Polygonum shastense
Polygonaceae
Shasta Knotweed
Prostrate to upright from woody stems with many branches. Leaves flat, becoming twisted when older, oblong to widely oblong with pointed to rounded tip, hairless on both sides. Flowers consist of 2–3 in. clusters with leaves along upper branches. Calyx red with darker midvein, 8 stamens, style with 3 lobes. Grows in rocky slopes, gravelly places in mountains.
- Rarity: Uncommon
- Flowering Time: Mid Summer
- Flower Form: Petals 5, Completely Free, Regular Shape, Ovary Su
- Life Cycle: Perennial
- Height: 6–12 inches
- Habitat: Subalpine
- Found In: Crater Lake NP
- Native: Yes
