Hydrilla, a new noxious aquatic weed in California
Richard R. Yeo
W. B. McHenry
California Agriculture 31(10):4-5. DOI: 10.3733/ca.v031n10p4.
Richard R. Yeo is Botanist, Agricultural Research Service, U.S. Department of Agriculture, Davis; Walter B. McHenry is Weed Scientist, Cooperative Extension, UC, Davis.
Abstract Not Available – First paragraph follows:
Since about 1776 California has been continually plagued by the inadvertent introduction of foreign plants that spread rapidly and become weeds. Examples include crabgrass (both smooth and hairy), yellow starthistle, oxalis, bermudagrass, and johnsongrass.