54 SAXIFRAGACEiE. 



SAXIFRAGACE^. 



§ 1. Herbg with leaves alternate or all radical (except No. 2 iu 7): styles 2 or 3 (sessile 

 stigmas 3 or 4 in 11): .carpels united or rarely distinct, the tips divergent (fiattened- 

 obcordate in 12). 



Stamens apparently many in clusters, only 5 perfect 11 



Stamens 8-10: petals none: flowers minute, axillary, solitary 12 



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



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 



Stamens 5: petioles expanded stipule-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. 2 



Petals deciduous, often crenate, white: seeds winged 5 



pinnatifid or 3-cleft; lobes filiform: ovary globular 9 



entire or wanting, small: ovary 1-celled 10 



Petals persistent, entire or 3-lobed, spatulate, violet: ovary inferior 3 



entire, slender, purple: ovary superior 4 



Stamens 3: petals entire, filiform, recurved persistent » 6 



§ 2. Shrubs with large white Jlowers or woody -baaed kerbs: leaves opposite.- 



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



petals 5 to 7: stigmas united 14 



Herbaceous: branches terminated Ijy capitate clusters of small flowers 15 



§ 3. Slender skruds: leaves alternate: Jlowers mostly in drooping clusters: ovary inferior, 

 globose: calyx-lobes larger than the erect petals, usually petaloid 16 



1. SAXIFRAGA, Linnajus. 



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



Leaves large, peltate, cupped in the center: fltiwers pink , 1 



Leaves an inch or less broail, short petioleil: scape 2 U> 4 iuelies high 2 



Leaves rounded-cordate, longpetioled: 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 3, 5 



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



* * Stems leafy, tufted {except No. 12): petioles short. 



Leaves small, evergreen, entire, crowded. Alpine 10 



Leaves like strawberry leaflets: flowers greenish 11 



Leaves few on the stem: stamens 5 12 



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



2. S. Parryi, Ton. Calyx and white petals brown or purple-veined. 



