Category Archives: photography|wildflowers

Getting Over Poodle-dog Bush Dermatitis

Poodle-dog bush along Angeles Crest Highway, July 30, 2011.
Poodle-dog bush along Angeles Crest Highway

It’s been several weeks now since my bout of contact dermatitis from Poodle-dog bush*. The dermatitis was much better after a week, but took about two weeks to completely go away. I’ve heard this is typical, and several people commented that their Poodle-dog bush experience was similar to mine.

Update July 12, 2011. A running friend who recently did some trail work removing Poodle-dog bush on the Kenyon Devore Trail sent this photograph of a blotchy red rash that developed on his forearm. He first noticed a reaction four days after doing the trail work, and the photograph was taken 10 days after exposure. As in my case, several hours later he commented that the blotchy rash had merged into a more general inflammation with swelling.

Flowers of Poodle-dog bush, a plant that causes contact dermatitis in many people.
Flowers of Poodle-dog bush

The other day I was asked if I’d rather have dermatitis from poison oak or Poodle-dog bush. The reactions are so different, they are hard to compare. Plus, my exposure to Poodle-dog bush was probably a worst case scenario. It was as if the goo from the plant was painted on my arms and legs with a brush, and left to cure. I’m guessing that an equivalent exposure to poison oak would have been much, much worse.  The reaction to Poodle-dog bush seems to vary quite a lot from person to person, and some people have been severely affected.

I was a little worried that the extreme exposure to Poodle-dog bush might make me hypersensitive to the plant, but that doesn’t appear to be the case. About a week after recovering from the dermatitis, I did some trailwork with a group that cleared a section of overgrown trail in Shortcut Canyon. Not only was there Poodle-dog bush, but poison oak and stinging nettle as well. With normal precautions — long pants, long sleeves & gloves — I didn’t have a problem.

As long as you don’t have to wade through it, the oceans of violet flowered Poodle-dog bush in the Station Fire burn area are striking. I’ve heard Poodle-dog bush described as an invasive plant. While it is an unbelievably prolific fire-follower that seems to invade an area after a fire, it is a native California plant. Given just how prevalent it is after a fire, it probably plays a key role in the recovery process, perhaps helping to restore the chemical balance of the soil, as well as providing mulch.

*The taxonomic name for Turricula parryi (Poodle-dog bush) has changed to Eriodictyon parryi. The Jepson Manual: Vascular Plants of California, Second Edition (2012) has returned Turricula to the genus Eriodictyon, as originally described by Gray. According to the Wikipedia entry for Turricula (April 11, 2012), “… molecular phylogenetic analysis carried out by Ferguson (1998) confirms that Turricula should be treated as a separate genus within a clade (Ferguson does not use the term “subfamily”) that includes Eriodictyon, and also the genera Nama and Wigandia; Eriodictyon is the genus to which Turricula is closest in molecular terms, and is its sister taxon.” I use “Turricula” and “Poodle-dog bush” interchangeably as a common name.

Related post: After the Station Fire: Contact Dermatitis from Turricula parryi – Poodle-dog Bush and these additional posts.

Tiger Swallowtail on Snow Plant

A western tiger swallowtail butterfly feeding on the nectar of the flowers of snow plant.

Even though snow plant (Sarcodes sanguinea) is an unusual plant that does not contain chlorophyll and depends on a tree and a fungus for its nourishment, it still has flowers, and the flowers still have nectar.

This was the first time I’d seen any kind of insect feeding on its flowers.

From Sunday’s out & back run from Islip Saddle to Mt. Baden-Powell.

Some related posts: Snow Plant, Western Tiger Swallowtail

Upper Las Virgenes Canyon: Humboldt Lily Run

Humboldt lily in Upper Las Virgenes Canyon

Was looking to get in a short run this morning and decided to check if any Humboldt lilies were blooming in Upper Las Virgenes Canyon.

The last time I’d seen Humboldt lilies bloom here was June 2006, following an unusually wet Spring and a two year period in which Downtown Los Angeles recorded 50+ inches of rain. 

This Spring some months were wet and some months were dry, but December 2010 was the wettest in Los Angeles in 121 years. Add to the mix that the last two water years Los Angeles recorded above average rainfall, and it seemed there was a pretty good chance the Upper Las Virgenes Canyon lilies would be in bloom.

I’d seen lily stalks in other areas in recent weeks, and some blooming Humboldt lilies in the San Gabriel Mountains, but when I checked Upper Las Virgenes Canyon in early May, there had been none. But today there was — right in the middle of thorny patch of blackberry bushes.

Also blooming in the canyon were California wild rose and the non-native plant moth mullein — so named because of the similarity of the flower’s anthers to the fuzzy appearing antennae of a moth.

Related post: Humboldt Lily

Canchalagua

Canchalagua (Centaurium venustum)

Relatively uncommon in the areas in which I run, the vivid rose-purple of Canchalagua (Centaurium venustum) is always a treat to see. Not only are its colors eye-catching, it’s petals are unusually uniform and precisely formed, which makes the flowers stand out even more.  A closer look reveals bizarrely shaped anthers, which are fluted and spiraled.



The plant is reported to have been used medicinally, but according to Chumash Ethnobotany by Jan Timbrook & Chris Chapman, based on the field notes of John P. Harrington, it wasn’t clear whether it was “a remedy of the old-time Indians, or of the whites.”

Here’s an advertisement from an 1852 volume of the American Whig Review, in which Canchalagua was specified as an ingredient of the patent medicine “Dr Rogers’ Compound Syrup of Liverwort, Tar and Canchalagua.” (The document was digitized by Google as part of the Making of America Project.)

Mariposa Lily Along the Phantom Trail

Clubhair mariposa (Calochortus clavatus)

The electric yellow of a clubhair mariposa (Calochortus clavatus) is one of the most vibrant colors of the chaparral. These blossoms are along the Phantom Trail in Malibu Creek State Park.

From Sunday’s run of the Phantom Loop.

Some related posts: Mariposa Yellow, Mariposa, Plummer’s Mariposa Lily