Sagittaria montevidensis subsp. calycina

Family: Alismataceae · Type: annual · Native

Sagittaria montevidensis is a California native annual found in the Great Valley, San Francisco Bay Area (Sonoma County), and central Southern California (Los Angeles County) in ponds and rice fields at elevations below 300 meters. Flowering from July to August, this plant produces white petals with a distinctive green-yellow spot at the base of each flower. Growing with erect to ascending petioles, it develops sagittate leaves 5 to 15 centimeters long with basal lobes approximately equal to the terminal blade. Its leaves feature distinctive arrow-shaped blades that emerge from the water with upright stems. The fruit develops with oil-streaked sides and a small spreading beak measuring 0.4 to 0.8 millimeters long.

Habitat: Ponds, rice fields

Bloom period: Jul-Aug

Elevation: < 300 m

Bioregions: GV, SnFrB (Sonoma Co.), c SCo (Los Angeles Co.)

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