SAXIFRAGA 



SAXIFRAGA 



3089 



Subsection AXILLIFLOILE. 



18. ajugifdlia, Linn., also spelled ajugsefolia. Cespi- 

 tose. about 3-6 in. high: st. decumbent, rooting: Ivs. 

 sparsely glandular-pilose, light green, rather thick and 

 fleshy, orbiculate-digitate, 3-5-parted, attenuate to 

 the flat petiole, lobes lanceolate, acute: infl. 1-5 slender, 

 nearly simple, few-fld. scapes arising from the axils of 

 the lower Ivs.; bracts linear, entire, acute; pedicels 

 very short, puberulent: fls. rather small, whitish or 

 clear milk-white; calyx-lobes ovate, acute; petals ovate- 

 oblong, 3-nerved, very shortly clawed, twice longer than 

 the calyx-lobes. May-July. S. Eu. 



19. perdurans, Kit. Cespitose, 1H~3 in. high: sts. 

 procumbent: Ivs. rather thick, bright green, the lower 

 surface striped purple at the nerves, those of the young 

 shoots and the lower cauline similar, without glands, 

 wedge-shaped, attenuate to the flat petiole, palmately 

 3-5-parted, lobes horizontal spreading, oblong, obtuse, 

 muticous, faintly 3-nerved: infl. a solitary, axillary, sub- 

 simple, few-fld. scape with a reddish base and one 

 partially clasping If.; bracts 3-parted or entire: fls. 1-5, 

 cymose^ white; calyx-lobes roundish; petals spreading, 

 oblong, 3-nerved, more than twice as long as the calyx- 

 lobes. June, July. Mountains of E. Cent. Eu. Closely 

 allied to S. ajugifolia. 



Subsection CZRATOPHYLLUE. 



20. geranioides, Linn. (5. palmata, Hort., not Smith 

 and others). Biennial or perennial, cespitose, 2-10 in. 

 high, with numerous frutescent subwoody, leafy 

 caudicles: sts. erect, somewhat pilose: Ivs. bright green, 

 lower rather pilose, suborbicular or reniform, palmately 

 3-divided with the lateral lobes bifid, lobes lanceolate- 

 acute or 2-3-toothed, base of the ciliate petiole dilate; 

 cauline Ivs. cuneate-ovate with narrow lobes: infl. sub- 

 corymbose, many-fld., with pedicels shorter than the 

 fls.: fls. white, campanulate; calyx-lobes erect, linear- 

 lanceolate, acute; petals obovate-oblong, long-clawed, 

 more than twice longer than the calyx-lobes. May- 

 July. Mountains of Eu. Best prop, by seed. A showy 

 little ground-cover plant suitable for terraces and the 

 like. 



21. pedatifida, Ehrh. (5. cuspiddta, Schleich.). 

 Cespitose, 2-8 in. high, with frutescent, subwoody, 

 leafy caulicles: sts. erect, rather stiff, puberulent: Ivs. 

 fresh green, the lower with ovate and pedate-parted 

 blades, many-nerved and borne on flat petioles which 

 are longer than 



the blades, the 



lateral lobes of 



which are 3-lobed, 



the lobules linear, 



entire and more 



or lessmucronate; 



the Ivs. of the 



young shoots 



longer-petioled 



and with longer, 



narrower lobes; 



the cauline Ivs. 



3-5-lobed; bracts 



narrowly linear: infl. subcorymbose, the peduncles 



much overtopping the Ivs., the pedicels and calyx 



glandular-pilose: fls. 3-9 on a peduncle, campanulate, 



white; calyx-lobes erect, lanceolate, acute; petals 



obovate-oblong, 5-7-nerved, long-clawed, 2 or 3 times 



longer than the calyx-lobes. June. S. Eu. Closely 



allied to S. geranioides but distinguished readily by the 



gradual narrowing of the blades, which are many-nerved 



into the petiole and also by the linear divisions of 



the Ivs. 



