San Diego Thornmint
(Acanthomintha ilicifolia )
Photo Copyright Roxanne Bittman and CNPS
Description: Annual herb with stems 2 - 6 inches (5-15cm) long. Leaves oval - round with serrate edges, 1/4 - 5/8 inches (5-15mm) long. Inflorescence is head-like with egg-shaped, spiny-edged bracts, 1/4 - 3/8 inch (7-9mm) long. The flower's calyx is about 1/4 inch (5mm) long, and the petals are white with occational rose-tinged lobes, and 1/2 inch (12mm) long. The anthers and styles are without hairs. The fruit is smooth and egg-shaped.
Habitat: Clay depressions on mesas and slopes, coastal sage scrub, chaparral, vernal pools. Elevation 32 - 2992 feet.
Flowering Period: Blooms April - June.
Status: Federal Threatened, California State Endangered, California Native Plant Society List 1B
Field Office: Palm Springs