California Sunflower

Coast Sunflower by Cliff Hutson

Encelia californica: California Sunflower, also known as Coastal Sunflower and California Encelia.  I have seen it referred to as Brittlebush, but that would be Encelia farinosa to me.

California Sunflower grows in the Coastal Sage Scrub habitat of Southern California.

Coastal sage scrub species have adapted to an ecosystem that rarely freezes in the winter and only occasionally experience temperatures over 90-degrees F during the dry California summer.

Fairy Duster

As a naturalist, I like to have a theme in mind when I lead an interpretive walk. I see this as a means of engaging the audience’s interest, as opposed to just wandering around identifying plants until their eyes start to glaze over. One of the themes I use is “does the common name of this plant make sense”.  A favorite plant for this discussion is the Fairy Duster, Calliandra eriophylla. It takes little imagination to see that the fluffy pink blossoms do resemble feather dusters scaled down to fairy size, assuming we are thinking of Tinker Bell instead of Titania.

The flowers appear between late winter and late spring. They have dense clusters of pale to deep pink stamens and are about two inches wide. I think that they are quite attractive; and, in fact, Calliandra is derived from the Greek kallos, "beautiful," and andra, "stamen”. The leaves are also interesting being twice pinnately compound with each division bearing five to ten pairs of leaflets.

The plant, also known as False Mesquite, is a densely branched shrub, about two feet tall and twice as wide, native to western North America. A member of the Pea Family (Fabaceae), it belongs to a group of primarily tropical plants that include Acacias and Mimosas. However, Fairy Duster grows in sandy washes and on slopes in the arid desert and grasslands of California, Arizona, New Mexico and Texas; and Mexico.

But, to say it occurs in California is a bit misleading as it is found only in the Creosote Brush Scrub community and then seemingly limited to Imperial and San Diego Counties. Due to this geographic circumscription , it is included in the California Native Plant Society Inventory of Rare and Endangered Plants on list 2.3 (rare, threatened, or endangered in California; common elsewhere). In the interest of full disclosure, I would like to point out that one specimen was collected by Dr. Robert F. Thorne (of RSABG) on April 12, 1964, in Riverside County and that there is also a questionable 1881 accession from Kern County. I, myself, first encountered Fairy Duster while hiking in Riverside County. It was on land that was starting to be developed somewhere outside of Palm Springs, so it may not have been a natural occurrence.

Wherever we find it, I think it offers people an opportunity to ask people to look more carefully at nature and by observing this one flower they might go to focus on other aspects of nature rather than passively walk though it.

Bladderpod

Peritoma arborea

There is a video which posits that taxonomists, having no new plants to name, have begun to rename all of the plants with which we are familiar.  That obviously overstates the matter. But, as a non-botanist observer of the plant kingdom, I understand what they are saying. Bladderpod plant is a case in point. 

When I first came upon the plant, in the late 1970s, it had the scientific name of Isomeris arborea (Nutt.). Then about December 1989 the name was changed to Cleome isomeris (Greene). Next, in July 2010, it became Peritoma arborea (Nutt.). Furthermore, it was moved from the Capparaceae (which includes capers) to a family named Cleomaceae (spiderflowers). Lastly, it has been divided into three varieties based on the shape of the fruit, with var. angustata having fusiform fruits, var. arborea having obovoid fruits, and var. globosa having spherical fruits. 

It is endemic to California occurring in varied habitats: Coastal Sage Scrub, Creosote Bush Scrub, and Joshua Tree Woodland. Which is to say, it ranges from the deserts to the Channel Islands. The plant is a branched shrub that can up to six feet in height. It has thin, evergreen leaves about half an inch to an inch long. Bladderpod will flower in any month of the year. This is not very common in California natives. The flowers, appearing as abundant inflorescences at the ends of the stem branches, are yellow with long stamens. The inflated bladder-like fruits give the plant its common name. Some say that the epithet “Isomeris” was a nod to the equal halves of these pods.

Bladderpod is generally described as ill-smelling. However, in my experience, rubbing a pod produces a scent much like that of bell pepper which I think is not bad at all.

