Butte County Calycadenia
(Calycadenia oppositifolia )
Photo Copyright 1995 Arthur H. Bazell, M.D.
Description: Erect annual, with non to few branches, 8 to 12 in (20 to 30 cm) tall. Leaves entire, narrowly linear, opposite, 1/2 to 21/2 inches (1.3 to 6.5 cm) long and less than 1/10 inch (2.5 mm) wide. Infloresence whorled, in clusters along upper stem. Flowers 2 to 4, white, radiate, with 3 spreading lobes of equal length. Herbage with tack-shaped glands.
Distribution: Cascade Range Foothills and northern Sierra Nevada Foothills (Butte County).
Habitat: Open grassy flats and slopes (including roadcuts) in chaparral, foothill, woodland, and mix-conifer forest, on serpentine, granitic or volcanic sub-strates, at elevations of 800 to 2800 feet (250 to 900 m).
Flowering Period: Late April to July.
Status: BLM Sensitive, California Native Plant Society List 1B