256 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
castle, Nebr. (Clements in 1893); Helena, Mont. ( Kelsey in 1888); Buena Vista, Colo. 
(Crandall in 1897); Provo, Utah (Jones in 1894); Nevada ( Watson in 1868); Siskiyou 
County, Cal. (Palmer in 1892); Pierce County, Wash. (Piper in 1889). 
26. HERACLEUM L. Sp. Pl. 1: 249. 1753.—For description of genus and native: \ 
species see page 248. 
HeracLeEUM spHonpyLium L. Sp, Pl 1: 249. 1753, a native of Europe, and the 
first species cited under the genus, has been found on ballast near New York City 
by Addison Brown. 
27. DAUCUS L. Sp. Pl. 1: 242. 1753.—For description of genus and native species 
see page 249, 
. Daucus carora L, Sp. Pl. 1: 242. 1753, the original of the cultivated carrot, and a 
native of Europe and Asia, has become exceedingly common in North America, 
often being one of the most troublesome weeds. As contrasted with D. pusillus it 
may be recognized by its much more robust habit, broader leaf segments, and much 
larger umbels. It is needless to cite the specimens examined, as they come from 
every part of the United States, especially the northern portion. The flowers are 
usually white, with the central one of each umbel purple, but in specimens from 
Ithaca, N. Y. (Rowlee in 1891), the whole umbel is a bright canary yellow, while 
near Washington, D. C. ( Ward in 1877 and Mearns in 1897) there occur forms with 
all the flowers of the umbel purple. A rose-colored form is reported by Millspaugh 
as common in West Virginia ana published by him as ‘forma rosea’’ in West Va. 
Agr. Exp. Station Bull. 24: 369. 1892. 
WA 
