IQI2] 



NELSON— IDAHO PLANTS 



141 



This splendid species is nearest to T. breviflora Nutt., i 

 different that there is no need to emphasize the differences. 



Jordan Valley, near Silver City, J 



Macbride 



type. It seems to occur in the rich soil of river bottoms. 



Cicuta cinicola, n. sp. — From a thick stout root (P) 1 widely 



or less) high: leaves large; the 



m 



more 



m 



trifoliate, gradually reduced and simplified upward, the uppermost 

 very small and trifoliate 

 or simple; the leaflets of 

 the lower leaves from ovate 

 to broadly lanceolate, 12- 



cm 



5 



long stout petioles, coarsely 

 serrate, the teeth broadly 

 triangular and abruptly 

 apiculate; upward the 

 leaflets become gradually 

 smaller and narrower, the 

 uppermost lance-linear and 

 only 2-3 cm. long; invo- 

 lucre wanting or of a few 

 green or rarely scarious- 

 margined bracts, or some- 

 times a single foliar bract 

 2-4 cm. long: pedicels 



— Cicuta 



numerous, 3-7 mm. long; fig. ] 



the involucels of many 



lance-linear, scarious-margined bractlets, as long as or longer than 

 the pedicels: fruit strongly compressed laterally, the dorsal diameter 

 twice as great as the lateral, about 3 mm. long, the stylopodium 



long: the carpels somewhat 

 xmilatcral: the low rounded 



mm 



more 



ribs in surface display about equally the intervals in which lie the 

 large irregular solitary oil tubes; commissural face plane, rather 

 narrow, with two smaller oil tubes (fig. 1). 



1 The root was not collected, but the impression of the collectors is that it was too 

 large and deep-set to be removed with the means at hand. 



