SAXIFRAGES. 187 



1. SAXIFRAGA, Pliny (Saxifrage). Sbort-stemmed or stemless 



plants with simple leaves, tlieii- petioles commonly sheathing at base. 



Flowers in cymose thyrsoid or panicled clusters or solitary. Sepals 



. distinct, or at ba.se conjoined to each other and the base of the ovary. 



Petals entire, imbricate in bud. Stamens 10, inserted with or below the 



petals, on the base of the calyx, or between it and a fleshy disk. Carpels 



2, usually partly united, dehiscent by the inside of the divergent beaks. 



Seeds with thin coat and no wing or appendage. — Herbaceous or more 



enduring plants of rocky woods or alpine heights, margins of cold streams, 



etc. ; very diverse in habit ; perhaps belonging to several natural generfu 



* Herbaceous; scapes slender, paniculate; calyx free from the ovary, 



rejlexed; petals unguiculate; filaments' filiforTn or clavate. 



■^Annual; leaves cmieate at base; filaments filiform. 



1. S. bryophora, Gray, Proc. Am. Acad. vi. 53.3 (1865). Very slender, 

 2 — 8 in. high : leaves not rosulate, but scattered up and down the lower 

 l>art of the stem, 1 in. long, spatulate-oblong, acutish, entire, veinless : 

 panicle lax, the branches bearing lateral pedicellate deflexed leafy plant- 

 lets and a single terminal flower : petals oblong-ovate, 2 lines long 

 including the claw ; blade white with a pair of round yellow spots at 

 base : stamens nearly equalling the petals ; filaments filiform, somewhat 

 flattened toward the base ; anthers red-purple : carpels nearly distinct : 

 styles 0. — Common in the high Sierra from Mt. Whitney to Donner 

 Lake ; the root apparently of but one year's duration, but the propa- 

 gation is by leafy bulblets more than by seeds. Aug. — Oct. 



■i- -^ Perennials; leaves broad not cuneate at base; filaments more 

 or less clavate. 



2. S. Marshalii, Greene, Pittonia, i. 159 (1888). Scape and leaves 

 from a short crown, sparingly glandular-pubescent : leaves 1 in. long or 

 more, on somewhat flattened petioles of 1 — 2 in., oblong, obtuse, the base 

 abruptly acute, or nearly truncate, or subcordate, the margin closely 

 beset with sharp triangular teeth ; scape 8—16 in. high, rather loosely 

 paniculate at summit : petals 1% lines long, oval or oblong, white with 

 a pair of oval green spois near the base, very shortly unguiculate : 

 stamens equalling the jDctals ; filaments strongly clavate. — Hoopa Valley, 

 Hum])oldt Co., C. C. Marshall, April, 1888 ; also obtained a year later, 

 on Rogue River, Oregon, in large form, by Mr. Howell. 



3. S. Merteusiaiia, Bong. Veg. Sitch. 141 (1833): S. heteruntha, 

 Hook. Fl. i. 252. t. 78 (1833). Scape and leaves from a scaly-bulljous 

 base, glandular-pubescent, %, — 1 ft. high : leaves thin and pale, round- 

 cordate, creuately or incisely many-lobed, % — IVg in. broad, on long 

 petioles which are scarious-dilated at base : cymose panicle loose, the 

 branches often flowering at apex and bearing granular bulblets down the 



