UW Burke Herbarium species comparison

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Erigeron tweedyi

Erigeron linearis

desert yellow daisy, lineleaf fleabane
Habit Perennial from a stout woody base, 5-30 cm. tall, covered throughout with fine, grey, appressed hairs aligned in one direction.
Leaves

Bases of stems and basal leaves hardened and enlarged, straw-colored;

leaves linear, 1.5-9 cm. long and 0.5-3 mm. wide, mostly basal.
Flowers

Heads solitary or few on each stem, the disk 8-13 mm. wide;

involucre 4-7 mm. high;

rays 15-45, yellow, 4-11 mm. long; disk corollas 3.5-5.3 mm. long, yellow;

pappus of 10-20 bristles and some outer scales.

Erigeron tweedyi

Erigeron linearis
Flowering time May-July
Habitat Dry, open, often rocky areas at low to middle elevations.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in Washington; southern British Columbia to California, east to Montana, Wyoming, and Utah.
[WildflowerSearch map]
[BONAP county map]
Origin Native
Conservation status Not of concern
Sibling taxa
E. acris, E. aliceae, E. annuus, E. aureus, E. basalticus, E. bloomeri, E. caespitosus, E. chrysopsidis, E. compositus, E. corymbosus, E. davisii, E. disparipilus, E. divergens, E. eatonii, E. elatus, E. filifolius, E. flettii, E. glacialis, E. howellii, E. inornatus, E. karvinskianus, E. leibergii, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. philadelphicus, E. piperianus, E. poliospermus, E. pumilus, E. salishii, E. speciosus, E. strigosus, E. subtrinervis
E. acris, E. aliceae, E. annuus, E. aureus, E. basalticus, E. bloomeri, E. caespitosus, E. chrysopsidis, E. compositus, E. corymbosus, E. davisii, E. disparipilus, E. divergens, E. eatonii, E. elatus, E. filifolius, E. flettii, E. glacialis, E. howellii, E. inornatus, E. karvinskianus, E. leibergii, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. philadelphicus, E. piperianus, E. poliospermus, E. pumilus, E. salishii, E. speciosus, E. strigosus, E. subtrinervis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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