HOBO CANYON, SAN JOAQUIN HILLS, ORANGE COUNTY
MAY 2012 PAGE ONE
Photographs by Michael Charters




My main goal in joining an Orange County CNPS group led by Ron Vanderhoff in the San Joaquin Hills was to see and photograph the rare big-leaved crownbeard, Verbesina dissita, which I had never encountered before. Although we found many of the plants, none of them were in bloom. The bloom period is May-August so I will go back later in the summer. The San Joaquin Hills are a low coastal range that begins in Newport Beach and extends in a southeasterly direction to San Juan Capistrano. We were not in Hobo Canyon itself but along the ridge shown in the above photograph, which curves around the head of the canyon. Hobo Canyon itself is a short coastal canyon immediately to the north of Aliso Canyon, and the primary habitats that are found in this area are Diegan coastal sage scrub and southern maritime chaparral, both of which are influenced by the proximity of the ocean and the addition to the overall moisture load of frequent fog drip, even in the summer. The symbol ^ next to the common name indicates a taxon that was new to me when I photographed it on this field trip, and an asterisk indicates a non-native species. Thanks to Hartmut Wisch for the bee ID.


   
Slender tarplant
Deinandra fasciculata
Asteraceae
 
Three-spot
Osmadenia tenella
Asteraceae
 
Sapphire woolstar
Eriastrum sapphirinum
Polemoniaceae


 
Coast paintbrush
Castilleja affinis ssp. affinis
Orobanchaceae


 
 
Western dichondra
Dichondra occidentalis
Convolvulaceae
 
 
 
 
Chalk dudleya
Dudleya pulverulenta
Crassulaceae
Many-stemmed dudleya
Dudleya multicaulis
Crassulaceae
 
 


 
Small-seeded spurge
Chamaesyce polycarpa
Euphorbiaceae
 



   
Splendid mariposa lily
Calochortus splendens
Liliaceae
[Photo on right of male longhorn bee, tribe Eucerini in family Apidae, which frequently sleep overnight in a flower]


Coastal California buckwheat
Eriogonum fasciculatum var. fasciculatum
Polygonaceae
 
 



 
 
Gumplant
Grindelia camporum
Asteraceae
 
 



   
Littleleaf redberry
Rhamnus crocea
Rhamnaceae



       
   
Laurel sumac
Malosma laurina
Anacardiaceae

   
    Bushrue
Cneoridium dumosum
Rutaceae


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