California Dodder

One of the sites I refer to when preparing to write about a plant I encounter in my rambles is maintained by the Consortium of California Herbaria  which provides information about California vascular plant specimens that are housed in participant herbaria. One can search on just about any plant and obtain a list of accessions from around the state.

California Dodder (Cuscuta californica), hits close to home as it has records dating from 1897 to 2009 for specimens found in and around Claremont. Two of these are housed in the Rancho Santa Ana Botanic Garden herbarium. One was collected from the Bernard Field Station, just to the east. The other was found along Thompson Creek, where Holly and I often pass by the plant.

California Dodder

Cuscuta californica, also called Chaparral Dodder, is an annual parasitic herb or vine that is native to California. It is also found outside of California, but is confined to western North America. Dodder is readily identified by its threadlike, hairless, yellow, orange, or red shoots which twine around host plants eventually creating a tangled mat. One notable feature is that it does not usually have roots that reach the ground. Instead, knoblike organs along the shoot (haustoria) penetrate the host stem. Shoots either lack leaves or have very tiny red, yellow, or orange scalelike leaves pressed close to the stem. It tends to bloom from May through October. The white flowers are tiny, only about 3 to 6 millimeters wide. The fruits are even smaller.

Dodder once had its own family, but it is now consigned to CONVOLVULACEAE, the Morning Glory Family. The epithet Cuscuta seemingly comes from Cuscu'ta a name of Arabic derivation meaning "dodder”. The common name, Chaparral Dodder, tips us to one of its habitats. It is also found through out the state in many other plant communities such as forests and grasslands. And, of course, “the City of Trees and PhDs”.

Apache Plume

I write a column called "Plant of the Month" for Oaks Notes the newsletter for the volunteers at Rancho Santa Ana Botanic Garden. One of the pleasures I derive from writing these articles is that my research deepens my knowledge of the plants I pick for the column. Recently I was almost too ashamed to admit that I found out that what, for decades, I have taken to be the flower of Apache Plume is actually its fruit.

Apache Plume (Fallugia paradoxa) belongs to ROSACEAE, the rose family. It is native to the arid habitats of the mountains of east San Bernardino County. It is also found in the desert woodlands and scrub of Nevada, Utah, Arizona, Colorado, Texas, and northern Mexico. It is the only member of its genus. Which is to say it is monotypic. 

The flower of the shrub is roselike, or to some a little like an apple blossom, with rounded white petals and a center filled with many thready stamens and pistils. The flowers are small, but not inconspicuous if one really looks at the bush when preparing to write about it.

However, the persistent fruits have distinctive feathery plumes that look a lot like pompoms. They are formed when the ovary of the flower remains after the petals fall away, leaving the styles, each 3 to 5 centimeters long. Each style is attached to a fruit, which is a small achene. The plant is covered with these clusters. They are greenish at first, turning pink or reddish tinged later on.

Eventually the plumes turn white and when backlit are quite spectacular. The fruit finally disperses when wind catches the styles and blows them away.

The plant grows three to eight feet tall, with straw-colored branches and spreads six to eight feet. The small leaves are green on top and rusty underneath. Apache Plume can look a little scruffy, but still be attractive in a drought tolerant garden.

Summer Holly

Summer holly (Comarostaphylis diversifolia) is found in coastal chaparral from Santa Barbara County southerly into Baja California. There may be populations on the Channel Islands as well. Some sources cite that the geography makes for two subspecies: Comarostaphylis diversifolia ssp. diversifolia in coastal Southern California and Baja; and Comarostaphylis diversifolia ssp. planifolia on the Channel Islands and the Transverse Ranges north of Los Angeles. It is not very common, but not yet listed as rare.

A slow‐growing, evergreen shrub or tree to 20 ft. tall. Attractive features include shiny leaves, white flowers, red berries and shredded bark. While the flowers are urn-shaped similar to the more familiar manzanita, the red berries are warty or wrinkly rather than smooth. That feature also distinguishes it from toyon. Summer holly is a member of Ericaceae, commonly known as the heath or heather family, a family of flowering plants found most commonly in acid and infertile growing conditions.

