Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Oak phenology at Santa Barbara, 27mi W. Durango,
Durango, Mexico, 19 January 1978
"Golden Oak"
species
"Blue Oak"
species
No sign of
acorns or
flowers on or
below tree
9
30%
6
40%~
Many Acorns
In tree
1
3%
0
0%
Few or no
Few acorns in
tree, many
acorns +/do
Cups on ground
20
67%
9
60%
Flowers
0
0%
0
0%
Total
30
15