Classification
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All Names

  • Scientific Names
    • Cirsium occidentale californicum
  • English
    • California thistle

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Recent observations

Photos / Sounds

Square

What

California thistle Cirsium occidentale var. californicum

Observer

savannah10

Date

August 13, 2016 10:17 AM PDT

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Observer

samanthaddgreen

Date

July 29, 2016 03:32 PM PDT

Photos / Sounds

Square

What

California thistle Cirsium occidentale var. californicum

Observer

cwbarrows

Date

July 8, 2016

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Observer

tiwane

Date

June 10, 2016 11:04 AM MST

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Observer

robberfly

Date

June 12, 2016 12:04 PM PDT

Description

Main nectar source today on Chew's for the Pale Tiger and the Speyeria...

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Observer

robberfly

Date

June 10, 2016 11:04 AM PDT

Description

Aka " Bigelow's Thistle" beautiful and new for me...

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Observer

icosahedron

Date

May 21, 2016 01:53 PM PDT

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Observer

kevinhintsa

Date

June 6, 2016 11:26 AM PDT

Description

Listed as scarce in the park but I have found it to be fairly common .

Photos / Sounds

Square

What

California thistle Cirsium occidentale var. californicum

Observer

seangreene

Date

May 21, 2016 12:56 PM PDT

Photos / Sounds

Square

What

California thistle Cirsium occidentale var. californicum

Observer

jirimy

Date

May 15, 2016 12:47 PM PDT

Photos / Sounds

No photos or sounds

What

California thistle Cirsium occidentale var. californicum

Observer

rick_otoka

Date

February 7, 2007

Description

Pergola Bush

Photos / Sounds

What

California thistle Cirsium occidentale var. californicum

Date

May 7, 2016 12:30 PM PDT
View all observations

Description from Wikipedia

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