The mission of the California Native Plant Society is to increase understanding and appreciation of California’s native plants and to conserve them and their natural habitats through education, science, advocacy, horticulture and land stewardship.

Dedicated to the preservation of California's native plants

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Rare Plant Communities Workshop

Rare Plant Communities Workshop

We are now taking registrations or the Rare Plant Communities in Coastal San Luis Obispo County workshop, Saturday April 18, 2020, 8:30am –
12:30pm, San Luis Obispo.

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Invasive Species Report: Poison-hemlock (Conium maculatum)

A member of the Apiaceae (Carrot) family Poison-hemlock is a biennial native to the Europe and North Africa and is a common weed, widespread in California. Poison-hemlock may germinate throughout the year. First year plants are low-growing and may overwinter in mild climates and plants resemble carrot plants.

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What Does Low Rainfall mean for Your Garden?

Well, with our rainy season half ways over, the outlook is dire. Looking at the “up-to-date” records, we have received about half of normal rainfall, season to date. So what does this mean for those of you who have just put in those natives after the plant sale?

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Protecting the Dunes

As we focus this month on the Oceano Dunes and its rare plants, habitats, and proposals that could change this area forever, it is worthwhile to look at the area in the larger context.

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“Project A” of the Oceano Dunes State Vehicle Recreational Area

Besides the obvious disruption to the natural environment of Oso Flaco Lake through vastly increased vehicle traffic which will disrupt an extremely important birding area, CNPS plant specific concerns are hereby listed and should receive thorough analysis of projected loss and mitigation in the environmental review process.

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RETAIL SALES POSITION OPEN WE BADLY NEED A VOLUNTEER TO MANAGE OUR BOOK/T-SHIRT SALES TABLE. CONTACT MELISSA MOONEY

Download and Print the new CNPS-SLO Planting Guide
thumbnail SLO Planting guide

 
A Few Rare Dune Natural Plant Communities

A Few Rare Dune Natural Plant Communities

San Luis Obispo County dunes, and the Oceano dunes surrounding Oso Flaco Lake in particular, are awesome places that are full of rare plants and at least three rare natural communities, as defined by the Manual of California Vegetation …

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What do you think about the Obispoensis newsletter going digital only?

Obispoensis is currently available in three formats: Printed and mailed to our members who have not declined, Email, and PDF via the website.  Newsletter editor David Chipping:  A lot of chapters are moving to electronic only. and I would like to do the same. Here are reasons for your consideration:   1) Content is not limited to, or controlled by, page numbering in multiples of 4……any size can be sent;   2) Color, not B&W;   3) Obispoensis will be searchable;   4) It saves trees and energy, and also our costs;   5) Room for special editions on focused issues with no additional costs or overhead;   6) People can print their own hard copy if needed. You would receive an e-mail giving you a link for downloading the latest edition. In the event that a person had absolutely no way to shift away from a paper version, a special printing could be made and mailed to that person.PLEASE EMAIL dchippin@calpoly.edu IF YOU ARE OPPOSED TO ‘GOING ELECTRONIC’, AND PLEASE GIVE REASONS. THE EDITOR WILL SHARE ANY OBJECTIONS WITH OUR BOARD, SO THAT AN INFORMED DECISION CAN BE MADE.

Event Calendar

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  • December Chapter Meeting
    7:00 pm-9:00 pm
    12-06-2018

    801 Grand Ave, San Luis Obispo, CA 93401, USA

    801 Grand Ave, San Luis Obispo, CA 93401, USA

    CHAPTER MEETING Dec. 6th  2018 – Thursday – 7:00 pm

    • Veterans Hall, Monterey and Grand, SLO
    • Mixer and Browse Sales Table 7:00 pm, Program 7:30 pm

    Program: Carrizo Ecological Reserves, George Butterworth

    George grew up in the Central Valley. Among his first memories were cattails and red-wing blackbirds, and crops and orchards. He spent 30 years in Southern California, graduating from UCSB in history. He taught tennis for many years. He came to the Carrizo Plain in 1993 and started collecting plants and enjoying the nature. When California Dept. of Fish and Wildlife acquired south Chimineas in 2001, he worked on the botany there as a volunteer. This led to his getting on the payroll. He continues to botanize both the Chimineas and Carrizo.Plain, and was a major force in producing the digital Plants of Carrizo Plain book. A great number of the photo illustrations are by George.

