190 Saxifragaceae 



crenately incised and toothed, thin, nearly glabrous above, peti- 

 oles densely villous, the slightly dilated base with brown bristly 

 hairs; peduncles axillary and terminal ; flowers short-pedicelled, 

 secund on the few elongated branches; calyx campanulate, be- 

 coming broadly urceolate in fruit, its lobes entire, acute; petals 

 2-2.5 mm. long, scarcely exceeding the calyx-lobes, spatulate; 

 the claw twice as long as the rounded blade. (Boykinia rotundi- 

 folia Parry.) 



Frequent in canyons in the San Gabriel Mountains, 8500-4500 feet altitude. 

 May-July. 



2. SAXIFRAGA L. Saxifrage. 



Stemless or short-stemmed herbs with alternate or 

 mostly basal Leaves and corymbose, paniculate or rarely 

 solitary small flowers. Calyx 5-lobed or 5-parted, Lts 

 tube free or adnate to the base of the ovary. Petals 5, 

 equal, entire. Stamens 10, inserted with the petals; fila- 

 ments filiform ; anthers 2-celled. Carpels 2 <>r rarely .">. 

 distinct or more or less united into a 2-celled ovary; 

 styles distinct, persistent, at length divergent. Fruit of 2 

 follicles or a 2-lobed or 2-beaked capsule, dehiscent down 

 the beaks or the ventral suture. Seeds smooth. 



1. S. Californica (ireene. Scape 15-45 cm. high ; leaves few, 

 rather thick, reddish veined, sparsely glandular-villous, oval, 

 oblong or elliptic, 25-50 mm. long, coarsely crenate to repand- 

 denticulate; petioles rather broad, 12-25 mm. long; inflores- 

 cence cymose-paniculate ; calyx nearly free from the ovary, its 

 segments reflexed ; petals oblong, 3 times as long as the calyx, 

 white or rose-tinted ; filaments subulate, inserted under the edge 

 of an elevated perigynouB disk. 



Arroyo Seco, McClatchie; near Glendalu. Davidson. 



3. HEUCHERA L. 



Perennial herbs with stout rootstocks, mostly basal 

 Long-petioled rounded usually cordate leaves, and slen- 

 der scapes, [nflorescence in ours paniculate, bracteate, 

 bearing small mostly purple flowers. Calyx campanu- 



