(187) 



1. T. GRANDiFLORA R. Br. Petals laciniate- 

 ly pinnatifid, purple. — Saucelito. Tamalpais. 

 San Miguel. Spring. 



2. T. BoLANDERi Gray. Petals almost en- 

 tire; styles smooth; calyx almost liypogynous; 

 petals white. Tamalpais. Spring. 



3. T. HETEROPHYLLA Hook. & Am. Petals 

 obtusely 3-lobed; styles smooth; calyx almost 

 hj^ogynous; petals white. — Common. Spring. 



4. T. AFFiNis Bolander. Petals 3-dentate; 

 styles granulose; calyx perigynous; petals 

 white. — San Rafael. Spring. 



6. Tiarella L. 



Stamens 10. Pistils 2. Petals entire. Ovary 

 1-celled; styles long; stigmas simple. Capsule 

 valvularly dehiscent to the base. Valves un- 

 equal. Placentae parietal. Flowers white. 2^ . 



1. T. UNIFOLIATA Hook.— Marin County. 

 Spring. 



5. Heuchera L- Alum-root, 



Stamens 5. Pistils 2. Petals entire. Ovary 

 1-celled; styles long. Capsule valvularly de- 

 hiscent. Valves equal. — U. 



1. H. MICRANTHA Dougl. Calyx pointed at 

 the base, shorter than its pedicel. — Camp Tay- 

 lor. Summer. 



