Parietaria obtusa Rydb. ex Small

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RANCHO SANTA ANA BOTANIC GARDEN
Flora of Los Angeles County, California, USA
URTICACEAE
Parietaria hespera B. D. Hinton var. hespera
Liebre Mountains region: Fish Canyon just upstream from the
confluence with Castaic Creek. Near 34° 36’ 16.6”N 118° 39’
29.3”W. T6N R17W SW 1/4 SW 1/4 sec. 14. Elev. 1640 Feet.
Floodplain on flat valley bottom with gravelly benches of rocks
derived from sandstone, granite, gneiss, etc. Surrounding slopes
steep, mostly sedimentary and metasedimentary substrates. Area
burned in late August, 1997.
Vegetation on slopes formerly mostly scrub of Salvia leucophylla,
Salvia mellifera, Eriogonum fasciculatum, and Artemisia califomica,
with riparian elements such as Platanus racemosa, Quercus agrifolia,
Salix lasiolepis, Salix laevigata, Salix exigua, Baccharis salicifolia,
and Populus fremontii developed along stream channels.
Annual, scarce on shaded canyon wall along stream.
Steve Boyd 9762B	6 May 1997
Lauren Raz
03828601