Heracleum maximum Bartram

A very large-leaved umbellifer found throughout the United States except in the southeast. In New Mexico, it is found in montane coniferous forest.

Plant habit at San Pedro Parks, Jemez Mountains, Rio Arriba County, New Mexico, 25 Jun 2010.

An inflorescence at San Pedro Parks, 25 Jun 2010.

A basal leaf at San Pedro Parks, 25 Jun 2010.

Sheath of an upper cauline leaf at San Pedro Parks, 25 Jun 2010.

Flowers at San Pedro Parks, 25 Jun 2010.

Abaxial view of an umbellet, showing the involucel, 25 Jun 2010.