Collinsia antonina

San antonio collinsia, San Antonio Collinsia

Family: Plantaginaceae · Type: annual · Native

Conservation status: CNPS 1B.2

San antonio collinsia is a rare (CNPS 1B.2) California native annual found in northern Santa Lucia Mountains (Monterey County) in oak scrub margins on white shale scree at elevations of 250 to 400 meters. Flowering from March to April, this plant produces white flowers with purple lobes and delicate red-purple spots in the throat, measuring 4.5 to 8 millimeters long. Growing with compact stems 4 to 15 centimeters tall, it has a delicate, open branching structure with sparse glandular features. Its oblong leaves are crenate (scalloped), creating a soft, textured appearance along the plant's slender stems. The plant produces 6 to 8 seeds, contributing to its reproductive strategy in its specialized rocky habitat.

Habitat: Margins of oak scrub on white shale scree

Bloom period: Mar-Apr

Elevation: 250-400 m

Bioregions: n SCoRO (Monterey Co.).

California counties: Monterey

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.