Hoary-leaved Ceanothus

hoary |ˈhôrē|

adjective ( hoarier , hoariest )

1 grayish-white : hoary cobwebs.

• (of a person) having gray or white hair; aged : a hoary old fellow with a face of white stubble.

• [ attrib. ] used in names of animals and plants covered with whitish fur or short hairs, e.g., hoary bat, hoary cress.

There are at least 52 species of ceanothus in the world. California is home to 43 species, sometimes known as California lilac, and 13 of these are native to the chaparral of Southern California. The dominant species in our local, lower-elevation, Santa Monica Mountains is Bigpod Ceanothus, Ceanothus megacarpus. However, at higher elevations it is replaced  Ceanothus crassifolius, Hoary-leaved Ceanothus. 

Plants in the genus Ceanothus are divided in to two groups - the subgenus Ceanothus and the subgenus Cerastes. The later is actually the larger group. But, I think that most of us, thanks to its showy displays, are more familiar with the former which is characterized by thin leaves that have three main veins, arrayed alternately on the stems. The leaves of Cerastes are leathery with a single main vein, and generally opposite in arrangement. 

A member of the Buckthorn family (Rhamnaceae) it is a large, evergreen shrub which may grow to twelve feet in height.  The leathery olive green leaves have white fuzzy undersides, which makes them hoary. The field guides I use describe the leaves as being “small”, which seemed a bit vague.  An internet gardening catalog stated they they are 1/4­ to 1/2" long. However, I took some measurements on a specimen at Rancho Santa Ana Botanic Garden and found them to be closer to 1-1 1/2”. Which reminds me of the old taunt - “Who are going to believe, the facts or your lying eyes?” The small (truly about a quarter of an inch), rounded flowers are white with the inflorescences borne on short stalks.

Hoary-leaved Ceanothus is distributed through the Outer South Coast Range, Transverse Range, Peninsular Range, and Northern Baja on dry ridges or slopes below 3700'. Which is to say locally we can find it in the Verdugo, San Gabriel, Santa Monica and San Bernardino Mountains.

There are plenty of chances to see it, let’s go look.

Toloache or Jimsonweed

Toloache or Jimsonweed
Originally uploaded by The Marmot

Datura wrightii

Datura, the name I first learned, is a member of the Nightshade family (Solanaceae) and is not uncommon from Central California to northern Mexico and east across the Southwest to Texas. There is certainly plenty of it around Thompson Creek. (This plant is near the intersection of Mills and Mt. Baldy Road. You can also see near the Girl Scout camp.) So you can imagine my surprise when two of my new field guides: Introduction to California Chaparral and Introduction to the Plant Life of Southern California: Coast to Foothills fail to mention it.

Perhaps this is due to the plant’s seedy reputation. Easily recognized by its trumpet-shaped flowers , it has been used for hundreds of years for its hallucinogenic properties. However, it is as toxic as it is narcotic and has been responsible for the deaths of some seeking to use it for its traditional religious purposes; or more likely, recreation.

Like many Americans of my generation, I first learned of the properties of Datura, also called Jimsonweed, through reading Carlos Castaneda’s The Teachings of Don Juan. His purported experiences led many to go out and try it for themselves. Surprisingly, I never did.

I say surprisingly as I have gone through what I called a Euell Gibbons phase and have an abiding interest in ethnobotany, as evidenced by my work at Rancho Santa Ana Botanic Garden. These pursuits have led me to consume more than a few native plants of California. But, I have a healthy respect for for things that might kill me if I do not know what I am doing and figure to give Datura a permanent pass.

The book California Indians and Their Environment: An Introduction by Kent G. Lightfoot and Otis Parish has a few interesting entries on what they call Toloache. They describe religious uses, such as gaining the ability to transcend reality, and medicinal purposes. Some groups prepared it in a drink as a painkiller and a treatment for a variety of ailments.