22. CampSsii, Boiss. & Reut. (S. Wdttacei, McNab. 

 S. Walloxea.no., Hort.). Fig. 3557. Perennial, loosely 

 cespitose, 3-6 in. high, with slightly shrubby caudicles 



3557. Saxifraga Camposii. 



covered with old retroflex Ivs.: fl.-sts. erect, reddish, 

 entirely glabrous: Ivs. stiff, dark green, shiny, those of 

 the young shoots and the lower ones incise-3-lobed, 

 more than double the length of the strongly broadened, 

 nerved petiole and having decidedly prominent nerves, 

 the lateral lobes of the blade again 2-lobed or dentate 

 with the teeth mucronulate, the midlobe usually entire, 

 linear and mucronate; cauline Ivs. cuneate, attenuate to 

 the petiole, more obtusely dentate; bracts spatulate, 

 acute: infl. terminal, 6-10-fld., more or less congested 

 corymbs or panicles: fls. large, %in. across, subcam- 

 panulate, white; calyx-lobes oblong, acute; petals 

 rounded-obovate, shortly clawed, 3-nerved. May- 

 July. Spain. B.M. 6640. Gn. 35, p. 392; 75, p. 335. 

 A.F. 4:493. G.M. 43:192; 55:276; 57:620. J.H. III. 

 70:250. This species has been intro. into Amer. but 

 never succeeded well owing, it is said, to the hot climate. 

 An attractive little plant on account of its showy fls. 

 which are occasionally used for cut-fls. 



23. canaliculata, Boiss. & Reut. Lax, cespitose. 

 6-8 in. high, with ascending caudicles which are covered 

 below with old, rather remote Ivs., and terminate 

 in rosettes: fl.-sts. numerous, erect, very glabrous: 

 Ivs. very stiff, quite dark green, strongly viscid 

 below, with transversely broader blade which is 

 3-parted and is borne on a flat, deeply grooved petiole, 

 midlobe of the blade entire, the lateral ones 2-3-parted, 

 with the lobes bowed and mucronate at their apex; 

 cauline Ivs. 3-parted; bracts linear, mucronate: infl. 

 corymbose-paniculate: fls. white; calyx-lobes linear- 

 lanceolate, mucronulate; petals obovate-oblong, attenu- 

 ate to the claw, 3-nerved, twice as long as the calyx- 

 lobes. July. Spain. Allied to S. Camposii from which 

 it differs in the more spreading divisions of the Ivs. and 

 the fact that the petioles are not broadened except at 

 the base. 



24. trifurcata, Schrad. Perennial, loosely cespitose, 

 4-8 in. high, with slightly shrubby leafy caudicles 

 covered with old reflexed Ivs.: fl.-sts. erect, glabrous: 

 Ivs. dark gray-green, viscid, twice as long as the petioles, 

 palmately 3-parted, nerved, the lateral lobes of the 

 blade sub-3-divided, the midlobe cuneate, 3-toothed, 

 with the teeth mucronulate; cauline Ivs. few, shorter- 

 petipled, 3-parted; bracts linear, acute: infl. loosely 

 paniculate; pedicels long: fls. milk-white, numerous; 

 calyx glabrous, the lobes lanceolate, acute; petals 

 obovate-oblong, 3-nerved, nearly 3 times the length of 

 the calyx-lobes: fr. ovate. May. Spain. G.C. III. 

 48:295. F.E. 18:442. A quick grower, which is 

 frequently cult, abroad and which is also useful for pot 

 cult. Var. ceratophylla, Hort. (S. ceraiophylla, Dry.). 

 Lvs. rigid and more deeply parted than the type and 

 rather glaucous: fls. white, in lax panicles. June. Spain. 

 B.M. 1651. 



25. pedemontana, All. Sparsely glandular-pubes- 

 cent, cespitose, 2-4 in. high, with densely leafy caudi- 

 cles: Ivs. bright green, those of the young shoots and the 

 lower cauline, cuneate or obversely triangular, attenu- 

 ate to the flat ciliate petiole which equals or is shorter 

 than the 3-lobed blade, lobes horizontally spreading, the 

 lateral ones bifid or all 3 incise-dentate, teeth obtuse or 

 rather acute, obsoletely nerved; lower bracts cuneate, 

 sessile, 5-7-parted or linear-oblong, obtuse: infl. few- 

 Ivd., rather glabrous scapes bearing corymbose pani- 

 cles with slender pedicels which are glandular-pubescent 

 as is the calyx: fls. large, campanulate, milk-white; 

 calyx-lobes linear, obtuse; petals obovate-cuneate, 

 attenuate to a claw, 3-nerved, double the length of the 

 calyx-lobes. July. Mountains of S. Eu. Gn. 78, p. 271. 

 Var. cervicomis, Engl. (S. cervicornis, Viv.). Younger 

 Ivs. longer-petioled, the blade 3-lobed; the lateral lobes 

 bifid, less horizontally spreading, rather acute, the 

 nerves decidedly prominent: the calyx-lobes rather 

 acute. June. Sardinia and Corsica. Gn. 76, p. 19; 79, 

 p. 29. 



