Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Oak phenology at El Batel, 15 Jan. 1978
Big-leaved,
Wide Acorn
Species
Narrow-leaved,
teeny-acorn
species
No sign of
flowers or
acorns on or
below tree
15
54%
5
25%
Many acorns in
tree
4
14%
6
30%
Few acorns in tree,
Many acorns and/or
cups on ground
9
32%
8
40%
Flowers (catkins)
0
0%
1
5%
TOTAL
28
20