Erigeron acris

Erigeron acris is a widespread species of herbaceous flowering plant in the family Asteraceae. Common names include bitter fleabane and blue fleabane. The species is native to Canada, colder parts of the United States,^[3][4] northern, central, and southeastern Asia,^[5] and most of Europe.^[6]

Erigeron acris
Conservation status
Secure  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Erigeron
Species:	E. acris
Binomial name
Erigeron acris L.
Synonyms[2]
Erigeron polymorphus var. acris (L.) Clemente Inula acris (L.) Bernh. Trimorpha acris (L.) Gray Trimorpha vulgaris Cass.

Erigeron acris is a biennial or perennial herb up to 100 cm (40 inches) tall, producing a taproot and a woody rhizome. One plant can produce many small flower heads, each with pink, lilac, or occasionally white ray florets and yellow disc florets.^[5]

Subspecies and varieties:^[2]

• Erigeron acris subsp. acris
• Erigeron acris subsp. angulosus (Gaudin) Vacc.
• Erigeron acris subsp. arctophilus (Rech.f.) Rech.f.
• Erigeron acris subsp. asadbarensis (Vierh.) Rech.f.
• Erigeron acris subsp. botschantzevii
• Erigeron acris subsp. brachycephalus (H.Lindb.)
• Erigeron acris subsp. droebachensis (O.F.Müll.) Arcang.
• Erigeron acris subsp. kamtschaticus (DC.)
• Erigeron acris var. khasianus (Hook.f.)
• Erigeron acris subsp. lalehzaricus.
• Erigeron acris subsp. mesatlanticus (Maire) Maire
• Erigeron acris var. multicaulis (Wall. ex DC.)
• Erigeron acris subsp. phaeocephalus.
• Erigeron acris subsp. podolicus (Besser) Nyman
• Erigeron acris subsp. politu (Fr.) H.Lindb.
• Erigeron acris subsp. pycnotrichus (Vierh.) Grierson
• Erigeron acris subsp. staintonii.