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Erigeron piperianus
In Richland, Washington
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Erigeron
Species:	E. piperianus
Binomial name
Erigeron piperianus Cronquist

Erigeron piperianus is a species of flowering plant in the family Asteraceae known by the common name Piper's fleabane. It has been found only in the state of Washington in the northwestern United States.

Erigeron piperianus is a small perennial herb rarely more than 12 centimeters (4.8 inches) tall, producing a woody taproot. The leaves are linear to narrowly oblanceolate, are 2 to 4 cm long, and are sparsely covered in bristly appearing hairs (hispid). The plant produces many stems, but with only 1 flower head per stem. Each head has 25–40 yellow ray florets surrounding numerous yellow disc florets. The plant grows in dry, open, relatively flat land, often with sagebrush. It can be differentiated from the more widespread Erigeron linearis by its smaller size and the presence of sparse but prominent bristle-like hairs on the leaves, especially the lower part.

References

1. ^ Flora of North America, Erigeron piperianus Cronquist, 1947. Piper’s fleabane
2. Biota of North America Program 2014 county distribution map
3. Hitchcock, C.L. and Cronquist, A. 2018. Flora of the Pacific Northwest, 2nd Edition, p. 572. University of Washington Press, Seattle.

External links

• Photo of herbarium specimen at Missouri Botanical Garden, collected in Washington in 1935, isotype of Erigeron piperianus

• v
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• Erigeron
• Plants described in 1947
• Endemic flora of Washington (state)
• Taxa named by Arthur Cronquist
• Erigeron stubs