Visit 6: Ceanothus Obsession

4/10/2017
I arrived at Sugarloaf at 10 am on a cloudy day (temp in 60s) and decided to take the Lower Bald trail. The Ceanothus are in bloom! Several bushes of C. jepsonii (leaves opposite, 7-8 teeth, purple flowers) grow on serpentine soil, one near Pseudotsuga menziesii and Quercus agrifolia. Also found C. cuneatus or White Buckbrush (white flowers) as well as C. sonomensis. From what I have read, although C. sonomensis is rare in California overall, it is more common in Sonoma county. I identified it because of its 5-toothed leaves and small whitish-purple flowers. I will return, as there may be other species of Ceanothus that I missed.

I spotted Sanicula bipinnatifida (Purple Sanicle), Sisyrinchium bellum (Blue-eyed Grass) and Calystegia (morning glory). Lupinus now covers the meadows, and Ranunculus appears in semi-shady places as well as sunny grasslands.

Posted on April 11, 2017 04:54 PM by laurablatt laurablatt

Observations

Photos / Sounds

What

Ceanothus (Genus Ceanothus)

Observer

laurablatt

Date

April 10, 2017 12:18 PM PDT

Description

On Lower Bald trail in serpentine, chaparral area. Mixed with other species of Ceanothus.

Photos / Sounds

What

Musk Brush (Ceanothus jepsonii)

Observer

laurablatt

Date

April 10, 2017 10:39 AM PDT

Photos / Sounds

What

Sonoma Ceanothus (Ceanothus sonomensis)

Observer

laurablatt

Date

April 2017

Description

Small evergreen leaves with only 5 teeth. Flowers are pale purple. Found on Lower Bald Mt. trail on serpentine chaparral along with other species of Ceanothus.

According to F. Bowcutt, Ceanothus sonomensis is common locally in Sonoma County (Aliso 18 (1) p. 19--34).

I would love to hear from folks who found Ceanothus sonomensis, especially samples at Sugarloaf.

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