Calflora Taxon Report
Heracleum maximum W. Bartram
Common cow parsnip
Heracleum maximum is a perennial herb that is native to California, and also found elsewhere in North America and beyond.

Synonyms  
Heracleum lanatumPLANTS
Heracleum sphondyliumICPN
Heracleum sphondylium ssp. montanumPLANTS
Heracleum sphondylium var. lanatumPLANTS
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
The blue points on the map indicate observations in Calflora.
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Accepted by: JEPS + POWO + PLANTS
Jepson eFlora section:
eudicot
USDA PLANTS group:
Dicot

Arid West: Occurs usually in wetlands, occasionally in non wetlands
Mountains, Valleys and Coast: Equally likely to occur in wetlands and non wetlands
Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland, many plant communities

[Wikipedia] Ecology: The species is widely recognized as a valuable pasture plant for cows, sheep, and goats. It is also known to be important in the diets of numerous wild animals, especially bears, both grizzly bears and black bears.[21] It is a host plant for the black swallowtail butterfly (Papilio polyxenes), short-tailed swallowtail butterfly (Papilio brevicauda), old world swallowtail butterfly (Papilio machaon), anise swallowtail butterfly (Papilio zelicaon), and the moths Eupithecia tripunctaria, Papaipema harrisii, Papaipema impecuniosa, Agonopterix clemensella, Agonopterix flavicomella, and Depressaria pastinacella.[ (link added by Mary Ann Machi)

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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