PENTACHAETA/WESTLAKE VISTA TRAILS, SANTA MONICA MTS
APRIL 2016 PAGE ONE




The last time I was on these trails was in 2009, and before that 2003, so I thought this was a good time to see what our less than plentiful El Niño spring rains might have produced. I'm certainly glad I did because I spent a lovely day in a floristically diverse area along a trail lined with wildflowers, some just in modest numbers and some in great abundance. These trails are in the 600-acre Triunfo Creek Park in the rural Agoura-Westlake area at the end of Lindero Canyon Road south of the 101 freeway. The Pentachaeta Trail is named for the Lyon's pentachaeta which is a federally listed 1B.1 rare plant and which grows in large numbers in this area. I was also glad to see three species of Calochortus (my favorite group of plants) blooming in this area. An asterisk next to the common name denotes a non-native taxon. Thanks to Dave Stith and Dick Swinney for alerting me to my mis-identification of the snake. An asterisk next to the common name denotes a non-native taxon.


   
Lyon's pentachaeta
Pentachaeta lyonii
Asteraceae
[Named for California botanist, nurseryman, forester and plant collector William Scrugham Lyon, 1851-1916]


 
Purple clarkia
Clarkia purpurea ssp. quadrivulnera
Onagraceae


 
 
 
Slender tarplant
Deinandra fasciculata
Asteraceae
 
 



   
Blue dicks
Dichelostemma capitatum ssp. capitatum
Themidaceae



   
Golden yarrow
Eriophyllum confertiflorum var. confertiflorum
Asteraceae


 
Caterpillar phacelia
Phacelia cicutaria var. hispida
Boraginaceae



 
 
 
California chicory
Rafinesquia californica
Asteraceae
 
 


 
Foothill penstemon
Penstemon heterophyllus var. australis
Plantaginaceae



   
California poppy
Eschscholzia californica
Papaveraceae


 
Purple nightshade
Solanum xanti
Solanaceae

[Named for Hungarian zoologist János Xántus, 1825-1894]


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