Ash Creek Ivesia
(Ivesia paniculata )
Photo Copyright Rick York and CNPS
Description: Low mat-forming perennial herb with a branched woody base. Leaves greenish, 5/8 to 1-3/4 inches (1.5-4.5 cm) long with 5-15 tightly overlapping 3-5 lobed leaflets. Sepals 5, triangular. Petals 5, linear, yellow, short, less than 1 mm long. Stamens 5 and 2-3 smooth and hairless pistils.
- Tightly overlapping leaflets.
- 5 stamens and 2-3 pistils.
Distribution: Lassen County.Within the public lands administered by the Alturas Field Office, known from fewer than 20 occurrences in Ash Valley and immediate area.
Habitat: On barren shallow volcanic soils in sagebrush-juniper to Jeffrey pine forest type from 5,000 to 6,000 feet (1524 to 1823 meters).
Flowering Period: June - September
Similar Plants: Grimy ivesia (Ivesia rhypara var. rhypara), but has 1-2 pistils, looser overlapping, densley canescent leaves, and occurs only in Nevada.
Status: BLM Sensitive, California Native Plant Society List 1B
Field Office: Alturas