Boykinia. SAXIFRAGACE.E. 195 



In the high Sierra Nevada, at 8,000 to 10,000 feet, from Mt. Dana to Sierra Co., Brewer, Bo- 

 lander, Torreij, Leinmon. 



S. LEUCANTHEMIFOLIA, Michx., or an ambiguous form between it and S. stellaris, Linn, (agem- 

 miparous state of which occurs in the Rocky Mountains and northward), is found from Wash- 

 ington Territory to Alaska. It has larger and toothed or incised leaves, narrow and dissimilar 

 petals, evident styles, and is generally a much larger plant. 



* * Leaves rounded and cordate on long naked petioles : filaments broadened up- 

 ivard, spatulate, sometimes almost petaloid : calyx free from the 2-cleft ovary and 

 capsule, soon reflexed : petals obovate or at length oblong, obtuse, on a short claw : 

 scape panic ulately and loosely many-flowered: pedicels filiform. 



7. S. Mertensiana, Bongard. Scape and leaves from a scaly granulate bulb, 

 more or less glandular-pubescent : base of petioles dilated into thin scarious bud- 

 scales : leaves crenately or incisely many-lobed ; the lobes often 3-toothed at the 

 end : panicle effuse ; the branches mostly flowering only at the apex and bearing 

 granulate bulblets down the sides : filaments sometimes 1 2 or more, occasionally 

 sterile and petaloid: capsule inflated-ovate. Veg. Sitcha, 141. S. heterant/ia, 

 Hook. Fl. i. 252, t. 78. S. cestivalis, var. (heterant/ia), Torr. & Gray, Fl. i. 568. 



Wooded banks in the Coast Ranges, from Sonoma Co. northward, extending to Alaska. Well 

 marked by the stout and bulb-like caudex, producing bulblets, and usually by the clusters of 

 little granulate bulblets on the slender branches of the panicle. Leaves 2 to 4 inches in diameter. 

 Petals about 2 lines long. 



8. S. punctata, Linn. Scape and leaves from a short creeping rootstock, 

 glabrous or somewhat pubescent : leaves reniform to round-cordate, of rather firm 

 texture, coarsely and almost equally many-toothed or somewhat incised : petioles 

 hardly dilated except at the insertion : panicle usually narrow, not bulblet-bearing : 

 capsule oblong. S. cestivalis, Fischer, &c. 



Sierra Nevada at 8,000 feet and over (Torrey, Lemmori), and on the mountains eastward to 

 Colorado ; northward to Behring Straits, and in N. Asia. Leaves 1 to 3 inches in diameter. 

 Scape a span to 2 feet high. Petals about 2 lines long. 



4. Leafy stems short, cespitose, and thickly beset with the small evergreen sessile 

 leaves : scape-like peduncle few-fioivered : calyx 5-parted, nearly free. 



9. S. Tolmiei, Torr. & Gray. Forming depressed tufts, glabrous or nearly so : 

 leaves much crowded, spatulate, coriaceous, nerveless, or with obscure midrib, with 

 revolute entire margins (3 to 5 lines long) : peduncles 2 inches long, cymosely 1-6- 

 flowered : petals lanceolate, white, about twice the length of the ovate obtuse 

 spreading calyx-lobes : filaments dilated at the summit : carpels (often 3 or 4) in 

 fruit very obtuse and large, united only at the base. 



High Sierra Nevada, at 9,000 feet and upward (Brewer, Muir, Lemrrum) ; also northward 

 in the Cascade Mountains to Washington Territory. Flowers only 2 lines long : fruit 3 or 4 

 lines long. 



2. BOYKINIA, Nutt. 



Calyx 5-lobd ; the lobes valvate but early open in the bud ; the tube at length 

 globular or ovate, adherent to the ovary. Petals 5, entire (varying from imbricate 

 to convolute in the bud), the base contracted into a short claw, deciduous. Stamens 

 5, short, alternate with the petals : anthers 2-celled. Ovary and capsule 2-celled, 

 dehiscent down the styliferous beaks. Seeds small and very numerous, ovoid, with 

 a close somewhat crustaceous coat, very minutely and evenly papillose. Peren- 

 nial herbs (N. American) ; with creeping rootstocks, leafy simple stems, and panicu- 

 late or corymbose cymes of white flowers ; the leaves all alternate, round-reniform, 

 palmately lobed and incised or toothed, the teeth with callous-glandular tips, and 

 the petiole mostly with stipule-like dilations or appendages at base. 