Speaking of names, the National Audubon Society Field Guide to North American Wildflowers refers to the plant as Southwestern Thorn Apple. It says that the common name Jimsonweed is a corruption of Jamestown Weed. The story goes that it got the name when many soldiers sent to quell Bacon’s rebellion in 1676 were poisoned by it.

By the way, the typically white flower may be some times tinged with violet.

Black Mustard

Black Mustard 2
Originally uploaded by The Marmot

Black Mustard

Last week, Holly and I began seeing patches of Black Mustard (Brassica nigra) on the far side of Thompson Creek, west of Higginbotham Park, while walking on the paved path. This is another one of those plants that is so commonplace most people assume that is a native. But, it is not.

Popular lore has it that the early Spanish explorers, such as Juan Bautista de Anza, spread the seeds of this plant along the routes that they forged ala Hansel and Gretel. Presumedly, the plant would be in bloom during the return trip and they could easily find their way home. I would like to think that this story is true. But, table mustard is made from black mustard so no doubt many people planted for that purpose

Whatever the reason, it is now common through out California and dominates the hillsides in our area at this time of year. Each Spring finds the hills covered in bright yellow flowers. The bloom begins in April and can extend through July.

Some sources say that black mustard, though widespread, is not considered to be as big a problem as some other invasive species. It prefers disturbed habitats, such as roadsides, and is not as likely to extend in to truly natural areas. However, fire counts as a disturbance and other studies have shown that mustard has totally displaced many of our endemic fire annuals. It has decidedly naturalized and as people further encroach in the sage scrub and chaparral environments it and other broad-leaved herbs are sure to follow.

Mustard and the majority of the native plant species in Southern California have their roots in the Mediterranean Basin. The climates are pretty much the same which allows these plants to adapt, settle in, and then take over when conditions are ripe.

These conditions are decidedly in force along Thompson Creek. The landscape surrounded on all sides by homes, parks, a flood control channel, and the effects of the Grand Prix Fire of 2003 still in evidence it is the very definition of a disturbed environment. Still it is a welcome oasis from the urban surroundings.

Green Waves of Grass

Well, the wind sings its own song

Moving patiently along

• Thomas George Russell

“Santa Ana Wind”

An odd wind rose up seemingly from nowhere the other day as Holly and I were out walking along Thompson Creek. It was not a Santa Ana, nor did it seem to be ill-intentioned like the wind in the Tom Russell song. However, it did have its own tune and I marveled at the way it made the grass on the far hillside move.

I was, at first, somewhat dismayed that I had no way to capture the moment, then I realized that I had my new iPod nano in my pocket and was able to create the accompanying little video. I think it came out well considering the limitations of the technology of putting a video camera in such a tiny device. I did eliminate the audio track as the rush of the wind just turned out as a dull roar. Not a song after all.

It is fairly certain that this is a non-native grass. Introduced grasses in this area include the bromegrasses (Bromus spp.), wild oats (Avena spp.), and ryegrasses (Lolium spp.). If they were sentient, they would be ill-intentioned as introduced grasses have effectively replaced our native grasses in this disturbed area. Between the wear and tear of encroaching human activity and the big fire of October 2003 most native plants are in a struggle for existence.

There are two non-native shrubs that are plentiful along the creek. They are rock-rose (Cistus spp.) (see photo) and rosemary (Rosmarinus officinalis). Most of these appear to be planted. However, their occurrence is not uncommon in the chaparral throughout California as they are Mediterranean plants that have naturalized and do quite well on their own in our environment.

I think that I have also spotted Scotch broom (Cytisus scoparius) although I can not get close enough to verify it. It is another invasive species that grows so well in the Santa Monic Mountains (my home range) that I thought it was a native until I learned better. I feel that its ability to take root (pun intended) can be paralleled to the earliest human settlement of California, in the Late Pleistocene and Early Holocene, and the subsequent waves of migration. Unlike some communities, where if you are not a member of the founding families you will always be an outsider regardless of how many generations your own family has lived there, moving here practically makes you a native overnight if you want to be one. However, we do draw a line for vegetation.