186 University of California Publications in Botany [VOL. 9 



24. EANUNCULACEAE (BUTTERCUP FAMILY) 



Apetalous (Actaea often has apetalous flowers but may be distinguished by the 



fruit developing as a berry, not as an achene nor as a follicle). 

 Leaves divided or deeply lobed; fruit an achene. 

 Leaves alternate. 



Leaves palmately divided into 5-7 lobes; sepals white (petaloid) 



1. Trautvetteria 



Leaves 2-3 times ternately compound; sepals herbaceous (not petaloid) 



2. Thalictrum 



Leaves opposite or whorled 3. Anemone 



Leaves undivided; fruit a follicle 4. Caltha 



Petals present. 

 Flowers irregular. 



Upper sepal spurred; petals 4 5. Delphinium 



Upper sepal forming a helmet-shaped hood; petals 2 6. Aconitum 



Flowers regular. 



Flowers with long backward spurs formed by the always 5 petals 



7. Aquilegia 



Flowers without spurs; petals indefinite in number, usually more than 5. 



Fruit a berry; flowers white 8. Actaea 



Fruit a follicle; flowers dark red 9. Paeonia 



Fruit an achene; flowers yellow 10. Ranunculus 



1. TEAUTVETTERIA 



1. Trautvetteria grandis Nutt., in T. and G., Fl., vol. 1, p. 37. 



1838. 



Type locality. "Shady woods of the Oregon." 



Range. Washington and British Columbia south to the northern 

 Sierra Nevada. Also in New Mexico, according to Wooton and Stand- 

 ley. 



Zone. Canadian. 



Specimen examined. Mill Creek, Plumas County, Mrs. R. N. 

 Austin in 1877. 



In 1912 Dr. Greene published an article on "New Species of 

 Trautvetteria" (Leaflets, vol. 2, pp. 190-193) ; among the descriptions 

 is one (p. 191) having as its basis the plant of Mrs. Austin 's v the new 

 name being "Trautvetteria rotundata, " an exact synonym. 



2. THALICTRUM 



Flowers perfect; upper leaves sessile 1. T. sparsiflorum 



Flowers dioecious or polygamo-dioecious; upper leaves petioled. 



Achenes %c -1 /4 i ncn l n gj leaflets firm 2. T. Fendleri 



Achenes % c -% inch !ong; leaflets thin 3. T. occidentale 



1. Thalictrum sparsiflorum Turcz., in F. and M., Ind Sem. Petrop., 

 vol. 1, p. 40. 1835. 



Type locality. Not ascertained. 



Range. Subarctic America south to California and Colorado. 



Zone. Canadian. 



