SPECIES OF CICUTA, 9 



Clealum, Wasliingtou, 14 August, 1889. On account of the 

 general similarity of root characters in tliis and the preceding 

 I had, while in the field, taken them for varieties of one 

 species ; but in the herbarium I can not bring them together. 

 Over and above the beautifully purple stem, the peculiar 

 serration of the leaves and also a certain minute reticulation 

 of them, the fruit is quite unlike that of C, occidenialis. The 

 Stum ? Douglasii of De Candolle is doubtless a Cicuta^ and, 

 it seems to me not improbably this very species. It has been 

 the custom to dispose of it as a synonym of C. viacnkda; but 

 its habitat lies far beyond the most westerly authenticated 

 range of tliat species. 



3fcun roofs oval or oblong, fcsJnj-fuher {form. 



5. C. MACULATA, Linn., Sp. PL 2o6, Eoots 5 to 10, oblong, 

 tuber-like, an inch or two long ; accessories innumerable, 

 slender-fibrous, forming a dense tuft. 



Eastern and Middle States of America, apparently not 

 ranging much westward of the region of the Great Lakes. 

 Root-axis very short and erect, and, with the whole stem, of 

 only half the tliickness and more than equal height of those 

 of the far western plants which have been referred to it. 

 Flowers white and showy, not, as in the western analogue, 

 dull and inconspicuous. 



6. C. BULBIFERA, Liiiu. 1. c. 255. Tuberiform roots, ap- 

 parently only 2 or 3, oyal or more rounded, ^ to 1 inch long, 

 decaying early ; replaced by both flue and coarse accessories, 

 some of these greatly elongated and tongh woody- fibrous. 



Same range as tlie last ; the basal gemmiparism of other 

 species being here carried up to the branches and branchlets. 



* * Rhizomafoiif^ species; the root-axis greatly enlarged, 

 horizmial, onlij xKirihj or not at all subterranean, 



emitting fihrons roots from heneat/i. 



ii 



7. C. VAGANS. Rhizome simple, cylindrical, close- jointed, 

 3 to 6 inches long and an inch or two in diameter, green 



