California Native Plant Society – San Luis Obispo Chapter
Annual Potluck Banquet
Saturday, January 21, 2017
$10 per person, plus a pot luck item for the dinner
Morro Bay Community Center
1001 Kennedy Way, Morro Bay
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Social Hour – 5:30 pm
Buffet Style Potluck Dinner – 6:30 pm
Chapter business – 7:30 pm
Program: “Rediscovering and conserving California’s prairie landscapes” – 8:00 pm
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Our banquet speaker this year will be Dr. Glen Holstein , Sacramento Chapter Botanist
Glen is Chapter Botanist for the Sacramento Valley Chapter of the California Native Plant Society. He’s a graduate of Cal Poly, San Luis Obispo, with a degree in biology, and from there to botany graduate school at UC Davis. Glen took a few years off to help found the California Natural Diversity Data Base, participate in creation of the Cosumnes, Cold Canyon, Nipomo Dunes, and Carrizo Plains reserves, and to write a chapter on riparian biogeography for Warner & Hendrix’s California Riparian Systems. Following that he finished his botany Ph.D. at Davis with a dissertation on climatic influences on plant physiognomy in world biomes.
As a botanist consultant he saw much of California and its rare plants. He has been a CNPS member continuously since soon after it was founded. Retirement has enabled him to devote much more time to CNPS as Botanist and Council Delegate for the Sacramento Valley Chapter while also serving on several allied conservation organization boards. One of his projects was guest-editing and writing three articles for the 2011 Fremontia issue on California’s prairies and grasslands.
Tickets are $10 per person – You may reserve your spot with credit card or PayPal by clicking the Tickets button, or if you prefer, you may send payment to D. Krause, 2706 Newton Drive, Cambria, CA, 93428. You may print this form to include with your check.
Questions? Contact David Krause at firstname.lastname@example.org or 805-927-5182
CNPS will be providing the beer, wine, coffee, tea, and assorted beverages included with the cost of the banquet. Plates, glasses, cups, and napkins will be available; we ask that you bring your own eating utensils, although plastic utensils will be available.
For the dinner potluck, we are asking those with last names beginning with the following letters to bring the suggested item (and serving utensils). However, if you have a dish you especially want to share with the group, please feel free to bring it or contact Lauren (805-460-6329, email@example.com) for alternative suggestions.
A to H: main meat or veggie dish
I to Q: salad (with dressing) or side dish
R to Z: dessert
Please put your name on a label or piece of tape on your serving items so they can be returned to you.
Exit Hwy 1 at Morro Bay Boulevard. At the “roundabout” turn right onto Quintana Road, and left onto Kennedy Way (after Albertson’s). Go ½ block. Community Center is on the right.
If you have any questions, please contact Lauren at firstname.lastname@example.org, or 805-460-6329.
Hope to see you there!
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Invasive Species of the Month: Iceplant (Carpobrotus edulis)
Iceplant is a perennial in the Aizoaceae family, native to South Africa and grows in sandy areas on the coast from Eureka to Baja. This succulently leaved plant is overwhelming and carpets the land. I’ve seen outcompete giant Coreopsis and beach spectacle pod. Iceplant competes for nutrients, water, light and space. In very dry places they have long straggling woody stems. The pink or yellow flowers are beautiful and peak in early summer. The leaves root in the soil at the nodes and reproduces by seed. Seeds that passes through an animals gut germinates better.
Iceplant may be pulled and removed–which is the case at Piedras Blancas lighthouse, with spectacular results from the emerged native plant seedbank. Iceplant may be sprayed and the dead matter makes an excellent mulch for native plantings. Frost also kills Iceplant.
According to Cal-IPC iceplant was brought to California in the early 1900’s for stabilizing soil along railroad tracks. It was planted along freeways by Cal Trans until the 1970’s. Now it provides job security for weed warriors.
– Mark Skinner
Carpobrotus edulis or Carpobrotus chilense?
These two species are very similar, and the Jepson descriptions do not fully cover the overlap of features. Generally C. chilense has smaller magenta flowers (3-5 cm diameter) compared to 8-10 cm for C. edulis, which favors yellow flowers, but there is color ‘crossover’. The flower of C. edulis is pedicelled and C. chilense is sessile. The fruit of C. edulis is triangular in cross section, that of C. chilense more rounded and softer.
