316 PHANEROGAMOUS PLANTS. 



his account of Geyer's collection. It seems to be most allied to E. 

 corniculatum of Spain and Portugal. The character of E. petiolatum 

 in the Flora of North America was drawn from dwarf specimens 

 collected by Nuttall. 



Imperfect specimens of another Eryngium, collected near San Fran- 

 cisco, are in the collection, and I have it from the same place, sent to 

 me by Dr. Andrews. It may be an abnormal form of E. petiolatum ; 

 but the involucral leaves and scales are all lanceolate and entire, with 

 a strong marginal nerve. The heads are larger also, hut the flowers 

 are few. 



5. CICUTA, Linn. 



1. Cicuta maculata, Linn. 



Hab. Wet places, interior of Washington Territory. — Leaves not 

 so membranaceous as in the plant of the Atlantic States. Involucels 

 of many lanceolate leaflets. Styles nearly as long as the ovary. 

 Mr. Nuttall considered this a distinct species from G. maculata, and 

 named it G. crassifolia, in my herbarium ; but I cannot find sufficient 

 characters for separating it, even as a well-marked variety. The 

 veining of the leaves is the same in both. I have not seen the 

 mature fruit of the western plant. 



6. SIUM, Linn. 



1. SlUM LINEARE, MicllX. 



Hab. Valley of the Sacramento, California. — A stout plant, 2-3 

 feet high. Leaves narrowly lanceolate, with mostly salient teeth. 

 Involucral leaves linear-lanceolate, about half as long as the rays. 

 Except in the longer involucre there are no obvious characters in 

 which it differs from the eastern plant. 



