31 



. mat it belongs to Cervaria. 



The arrangement of Drude in the Pflanzenfamilien is 

 manifestly not a good one, as P. officinale, macrocarpum and 

 triternatum have very little in common, and therefore Coulter 

 and Rose did well in ignoring it. 



Coulter and Rose give as one of the distinctions between 

 Lcptotaenia and Peucedanum the absence of a longitudinal 

 ridge in the latter. I have not yet found a Peucedanum that 

 did not have such a ridge. 



Arranging the species of Cogswellia in the genetic order 

 as far as a linear arrangement can do it, I would divide them 

 up as follows : 



Section Euryptera (Nutt., Torr. & Gray Fl. N. A. 1 629 

 (1840) as genus). This and the following are Lep- 

 totaenioid sections. It is characterized by caespitose 

 stems from a woody and fleshy root branching below, rigid 

 acerose-tipped leaves with few and broad divisions after the 

 fashion of Cymopterus section Scopulicola; fruit very broad, 

 almost round, and with thick blunt-edged wings as wide or 

 wider than the body; commissural ridge evident; fruit deeply 

 notched at both ends ; dorsal ribs very low or almost obsolete ; 

 tips of peduncles and ravs tumid. This section includes 

 C. lucida (Nutt. T. & G. Fl. 1 348, (1840), as Eurvptera), 

 C. Hassei (C. & R. Bot. Gaz. 14 276 (1889), as Peucedanum) ; 

 this hardly deserves specific rank; C. pallida (C. & R. Umb. 

 242, (1900) as Euryptera), C. Howellii (Watson Proc. Am. 

 Acad. 20 369, (1885) as Peucedanum),C. insularis (Eastwood 

 Proc. Cal. Acad, III I 106 pi. 8, (1898) as Peucedanum). 



The second section of Cogswellia is Crassipedunculata 

 characterized by single to few crowns from a slender, erect, 

 simple and fleshy root, nearly acaulescent; leaves with large, 

 pale, beautifully veined, smooth leaflets toothed only above, 

 leathery ; peduncles greatly swollen and white at top and rays 

 somewhat so; fruit Leptotaenioid, elliptical, not emarginate, 

 with narrow and obtuse-edged wings, and fine and low ribs, 

 and faint commissural ridge. This includes C. nudicaulis 

 (Pursh Fl. 1 196 (1814) as Smyrnium), and C. latifolia (Nutt. 

 T. & G. Fl. 1 625 (1840) as Peucedanum). 



The third section of Cogswellia is Lonchophylla with 

 single to few crowns from a slender and elongated but fleshy 

 und simple and erect root ; leaves ternately divided into linear 

 to filiform, leathery but not rigid, elongated, often pubescent, 



