It is extracted from a seed of a sunflower called "Helianthus annuus". The species is economically important on "Helianthus annuus" in North America. This enzyme is isolated from "Helianthus annuus" (sunflower). "Helianthus deserticola" is a daughter species of the species "Helianthus annuus" and "Helianthus petiolaris". They grew squash, sunflower ("Helianthus annuus"), sumpweed, goosefoot, knotweed, and maygrass. Wild "Helianthus annuus" is a widely branched annual plant with many flower heads. The sunflower seed is the fruit of the sunflower ("Helianthus annuus"). Sunflower oil is the non-volatile oil pressed from the seeds of sunflower ("Helianthus annuus"). The larvae feed on Parish goldeneye ("Bahiopsis parishii") and occasionally on sunflowers ("Helianthus annuus").