54 SAXIFRAGACEiE. 



SAXIFRAGACEiE. 



f 1. Herbs with learea alternate or all radical (except No. 2 in 7): styles 2 or 3 (sessile 

 stigmaa 3 or 4 in 11): carpels united or rarely distinct, the tips divergent (flattened* 

 obcordate in 12). 



Stamens apparently many in clusters, only 5 perfect 11 



Stamenf 8-10: petals none: flowers minute, axillary, solitary 13 



Stamens 10 (rarely more or less in No. 1): flowers in terminal racemose or cymose cliiBters. 



Petals broad, entire : ovary 2-celled or carpels distinct 1 



Petals pinnatifid, 3-7 lobed or entire: ovary 1-celled: racemes simple 7 



Petals entire, very slender: styles slender; carpels unequaL 8 



Stamena 5: petioles expanded stipale-like, or bristly at base. 



Petals deciduous, entire, broad: radical leaves 3-parted No. 2 in 1 



leaves 3-9-lobed or cleft: ovary inferior. 9 



Petals deciduous, often crenate, white: seeds winged 5 



pinnatifid or 3-cleft; lobes filiform: ovary globular 



entire or wanting, small: ovary l-celled 10 



Petals persistent, entire or 3-Iobed, spatulate, violet: ovary inferior. 8 



entire, slender, purple: ovary superior 4 



Stamens 3: petals entire, filiform, recurved persistent 6 



I 2. Shrubs tcith large white /lowers or woody -based herbs: leaves opposite. 



Shrubs: stamens 20 or more: petals 4 or 5: stigmas distinct 13 



petals 5 to 7: stigmas united 14 



Herbaceous: branches terminated by capitate clusters of small flowers. 16 



f 3. Slender shrubs: leaves alternate: flowers mostly in drooping clusters: ovary iit/erior^ 

 globosei calyx'lobes larger than the erect petals, usually petaloid 16 



1. SAXIFBAGA, Linnaeus. 



* Stemless, or rarely a Uaf or two on the scape below. 



Leaves large, peltate, cupped in the center: flowers pink. 1 



Leaves an inch or less broad, short petioled: scape 2 to 4 inches high 2 



Leaves rounded-cordate, long petioled: filaments broadest above: calyx soon reflexed 8, 9 

 Leaves not cordate, contracted at base into a margined petiole or nearly sessile. 



Calyx-lobes erect or spreading 8, 6 



Calyx-lobes reflexed in fruit or sooner 4, 6, 7 



• • Stems leafy, tufted {except No. IS): petioles short. 



Leaves small, evergreen, entire, crowded. Alpine. 10 



Leaves like strawberry leaflets: flowers greenish 11 



Leaves few on the stem : stamens 5 IS 



1. S. peltata, Torr. Scape stout, 1-3 ft. high: carpels distinct. Streams, 

 1. 8. Parryi, Torr. Calyx and white petals brown or purple-veined. 



