Featured Plants
An in-depth look at a plant – what makes it special, it’s characteristics, where to find it in the natural landscape, and other notables. Common non-native and invasive plants are occasionally reported about.

Viola pedunculata (Johnny-jump-up)
Wild (California, yellow, or grass) violet, pansy or Johnny –jump-up
This botanical illustration was created by Mardi Niles using a Micron 005 #1 Archival Ink pen and Prismacolor Verithin colored pencils on Bristol Regular paper. It will be the first of several beautiful pieces of native plant art by Mardi you will be seeing on our covers into the near future.
Viola pedunculata is widespread throughout the coastal portion of our chapter area. It extends inland as far as there is enough moisture. Dr. Hoover reports that it is apparently absent from the desert portions of our county such as the Carrizo Plains. It is always a visible treat read more…
The Sargent Cypress Botanical Reserve: A Hammock Forest
Author: WOODY FREY, Professor emeritus, OH Department, CalPoly, San Luis Obispo. This article was first published in Pacific Horticulture and is reprinted here with permission. Six miles north of San Luis Obispo, California, up a winding road off Highway 101 at an...
read moreCommon Milkweed (kotolo) Asclepias eriocarpus
The cover drawing and article for this issue of the OBISPOENSIS was written and drawn by Alice Meyer. She was a very active member (and first Hoover Award Recipient in the 1970 and 80’s. She is the one who named our newsletter, OBISPOENSIS, and served as its editor...
read moreCoast Live Oak
Dirk Walters, illustration by Bonnie Walters Oaks have been in the news a lot recently. Essentially all of it has been bad from the Oak’s point of view. First, there was the clearing of valley (Quercus lobata) and blue (Q. douglasii) oaks in the Paso Robles area. and...
read moreCommon (White) Yarrow (Achillea millefollium)
Common (White) Yarrow (Achillea millefollium) The plant discussed in this issue of the Obispoensis is one that I’ve wanted to take on for a long time, but could never bring myself to ask Bonnie to draw. Since we are using photos to illustrate it by, I think it’s time....
read moreThe Juniper-Oak Plant Association of Caliente Mountain
Caliente Mountain is the highest spot in the County, and forms the western side of Carrizo Plain National Monument The oak on Caliente Mountain. is Tucker's oak, a scrub oak with blue-green, spiny leaves that stands a little over head height but can reach to 7 meters....
read moreFall Color
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. Cottonwoods are riparian trees, and the...
read moreCeanothus hearstiorum
Introduction October and November are when our Chapter gets serious about growing native plants. We have a November meeting devoted to it as well as our annual plant sale. This got me to remembering some articles written and drawings drawn by Alice G. Meyer that are...
read moreSolidago californica
California Goldenrod (Solidago velutina ssp. californica or S. californica) The photo by Dr. David Chipping that accompanies this note are of the California goldenrod (Solidago velutina ssp. californica or Solidago californica). According to Dr. Hoover in his Vascular...
read moreOenothera deltoides
Desert Evening Primrose (Oenothera deltoides) Desert evening primrose (Oenothera deltoides) is in full bloom at Shell Creek as I write this. So it seemed appropriate to resurrect a drawing Bonnie drew back in 1981. It is one of her earlier drawings since it shows a...
read moreCucurbita palmata
Coyote melon Bonnie’s drawing for this issue of Obispoensis is based on a picture sent to me by George Butterworth. The species, Cucurbita palmata, has many common names. The ones I found on the web include coyote melon, coyote gourd, desert gourd, palmate-leafed...
read moreQuercus Kelloggii
Kellogg Oak The following is an article from February 1993. It was chosen by the editor to spare me the choice since Bonnie and I were away in late October. We totally agree with his choice; we had totally forgotten about it. The repeat of this article reminds me that...
read moreAntirrhinum ovatum
Oval Leaved Snapdragon Drawing by Bonnie and article by Dr. Malcolm McLeod below appeared in the November, 1991 Obispoensis. When you read it you will see lots of similarities with our current drought situation as well as the much hoped for possibilities of an...
read moreCornus sericea
Creek Dogwood For this issue of the Obispoensis, I’m going out on a limb so to speak. Since the plant is a very small tree or moderately sized shrub, that limb will prove to be slender. The plant is the red osier, creek, or as stated in the new Jepson California...
read moreAtriplex patula
Spear Orache, Spear Salt Bush As I write this article, it’s August in the year of California’s third most severe drought. There’s not much out there in bloom. So I’ve retreated to one of the few places where plants are doing anything. Yes, I’m returning to the coastal...
read moreCalandrinia ciliata
Red Maids Bonnie’s drawing for this issue of Obispoensis is of a plant that is found throughout the western United States as well as spreading north into British Columbia. It has also been recorded in a couple of South American countries. It is especially common in...
read moreValley Oak Snag
We are going back into the archives for this cover of Obispoensis. The landscape is a drawing of the Shell Creek area that Bonnie drew for the December 1991 cover. The inset is an ID drawing of the leaves and acorn of the valley oak. Why would one want to combine...
read moreErodium moschatum
Filaree Erodium moschatum & E. cicutarium I assume it is not news to anyone that California in general and the Central Coast in particular has been experiencing an extreme drought. That means that most native plants that are adapted to this situation have been in...
read moreVernal Pool with Downingia
Vernal Pools occur where there is moderate to large sized “natural” depression with no outlet. The depression has to be large enough to capture enough rainfall to fill the pond to some depth. The water collects in the lowest point in the depression. There also must be...
read moreMystery Manzanita in the Elfin Forest
All three of Bonnie’s drawings this time are of manzanitas. One is a repeat of the endemic rare plant commonly known as Morro manzanita or Arctostaphylos morroensis. As you will see, it is included here to serve as a basis of comparison. The other two drawings are...
read moreCynodon dactylon
Bermuda Grass It’s November in a very dry year which was preceded by a dry year. Most native plants are waiting for the rains. The small amount of rain that fell in the last week in October I doubt will be considered significant, i.e., sufficient enough to initiate...
read moreDendromecon rigida
Bush Poppy A funny thing happened while Bonnie and I were working on the drawing and article for and about the plant discussed in this issue of Obispoensis. Before we started, we consulted Dirk’s list of past drawings and could not find any entry for Bush Poppy,...
read moreSilene laciniata
Coastal catchfly Late summer or early fall (or more appropriately “late dry season”) is a downtime in our local wilds, especially true when we've had no significant rain after December. Even the animals seem to be resting. But if one looks carefully in our coastal...
read moreCalystegia macrostegia
Coastal Morning Glory (California) The plant featured on the June 2013 cover of the Obispoensis was chosen because of a request. It is the California, coast, island, or wild morning glory (Calystegia macrostegia). The common name, false bindweed, is sometimes used...
read moreFremontodendron californicum
Flannel Bush This month’s cover drawing by Bonnie Walters is a repeat of flannel bush, Fremontodendron californicum. It was last used on the Obispoensis cover back in 1991. Does anybody remember it? Fremontodendron classification It is being reused now due to a...
read moreAsparagus asparagoides
Asparagus Fern or Bridal Creeper This month’s plant is a South Africa native that has become naturalized in Southern California where there has the potential to become an extremely troubling weed species. It is already considered so in some localities in Southern...
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