192 SAXIFRAGACE.E. saxiekaga. 



Var. laxa Engler 1. c. Leaves ovate, the whole margin dentate : panicle 

 10-12-flowered; pedicels long and slender. With the type. 



8. aestivalis Fisch. Ind. Sem. Petr ii, 37. S. punctata of American 

 authors not L. Glabrous or somewhat pubescent : caudex short, slightly- 

 creeping: leaves reniform to round-cordate, on long slender petioles, 

 coarsely and almost equally many-toothed or somewhat incised, 1-2 inches 

 in diameter : stems erect, 6-18 inche3 high, bearing many flowers in a 

 loose open panicle ; pedicels long and slender; calyx cleft to near the 

 base; sepals narrowly oblong, acute, soon reflexed: petals oblong, obtuse, 

 rather abruptly narrowed below to a short claw ; filaments dilated toward 

 the top: capsule oblong, cleft to near the middle, the short beaks abruptly 

 diverging. Along high mountain streams, Alaska to California and the 

 Rocky Mountains. 



* * Leaves and stems from the summit of a fleshy or bulb-like 

 caudex. 



S. Mertensiaiia Bong. Veg Sitch. 141. S. heterantha Hook. Sparingly 

 pubescent : caudex bulb-like propagating by bulblets in the axils of the 

 leaves; leaves round-cordate, 10-12-lobed, the lobes 2-5-toothed, 1-3 inches 

 in diameter, on petioles severel times longer than the bl de: stems erect, 

 6-12 inches high, often bearing bulblets in the axils of the much branched, 

 many-flowered, open panicle; flowers white, on slender pedicels: petals 

 ovate, attenuate below to a short claw, spreading, white w T ith two yellow- 

 spots near the base, 2 lines long, longer than the lanceolate reflexed calyx- 

 lobes : filaments dilated upward; ovary free from the calyx: capsule 

 inflated-ovate, united only at base, the beaks widely divergent in fruit. 

 ' >n wet rocks and cliffs, Alaska to California, west of the Cascade 

 Mountains. 



S. Marshalii Greene Pitt, i, 159 £curffy-pubescent : caudex fleshy, 

 propagating by oblong tubers at the ends of long filiform runnners : leaves 

 oval or oblong to ovate, abruptly contracted at base to a broad petiole, 

 obtuse, rather coarsely dentate, 6-20 lines long: stems 6-12 inches high : 

 panicle loose, many-flowered, not bulblet-bearing; flowers on slender 

 pedicels; calyx free from the ovary, cleft to the base, the lanceolate ob- 

 tusish segments soon reflexed: petals oblong-oval, white with two yellow 

 spots near the base; filaments dilated about the middle, becoming lanceo- 

 late on long claws ; capsule short, united only at base, the beaks diverg- 

 ing at right angles in fruit. On wet banks, southern Oregon, on the 

 Rogue river, to Humbol.it Co., California. 



S. Californica Greene 1. c. 286. White-pubescent or glandular-tomen- 

 tose : caudex fleshy, propagating by small oblong tubers at the ends of fili- 

 form underground runners: leaves ovate to oblong or elliptical, [-2 inches 

 long, narrowed below to a broad petiole, the margin from coarsely crenate to 

 repandly denticulate or almost entire, more or less cihate: stems 6-18 

 inches high, few-many-flowered; flowers white, on slender pedicels; calyx 

 nearly free from the ovary, divided almost to the base, with oblong rather 

 acute soon reflexed segments ; petals white not spotted, elliptical to spatu- 

 late, obtuse ; filaments flattened but not dilated upward; carpels united only 

 at the base, strongly diverging in fruit. On open hillsides, southern Ore- 

 gon to California. 



S. fragosa Suksdorf, Pmall Bull. Torr. Club xxiii, 363. Perennial by 

 an ascending or horizontal rootstock that increases by branching at the 

 crown, glandular-pilose with rigid hairs: stems erect or assurgent. 12-18 

 inches high : leaves ovate or oblong-ovate, entire or repand 1-2 inches 

 long, abruptly narrowed or truncate at base, decurrent on the winged 

 petiole which is slightly dilated at base, somewhat coriaceous, glabrate: 

 stems 12-18 inches high, erect or assurgent, paniculately blanched at the 

 top: flowers white, on slender pedicels, in many-flowered cymules, calyx 



