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California Rare Plant Rank 1A

Plants ranked as California Rare Plant Rank 1A are presumed extirpated in California and either rare or extinct elsewhere. There are 2 taxa in the East Bay ranked 1A:

Cryptantha hooveri (Hoover's cryptantha)
Plagiobothrys glaber (hairless popcornflower)

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CNPS Inventory of Rare and Endangered Plants of California

Antioch Dunes evening primrose (Oenothera deltoides ssp. howellii) at Antioch Dunes National Wildlife Refuge. Photo by James Gorham, CC BY-NC 4.0.
Large specimen of pallid manzanita (Arctostaphylos pallida) at Huckleberry Preserve. Photo by Pete Veilleux, East Bay Wilds.
Hospital Canyon larkspur (Delphinium californicum ssp. interius). Photo ©2010 David Ogden.
Western leatherwood (Dirca occidentalis)Western leatherwood (Dirca occidentalis).

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Upcoming Events:

September 27, 7:30 pm - 9:00 pm
Save the Date for Our Next IN-PERSON Meeting: Joan Hamilton, Video Producer for Save Mount Diablo (Lecture)
October 5, 5:30 pm - 6:30 pm
CNPS Native Gardening / Naturehood Webinar: FAQS for the Native Plant Garden (On-line Lecture)
October 9, 7:00 pm - 8:30 pm
It’s not just another fish! Native Fish and Native Plants: How they interact (webinar) (On-line Lecture)

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