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  • Bill Deneen Memorial Hike
    All day
    12-08-2018

    Point Sal Rd, Guadalupe, CA 93434, USA

    Point Sal Rd, Guadalupe, CA 93434, USA

    Saturday, December 8th, 9:30 am, Bill Deneen Memorial Hike to Point Sal and Get-Together

    As a way to acknowledge the contributions of Bill Deneen and to remember him, we are planning a hike to his beloved Point Sal. We will hike to the ridge and then to the beach, though hikers can choose to go as far as they would like. The total hiking distance is up to 10 miles with more than 1,000 ft. elevation gain – so it is easy to strenuous, depending on the length chosen.

    After the hike, hikers and non-hikers alike will meet at La Simpatia Restaurant (827 Cabrillo Hwy, Guadalupe) at 2:00 pm, to eat, trade stories, and remembrances. Bring a story and any pictures or memorabilia you would like to share.

    Directions to Point Sal: from Hwy 101 exit Hwy 166 west towards Guadalupe. Turn left on Highway 1, then right on Brown Road. Continue on Brown Road until the gate. Park at the gate. Make sure to leave no valuables in your car, there have been break ins. Dress in layers, bring hat, sunscreen, plenty of water, snacks. Contact Andrea 805-934-2792, or Carlos 805-546-0317, or Bill 805-459-2103. Rain cancels the hike, but not the get-together at 2:00 pm.

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Volunteer at the Hoover Herbarium

Where is the Hoover Herbarium located?

The Hoover Herbarium is located on Cal Poly SLO campus on the 3rd floor of the Fisher Science Building (33) in rooms 352 and 359. Questions: email Jenn Yost at jyost@calpoly.edu

What do volunteers do?

During the volunteer sessions at the Hoover Herbarium, people can take part in any number of activities.  One of our primary responsibilities is mounting new specimens.  This involves taking dried and pressed plants and glueing them to paper.  When we mount plants, we do it in such a way that those specimens will last for hundreds of years.  Each specimen is a physical record of what plants occurred where and when.  Without this valuable information we wouldn’t know when a species goes extinct, expands or contracts its range, or where species occur.  After mounting, the specimens are databased and geo-referenced.  Then they are filed into the main collection. We have over 80,000 specimens at the Hoover Herbarium.  We are also working on a SLO Voucher Collection, which will contain one representative specimen for each species in the county.  Volunteers look through our specimens and pick the one that should be added to the Voucher Collection.  Additionally, we are actively working on our moss and lichen collections.  Volunteers can choose what aspects of the work they would like to participate in.  Anyone and everyone is welcome. Questions: email Jenn Yost at jyost@calpoly.edu

What days/hours do you need volunteers?

Hoover Herbarium volunteers sessions are Monday 3-5 pm and Friday 9 – 1. Questions: email Jenn Yost at jyost@calpoly.edu

Where do I park?

Parking permits are required on campus Monday through Thursday, 7:00 am through 10:00 pm; and Friday, 7:00 am through 5:00 pm. You can either buy a $6 day pass, a $4 3-hr pass, park in a metered space, ride the bus, or park off campus and walk in. Questions: email Jenn Yost at jyost@calpoly.edu 

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PHOTO GALLERY

Fiscalini Ranch, January, 2019. Cambria, California. Marlin Harms.

Hypogymnia sp., Tube Lichen. Marlin Harms.

Phaeolus schweinitzii, Dyer’s Polypore.
Marlin Harms.

Mycena purpureofusca, Cone-dwelling Mycena. On cone of Monterey Pine, Pinus radiata. Marlin Harms.

Coastal Lichens on Rock–Caloplaca & Acarospora. 
Marlin Harms

Gymnopilus spectabilis, Laughing Gym, After Showers. Marlin Harms.