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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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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.)