Mineral Wildflower Festival
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SCOULER'S ST. JOHN'S WORT
SCOULER'S ST. JOHN'S WORT
Hypericum scouleri
Brief Summary
Scouler's St. John's Wort is a cheerful, moisture-loving native perennial belonging to the St. John's wort family (Hypericaceae). Perfectly adapted to life along damp mountain waterways and rocky seeps, its brilliant yellow blossoms and striking halos of stamens bring a vivid splash of mid-summer gold to the shaded, wet recesses of the Lassen foothills.
Brief Summary of Floral Composition
The blossom showcases a highly symmetrical structure composed of 5 flat, spreading yellow petals sitting above 5 smaller green sepals. The true marvel is its reproductive core: dozens of elongated, thread-like stamens are organized into distinct clusters surrounding a central, superior ovary topped with 3 slender styles. This dense, circular crown of pollen ensures that any landing insect is thoroughly dusted, maximizing the chances of successful cross-pollination.
Technical Name
Hypericum scouleri (formerly classified as Hypericum formosum var. scouleri)
Informal Names
Scouler's St. John's wort
Western St. John's wort
Mountain St. John's wort
Key Characteristics
The Starburst Center: Features brilliant, star-shaped yellow flowers spanning about 0.5 to 1 inch across. The defining visual feature is the large, exploding cluster of numerous long, golden stamens that radiate outward from the center like a miniature firework.
Petal Detailing: The five bright yellow petals are often subtly dotted with tiny, black glandular spots along their outer edges.
Foliage: The leaves are smooth, oval to oblong, and grow in a neat, opposite pattern directly attached to the stems. If held up to the light, the leaves show tiny, translucent glandular dots.
Growth Habit: A rhizomatous perennial herb with upright, smooth green stems that can grow anywhere from 10 to 30 inches tall.
Notable Significance
Ecosystem Hydration Indicator: Finding this plant is a sure sign of a healthy, localized water source. It functions as a riparian specialist that stabilizes wet banks with its creeping rootstocks.
Chemical Profile: Like its famous European cousin (Hypericum perforatum), it contains hypericin and other active compounds. It has a rich history in traditional Western herbalism, though native species are typically appreciated in the wild rather than harvested commercially.
Pollinator Buffet: The dense brush of pollen-packed stamens makes it incredibly attractive to a wide array of native bees, hoverflies, and beetles.
Locations Found
Habitat: Strictly prefers moist to wet settings, flourishing in damp mountain meadows, along stream banks, seepages, and wet rocky crevices.
Elevation Range: Extremely common in the montane and subalpine zones of Northern California, thriving effortlessly at elevations between 3,000 and 9,000 feet throughout the Cascades and Sierra Nevada. It is a frequent find near snowmelt creeks around Mineral and Lassen Volcanic National Park.
Documenting the Wildflowers in Mineral
Documenting the Wildflowers in Mineral
In preparation for the Wildflower Festival, we've been photographing the wildflowers around Mineral. Watch the album where we're keeping them to see how they progress throughout the season. We'll have a sheet with names and photos for the day of the Wildflower Festival. "I know the names of the flowers, but forget them, if I don't use them," says Stephanie Dennis. "That's why having an annual Wildflower Festival could be helpful. I've been noticing the little flowers more than ever since preparing for the Festival," added Lisa Chandler.
Have photos to add? Add to the folder or email mineralcalifornia@gmail.com.
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