University of Wisconsin-Madison, Wisconsin State Herbarium (WIS)
v0121528WIS
0707802c-bc83-41f1-bef2-421bf8eaa506
Sonchus asper (L.) Hill
Asteraceae
Watson, S. H.
s.n.
United States, Wisconsin,
Collection date: 1860-61. Common. Permanently transferred to WIS in 1982. This collection consisted largely of specimens donated by or purchased from Mr. S. H. Watson, whose collections were made in southern Wisconsin from 1859-1862. The Watson collection contains some specimens received from fellow Wisconsin botanist T. J. Hale and a few other collectors, including I. A. Lapham, D. C. Eaton, S. B. Mead, and M. H. Clark.