Erigeron acer

Erigeron acer
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Erigeron
Species:	E. acer
Binomial name
	Erigeron acer; L.
Synonyms
	Synonymy Erigeron acris L. ; Erigeron acre L. ; Erigeron polymorphus var. acris (L.) Clemente ; Inula acris (L.) Bernh. ; Trimorpha acris (L.) A.Gray ; Trimorpha vulgaris Cass. ;

Erigeron acer 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, northern, central, and southeastern Asia, and most of Europe.

Erigeron acer 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.

Subspecies and varieties:

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.

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