Maytenus boaria (mayten) is a shrub/tree (family Celastraceae) with green to white flowers and narrow leaves found in the San Francisco Bay area and coastal ranges of California. It is native to Argentina and Chile. It favors grasslands and scrub and chaparral habitat. It spreads via root suckers and seeds. Birds help disperse the seeds.

Nardus stricta (matgrass) is a perennial grass (family Poaceae) that can grow to be more than 1 foot tall and is found in the southwestern ranges of Oregon. It is native to Eastern Europe. It favors grasslands, wetlands, and bog and marsh habitat. It reproduces mostly through transport of tufts in mud clinging to the […]

Nothoscordum gracile (false garlic, false onionweed) is a perennial herb/ (family Liliaceae) with white flowers and long narrow grasslike leaves which is found in the central western ranges and south coast ranges of California. It is native to South America. False garlic grows in grasslands and spreads via seed and underground bulblets. Seeds are dispersed […]

Oncosiphon pilulifer (stinknet) is a strongly-scented annual herb (family Asteraceae) with round yellow flowers and finely dissected leaves found in the south coast and desert ranges of Southern California. It is native to South Africa. It favors dunes and scrub and chaparral habitat. It spreads via seeds which travel through human activities and machinery. Stinknet […]

Onopordum illyricum (Illyerian thistle) is a biennial herb/ (family Asteraceae) with purple flowers and prickly toothed leaves found in the central coast ranges of California. It is native to southeastern Europe. It favors grasslands and riparian and bottomland habitat. It spreads via seeds equipped with fine hairs. The seeds spread via wind, water, wool, vehicles […]

Orobanche aegyptiaca (Egyptian broomrape) is a perennial herb/ (parasitic) (family Orobanchaceae) with purple flowers and tiny leaves found in the central valley of California. It is native to the Middle East. It grows in grasslands. It reproduces via seeds which are carried by water, wind, animals and man.

Paraserianthes lophantha (plume Acacia) is a shrub/tree (family Fabaceae) with green-yellow flowers and large, finely dissected leaves found in the San Francisco Bay area, coastal ranges and the Channel Islands of California. It is native to southeastern Asia and southwestern Australia. It favors woodlands, dunes, grasslands, and riparian and bottomland habitat. It reproduces by seeds […]

Parthenium hysterophorus (Santa Maria feverfew) is a herb (family Asteraceae) with white flowers and lobed leaves found in the south coast ranges of California. It is native to the American tropics. It favors grasslands and riparian and bottomland habitat. It is a prolific seed producer. Its seeds travel via wind, water, birds, vehicles, farm machinery […]

Paspalum urvillei (Vasey’s grass) is a perennial grass (family Poaceae) that can grow up to 6 feet tall found in the Central Valley and central and south coast ranges of California. It is native to South America. It favors grasslands and riparian and bottomland habitat. It spreads by seed and by rhizome. The seeds are […]

Paspalum vaginatum (seashore Paspalum) is a perennial grass (family Poaceae) that can grow to approximately 20 inches tall and is found in the Sonoran Desert and south coast ranges of California. It is native to southeastern North America, other parts of tropical Central and South America and Africa. It favors dunes and bog and marsh […]