Joshua Tree Nat. Mon. #3
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 Joshua Tree Fls 1   Joshua Tree Fls 2   Joshua Tree Fls 3   Joshua Tree Fls 4   Joshua Tree Fls 5   Red Butte Wash Flora 

Joshua Tree National Park Wildflowers 3
Red Butte Wash, Riverside County

© W.P. Armstrong 11 February 2008

Desert Varnish

Massive boulders coated with iron oxide desert varnish line Red Butte Wash.

 Explanation For Desert Varnish 
Possible Life Forms On Mars?

Desert ironwood (Olneya tesota) and jumping cholla (Opuntia bigelovii).

Close-Up View Of Desert Varnish

Cactaceae: Escobaria vivipara var. alversonii (Foxtail Cactus)

The central spines are straight compared with the curved fish-hook spines of Mammillaria.

Mammillaria tetrancistra. The areoles have 3-4 fish-hook spines.

 Mammillaria tetrancistra In Palo Verde Wash 

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