412. One of the largest of 

 all saxifrages. Hardy in Mass., with slight protection, 

 and a most desirable plant when bold effects are 

 desired. Var. gigantea, Hort., is offered in the trade. 



101. tellimoides, Maxim. Up to 3 ft. or more high: 

 st. robust, erect, leafy: Ivs. radical, long-petioled, the 

 petiole provided with short adnate stipules at its base, 

 blade suborbiculately peltate, 5 in. or more across, 

 7-9-lobed, the lobes ovate and mucrpnate-acute, 

 unequally and coarsely mucronate-serrate: infl. cymose, 

 many-fld.: fls. short-pedicelled, greenish; calyx-lobes 

 triangular-ovate; petals spatulate, bidentate at their 

 apex, twice or more longer than the calyx-lobes. Japan. 

 R.H. 1908, p. 251. Hardy in England and resembles 

 S. peltata. 



Section XVI. HYBRIDS. 



A. BETWEEN SPECIES OF SECTION I. 



102. cordifdlia x purpurascens, Hort. The following 

 named forms are some of the results of reciprocal 

 crosses of these 2 species. They are all robust, although 

 varying much in stature and in color of fl. Athlete, 

 Hort. (Megdsea Athlete, Hort.), said to be a fine variety. 

 Brilliant, Hort. (S. cordifolia var. Brilliant, Hort. 

 Megdsea Brilliant, Hort.). Lvs. large, richly tinted in 

 autumn and winter: fls. purple; calyx and pedicels 

 crimson, compacta, Hort. (Megdsea compdcta, Hort.). 

 Fls. bright rose, corrugata, Hort. (S. cordifolia var. 

 corrugata, Hort. Megdsea corrugata, Hort.). Dwarf 

 habit: Ivs. large and rough: fls. pink. Croesus, Hort. 

 (Megdsea Croesus, Hort.). Very pretty with red fls. 



