Apiastrum angustifolium Nutt.

03366439
RANCHO SANTA ANA BOTANIC GARDEN
Flora of Los Angeles County, California, USA
APIACEAE
Apiastrum angustifolium Nuttall
LIEBRE MOUNTAINS REGION: Upper watershed of Osito Canyon
between Interstate 5 and the Old Ridge Route, vicinity of ‘’Osito
Flat”, a distinctive, open grassy break in slope under the high
tension power lines. Near 34° 37’ 33.8”N 118° 42’ 43.6”W.
T6N R17W SE 3/4 sec. 7. Elev. 2600 - 3000 Feet
Steep-sided ridges of bedded sedimentary rocks, dropping to narrow,
winding canyon bottoms. ‘’Osito Flat” area with deeper, clay
soils situated on extensive break in slope. Entire area burned in
August 1996.
Before bum, the vegetation was relatively open chaparral of
Adenostoma fasciculatum, Eriogonum fasciculatum, Ceanothus
cuneatus, and Cercocarpus betuloides on the slopes, grassland with
Stipa, A vena fatua, and Hemizonia fasciculata at ‘’Osito Flat”. At
present time, post-fire annuals well developed, especially Lotus
salsuginosus, Lotus wrangelianus, Camissonia californica,
Cryptantha muricata, Phacelia viscida, Emmenanthe penduliflora,
and Salvia columbariae.
Annual, flowers white. Common.
Steve Boyd 9451
Lauren Raz, Timothy S. Ross
1 Apr 1997