Erigeron caespitosus

Erigeron caespitosus is a North American species of flowering plants in the family Asteraceae known by the common name tufted fleabane. It is native to western Canada (Yukon, British Columbia, Alberta, Saskatchewan, Manitoba) and the United States (Alaska and mountains of the western United States, primarily the Rockies, as far south as Arizona and New Mexico)^[3][4]

Erigeron caespitosus
Conservation status
Secure  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Erigeron
Species:	E. caespitosus
Binomial name
Erigeron caespitosus Nutt.
Synonyms[1]
Erigeron caespitosum Nutt.[2] Diplopappus grandiflorus Hook. Erigeron caespitosus var. grandiflorus (Hook.) Torr. & A.Gray Erigeron caespitosus var. laccoliticus M.E.Jones Erigeron canescens (Hook.) Torr. & A.Gray 1841 not Hook. & Arn. 1836 Erigeron subcanescens Rydb.

Erigeron caespitosus is a perennial herb up to 30 cm (12 inches) tall, forming clumps over a taproot and usually covered with stiff hairs. One plant will produce numerous flower heads in groups of 1–4 at the ends of upper branches. Each head contains as many as 100 white or blue ray florets surrounding many small yellow disc florets.^[5]

References

1. The Plant List, Erigeron caespitosus Nutt.
2. Tropicos, Erigeron caespitosus Nutt.
3. Biota of North America Program 2014 county distribution map
4. Biota of North America 2014 state-level distribution map
5. Flora of North America, Erigeron caespitosus Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 307. 1840. Tufted fleabane