Carpobrotus edulis on earthquake-elevated mudflat, Shark Inlet, David Chipping
The photograph above shows a massive carpet of Carpobrotus at Shark Inlet. The bench in the foreground used to be pickleweed marsh until the Paso Robles earthquake caused the sand dunes to press down into the mudflat, squishing the edge of the flat above the high tide line and enabling the iceplant invasion.
– David Chipping
O.K…. so we’re not Vermont. However we do have some pretty fall color displays. If you like the gold of aspen, you will see the same colors in our closely related cottonwood stands, both trees belonging to the genus Populus. (more…)
Monarch caterpillar feeding on Asclepias fascicularis
All of our local native milkweeds are perennials, but like a lot of our drought-adapted plants, die back and go dormant during the long late summer and fall drought. Many gardeners, knowing there is a monarch butterfly/ milkweed connection, try to keep the milkweeds green all year, or use non-native milkweeds that stay green. Cal Poly’s Dr. Francis Villablanca has shown that winter breeding by monarchs will take place if green milkweed is available, which would not normally happen in the overwintering populations in SLO County. Nonstop breeding on the same plants can perpetuate the transmission of a devastating parasite called OE, for Ophryocystis elektroscirrha.
Normally, the transmission cycle is broken when milkweeds go dormant. The infection can kill adults as they emerge from their chrysalis, while mildly infected monarchs fly poorly, don’t reproduce normally, and die early. These very sick butterflies can then carry spores of the pathogen into the milkweeds in other gardens or along the entire migration route.
You don’t have to tear out a non-native milkweed if you cut it way back. While the infection issue is much greater for the central USA migration paths, it is critical that we take preventive actions on the coast, especially since we are still determining how bad it actually is in California.
Many thanks to Dr. Villablanca of Cal Poly on putting all of this together.
Invasive Species of the Month
Jubata grass (Cortaderia jubata)
There is an intense infestation of Jubata grass on the California coast. As almost everyone knows it mars the most
beautiful places such as Big Sur. On their web site California Invasive Plant Council (CalIPC) describes that Jubata grass is native to northern Argentina, Bolivia, Peru Chile and Ecuador. It was grown in France and Ireland from seed collected in Ecuador. It may have come to California from France and was first seen in 1966. Jubata grass has been called the “marriage weed” as honeymooners dragged the plumes behind their cars in Big Sur. Oy! What a mess!
Jubata grass flowers from late July to September. No pollination is necessary for reproduction. Flowers are female
only, which produces viable seed. Each plume may contain 100,000 seeds! Plants may have 1 to 30+ plumes. I started removing Jubata grass in the mid 1990’s with Jack Biegle and John Nowak, just north of Oso Flaco boardwalk.
I’ve been at it ever since and removed hundreds from the Guadalupe-Nipomo Dunes, San Luis Obispo, Cambria and
Vandenberg. I’m happy to report that from the many hundreds that were in the Guadalupe-Nipomo Dunes there are only about twenty remaining.
Terrible news for the Coast Live Oak and Tanbark Oak of our County. CNPS was a major contributor to the collection of leaves on possibly suspect oak and bay trees. Locally organized by CNPS’ Lauren Brown and Cal Fire’s Kim Corella , volunteers sampled bay trees as ‘carriers’ of the disease’s spores, which up to this year did not come south of Monterey County. The leaves were sent up to the labs in the Bay Area, and for the first time there were a large number of infections found, especially along Santa Rosa Creek. Other sites were Vineyard Drive, Cypress Mt. Rd., the west side of Atascadero, Cal Poly in Stenner Creek amd Leaning Pine Arboretum and on Prefumo Canyon Rd. This was a major shock, primarily because of the breadth of the newly found infections.
There is no cure. Prevention is through good sanitation in limiting the transport of spores. To learn more about the visible symptoms on infected leaves, go to the SOD website: https://nature.berkeley.edu/garbelottowp/
Image is of the Bay tree, courtesy of Marlin Harms