Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Hendrickson
1950
Journal
Aug. 22 Los Angeles to Lower Covington Plate, 5000 ft.,
Riverside Co., Calif. After lunch in 29 Palms,
gassed cars and visited Joshua Tree Natl. Monument
Headquarters. Obtained information and maps from Custodian
(Obtained several of the small information folders containing
small maps of the monument). Drove W. on 29 Palms-
Morongo Valley Road, turning off about 3 mi. W. of the
town of Joshua Tree. Joshua Tree is dominant on this
road near the 29 Palms-Morongo Valley Rd., with
"Burron Brush" and a few Creoste Bushes. The
road, heading approx. south at first, climbs slowly
but steadily toward a series of steeper, rocky
hills. Near the hills Yucca mohavensis becomes
fairly common. A sparrow hawk was seen
at about this point. Oquntia bigelowii also
seemed more common near the hills. The
road rounds a granite spur and flatter ground,
entering a broad notch in the range of
steeper hills. On this flatter terrain Junipers
and Joshua Trees are dominant. Jerry Russell
saw what was probably a Road Runner here.
Took the left branch at a fork and again began
a gentle climb. Helvia became common on the
hillside, along with Junipers, Joshuas Trees, and
Yucca mohavensis. Divyon makes its appearance
near 5000 ft. Passed an old mine up on the
hillside and began to drop into Lower Covington
Plate. This appears to be more or less of a