(187 ) 
1. TT. aranpiFiora R. Br. Petals laciniate- 
ly pinnatifid, purple.—Saucelito. Tamalpais. 
San Miguel. Spring. 
2. T. Bouanpert Gray. Petals almost en- 
tire; styles smooth; calyx almost hypogynous; 
petals white. -Tamalpais. Spring. 
3. 'T. HETEROPHYLLA Hook. & Arn. Petals 
obtusely 3-lobed; styles smooth; calyx almost 
hypogynous; petals white.—Uommon. Spring. 
4. TT. arrinis Bolander. Petals 3-dentate; 
styles granulose; calyx perigynous; petals 
white.—San Rafael. Spring. 
6. Tiarella L. 
Stamens 10. Pistils 2. Pctals entire. Ovary 
1-celled; styles long; stigmas simple. Capsule 
valvularly dehiscent to the base. Valves un- 
equal. Placente parietal. Flowers white. 2¢. 
1. T. unmromiata Hook.— Marin County. 
Spring. 
5, Heuchera L. Atvm-noor. 
Stamens 5. Pistils 2. Petals entire. Ovary 
l-celled; styles long. Capsule valvularly de- 
hiscent. Valves equal.— 2. 
1. H. micrantaa Dougl. Calyx pointed at 
the base, shorter than its pedicel.—Camp Tay- 
lor.‘ Summer. 
