Southern Siskiyous or the Annularity of Rarity

Original Publication DATE: 6/10/2012

Lewisia kelloggii in the Siskiyous

In the southern Siskiyou Mountains, around the headwaters of Bluff Creek, a discovery was made a few years ago that I was intrigued to see for myself. Kirk Terrill, a Forest Service Botanist, found an unusual flower on an isolated ridgeline of serpentine. In 2010 these plants were determined to be Lewisia kelloggii and, thus far, this is the only documented population in the Klamath Mountains. Elsewhere it grows sparsely in the high country of the Sierra Nevada. In the Siskiyous it grows under and among another regional rarity–lodgepole pine. Driving up the forest service road from Highway 96 toward Cedar Camp I knew these trees would be the key to finding the rare lewisia, which only blooms for a short time in early June. Upon finding the lodgepoles and the serpentine, I unsaddled and walked the stark ridgeline. Within half and hour I had succeeded in my own rare-plant treasure hunt. Read about the one that inspired my journey, written by Carol Ralph of the North Coast Chapter, Califiorina Native Plant Society, HERE. Continue reading “Southern Siskiyous or the Annularity of Rarity”

Conifer Rarity in Southern California

Original Publication DATE: 3/17/2012

Work occasioned a trip to southern California which, of course, also required me to spend some time with a few regionally endemic conifers. I had never visited the Torrey pine or Cuyamaca cypress, so in planning the trip to Palm Springs for a conference, Allison and I took a few extra days–looping south toward the Mexican border–to see North America’s rarest pine and cypress.


Torry Pine (Pinus torreyana)

Rarity is a new endeavor for the Torrey pine. Though it is the current record-holder for “rarest North American pine” it has not always been that way. It is an ancient pine, whose lineage (or at least that of a near ancestor) extends back as far as the Oligocene or Miocene with a range that extended as far north as Oregon (Kral 1993). In the Pleistocene, the species probably ranged throughout the coastal basins of Southern California but became restricted to coastal San Diego County and Santa Rosa Island over the last 12,000 years or so, during Holocene warming (Waters and Schaal 1991). Its closest extant relative is probably the Coulter pine (Pinus coulteri).

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Charismatic specimens are sculpted by the pervasive wind, fed by moist coastal fog, and nourished by the sandstone on which they root.

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Hotel, motel, whatcha ya gonna do today? (Say what!)

Original Publication DATE: 12/25/2011

Why, climb Mount Hilton in the Trinity Alps of course.

As I approached the trailhead the car’s outdoor thermometer read 28oF and, with the windows down, the iPod shuffled Rapper’s Delight for my auditory indulgence. I pulled into the large parking lot at Canyon Creek as the lone (semi-domesticated) representative of the human race. Donning hat and gloves, I hoisted my pack and climbed toward what I hoped would be a world-class penthouse suite. With Sugar Hill Gang resonating in my head–as other drift-less tunes have on previous trips–the lyrics seemed preposterously apropos as I progressed toward the named summit (hotel, motel, Mount Hilton…). What five-star resort could possibly compare to a perch on glacially polished granite–surrounded by sky, stars, and wilderness–with a forecast of continued high pressure and a hard freeze? None in my mind.

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A five-star morning sunrise high in the Trinity Alps Wilderness.

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High Pressure in the Siskiyou Wilderness

Original Publication DATE: 12/16/2011

The winds were blowing across southern California and the skies were clear in the north. This unseasonal weather, cultivated by a high pressure system sitting over most of the West coast, motivated a 24 hour whirlwind into the Siskiyou Wilderness. My goal was to search for an unusual population of Alaska yellow-cedar documented and collected by Overton and Butler in 1979. I had discredited this report for several years because it did not fit within the parameters of my expectations for the species’ regional ecological amplitude–reported at a mere 3115 feet. If true, this would be over 2000 feet lower than any other regional population. In the fall I made it to the HSU Herbarium to look at the specimen and, sure enough, it was properly identified by the duo. I had to find this unusual place. The high pressure was the excuse to escape the stress of the end of 2011, get into the mountains, and attempt to find another outlier in the Siskiyou Wilderness.

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Miracle Mile

Russian Wilderness, California

Original Publication DATE: 8/31/2011

In the late 1960’s, after arriving at Humboldt State University as a new professor, John O. Sawyer received a letter in the mail from G. Ledyard Stebbins. Stebbins, widely regarded as one of America’s leading evolutionary biologists but also a lover of rare plants, suggested to John that he needed to visit a remote place in the Klamath Mountains known as Blake’s Fork. Here, he said, John might help verify a report for one of California’s rarest conifers–the Engelmann spruce. Stebbins hoped John could record his findings in a new database called the Inventory of Rare and Endangered Vascular Plants of California organized by the California Native Plant Society. With conifers calling, John and his friend and co-worker Dale Thornburgh went on a journey that would change our understanding of conifer distributions, plant associations, and wilderness in California.

Russian Wilderness
The heart of the Russian Wilderness and the Miracle Mile, with Russian Peak to the far left. This spiney ridge separates Sugar Creek (left) from Duck Creek (right).
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