ALGODONES DUNES, IMPERIAL COUNTY FEBRUARY 2009




This was my third visit to Algodones Dunes and it occurred on a weekend when a widespread rain event was taking place seemingly all over Southern California. My previous attempts to find the rare and endangered Peirson's milkvetch had come later in the spring and had proved fruitless, but this time I was successful. This is a beautiful and very different looking milkvetch from most other species I'd seen before, especially in the leaves and the seeds, which according to the Jepson Manual are the largest of any American species of Astragalus. Of the other species I found in bloom, only the Helianthus was represented by more than a few individuals. As with previous pages, an upside-down V symbol next to the common name indicates a taxon that was new to me when I photographed it on this field trip.


   
Spectacle pod
Dithyrea californica
Brassicaceae
 
Desert sand verbena
Abronia villosa var. villosa
Nyctaginaceae
 
Spanish needles
Palafoxia arida var. arida
Asteraceae

 
Emory indigobush
Psorothamnus emoryi
Fabaceae

   
Wiggins's croton
Croton wigginsii
Euphorbiaceae

 
Algodones Dunes sunflower
Helianthus niveus ssp. tephrodes
Asteraceae

 
 
Peirson's milkvetch ^
Astragalus magdalenae var. peirsonii
Fabaceae
 
 
   


Snoutbeetle
Ophryastes sp. ?

   
Fanleaf crinklemat
Tiquilia plicata
Boraginaceae
 
Dune buckwheat, Colorado Desert buckwheat
Eriogonum deserticola
Polygonaceae

 
 
Desert dicoria
Dicoria canescens
Asteraceae
Creosote bush
Larrea tridentata
Zygophyllaceae
 

   
Desert panic grass
Panicum urvilleanum
Poaceae
 
cf. Narrow-leaved cryptantha
Cryptantha angustifolia
Boraginaceae