Field journal, v4298
Page 7
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Mayhew 1962 Journal 3. Jan. 25 Glamis area, Imperial Co., Calif. where they might be. It appears that considerable more water stands in the washes southeast of Glamis (toward Ruthven) than to the northwest (toward Amosa). Ike says he hears more toads in that direction. During the afternoon we dug out some perennials in the Algodones Dunes to check for tap roots. Our results: A Calendula 10" high had a taproot 32" long. An Eriogonum ~ 6'1/2 " .. .. >5' .. A Croton 52" .. .. .. .. 18" .. " .. .. 25" .. .. .. .. .. >35" .. " .. .. 5' .. .. .. .. .. >(at least) 5' .. (Frank Vasek said later, from our description of the roots, these taproots may have gone down 6-8 feet deeper as very fine roots). We never got down to the roots of an Ephedra californica. The stems were covered with sand at least 2 feet deep, and we couldn't expose the roots because of cave-ins. However, the roots must go to considerable depths, judging from our digging operations. (Calendula plicata), Eriogonum deserticola, and Croton californica were the species excavated.)