Native to California and Oregon. Related to the invasive non-native Harding Grass (P. aquatica), but much less aggressive. The California Native Plant Society, in Calscape.org, says" "Phalaris californica is an uncommon species of grass known by the common name California canarygrass. It is native to the coastal hills and mountains of southern Oregon and northern and central California, where it grows mainly in moist areas, such as meadows. It is a perennial grass reaching maximum heights between one half and 1.5 meters. The flower cluster is up to 5 centimeters long and 3 wide, roughly oval, pointed at the tip and truncated at the base. The spikelets are hairy and as they ripen they turn shades of magenta to bright pink." Jasper Ridge Biological Preserve below the Bird Transect Trail, 8/21/2021, 10:05 am.