UMBELLIFER^. 319 



Washington Territory. The root is edible, and is called ImaJcai by 

 the Nez Perces Indians. 



6. Peucedanum macrocarpum, Nutt. 



Hab. Upper Columbia, and on the Kooskooskee; in stony places. — 

 Flowers white, appearing in February. Root edible, and called Yxkan 

 by the Nez Perces Indians. P. dasycarpum, Torr. & Gray, and P. 

 tomentoswn, Benth., are probably only varieties of this species, which 

 again may not be distinct from P. foenicidaceum. 



7. Peucedanum utriculatum, Nutt. 



Hab. Prairies of the Walla- Walla and other parts of Oregon; 

 southward to California. — The specimens are without fruit, but they 

 evidently belong to this species. 



8. Peucedanum nudicaule, Nutt. 



Hab. On the Kooskooskee River, Rev. Mr. Spalding. — Root a 

 globose farinaceous tuber, about three-fourths of an inch in diameter, 

 blackish externally. The aboriginal name of it is Kahet. The fruc- 

 tiferous peduncle is about a foot long. The oil-tubes of the fruit (one 

 in each interval and four in the commissure) are very slender. 



9. LEPTOTJENIA, Nutt. 



1. LEPTOTiENIA DISSECTA, Nutt. 



Hab. Upper Columbia and Spipen Rivers, and in the Nez Perces 

 country ; in rich prairies and on hillsides ; flowering in March and 

 April. — The root is large and round, and acrid in taste. The Rev. Mr. 

 Spalding states that the Nez Perces Indians call it Itsis. The ripe fruit 



