Erigeron acris

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 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 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.

References

1. NatureServe (3 January 2025). "Erigeron acris". NatureServe Explorer. Arlington, Virginia. Retrieved 12 January 2025.
2. "Erigeron acris L." Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 12 January 2025.
3. Flora of North America, Erigeron acris Linnaeus, Sp. Pl. 2: 863. 1753. Fleabane
4. Biota of North America Program, 2014 state-level distribution map, Erigeron acris
5. Flora of China, Erigeron acris Linnaeus, Sp. Pl. 2: 863. 1753. 飞蓬 fei peng
6. Altervista Flora Italiana, Cespica acre, Erigeron acer L.