SAXIFRAGE. E. 193 



5. T. scabrella, Greene, Pittonia, ii. 162 (1891). Slender, closely 

 glandular-scabrous, 1 ft. high : leaves small ; lowest round-reuiform and 

 3 — 5-lobed, or 3-cleft or -parted, in age bearing each a rather large purple 

 bulblet in the axil ; cauline 3 or 4, alternate, deeply 3-cleft or -parted : 

 pedicels nearly or quite equalling or even exceeding the calyx ; this 

 with a rounded and obtuse base : petals entire ; the 2 upper oblong, 

 obtuse, shorter and broader than the others, all with exserted slender 

 claws : capsule very short, included ; styles manifest, glabrous : seeds 

 murieulate. — In dry ravines among the pine forests of the higher moun- 

 tains of Kern Co. ; also at the Marysville Buttes, Jepson. Equally related 

 to T. cyinbalana and heieruphyUa. June. 



6. T. heterophylla, H. & A. Bot. Beech. 346 (1840) ; T. & G. Fl. i. 

 584, under Lilhopluagma. Slender, 1 ft. high, scabrous-hirsute : lowest 

 leaves :'^4 — 1 in. broad, with 5 shallow rounded lobes : cauline more 

 deeply 3-lobed or -parted : pedicels very short, the broad truncate-based 

 calyx appearing almost sessile : petals (at least the lower 3) obtusely 3- 

 lobed : styles glabrous : seeds murieulate.— Common in the Coast Kange. 



7. T. Bolanderi, Boland. Catal. 11 (1870) ; Gray, Proc. Am. Acad. vi. 

 535 (1865), under Liihophragma. Near the last but larger, often 2 ft. 

 high, more hirsute : radical leaves 1% — 2% in. broad ; cauline more 

 divided : petals 3—4 lines long, obovate or oval, the upper entire, the 

 lower often with a lateral tooth on each side : seeds muricate-scabrous. — 

 Southern slope of Mt. Diablo, Brewer, and Mendocino Co., Bolander; a 

 somewhat obscure species, easily confounded with the preceding. 



6. TIARELLA, Linnxus. Perennial herbs with siinple or 3-foliolate 

 alternate more or less distinctly stipulate leaves, and a terminal panicle 

 or raceme of small white flowers. Calyx 5-parted, the lobes valvate. 

 Petals 5, entire, unguiculate. Stamens 10, inserted with the petals into 

 the base of the calyx ; anthers with 2 parallel cells. Ovary 1-celled, 

 compressed, the two valves early separating and becoming unequal, one 

 becoming lanceolate-elongated, the other remaining short. Seeds few at 

 the base of each placenta. 



1. T. nnifoliata. Hook. Fl. i. 238. t. 81 (1840). Pubescent, the flowering 

 stems 6 — 15 in. high : leaves thin, ovate-cordate, rounded or triangular, 

 3 — 5-lobed, the lobes crenate-toothed ; the radical ones long-petioled ; 

 the cauline few, small, short-petioled : panicle narrow and raceme-like : 

 petfils small and almost filiform.— From San Mateo Co., Kellogg, north- 

 ward, in shady mountain woods. 



7. MITELLA, Touruefort (Mitre-woet). Small perennials with 

 slender rootstocks, radical leaves, and scapose stem with a simple raceme 

 of small usually green flowers. Calyx short ; the broad tube coherent 



