64 BAXIFRAGACEf. 



SAXIFRAGACEJ;. 



I 1. Herbi with leaveg alternate or all radical (except No. 2 in 7): styles 2 or 3 (sessile 

 stigmas 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 



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



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



PetaU broad, eiltire: ovary 2-celled or carpels distinct 1 



Petals pinnatifld, 3-7 lobed or entire: ovary I-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, 3 



Petals deciduous, often crenate, white: seeds winged 5 



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



entire or wanting, small: ovary I-celled 10 



Petals persistent, entire or 3-lobed, apatnlate, violet: ovary inferior 8 



entire, slender, purple: ovary superior 4 



Stamens 3: petals entire, filiform, recurved persistent 6 



S 2. Shrubs with large white flowera or woody -hated herbs: leaves opposite. 



Shrubs: stamens 20 or more: petals 4 or 6: stigmas distinct 13 



petals 5 to 7: stigmas united 14 



Herbaceous: branches terminated by capitate clusters of small flowers 15 



f 3. Blender shrubs: leaves alternate: flowers mostly in drooping dusters: ovary inferior, 

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



1. SAXIFBAGA, Linnaeus. 



* Stemlest, or rarely a leaf 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 reflezed 8, 9 

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



Calyx-lobes erect or spreading 3, 6 



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



' • Stems leafy, tufted [except No, IS): petioUs short. 



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



Leaves like strawberry leaflets: flowers greenish 11 



liCaves few on the stem: stamens 5 13 



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

 8. S. Parryi, Torr. Calyx nnrl white petals brown or purple-veined. 



