(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 

 hypogynous; petals white. Common. Spring. 



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

 styles granulose; calyx perigynous; petals 

 white. San Eafael. Spring. 



6, Tiarella L. 



Stamens 10. Pistils 2. Petals entire. Ovary 

 1-celled; styles long; stigmas simple. Capsule 

 valvularly dehiscent to the base. Yalves un- 

 equal. Placentae parietal. Flowers white. 24! . 



1. T. UNIFOLIATA Hook. Marin County. 

 Spring. 



5. Heuchera L. ALUM-KOOT. 



Stamens 5. Pistils 2. Petals entire. Ovary 

 1-celled; styles long. Capsule valvularly de- 

 hiscent. Valves equal. If. 



1. H. MICRANTHA Dougl. Calyx pointed at 

 the base, shorter than its pedicel. Camp Tay- 

 lor. Summer. 



