UW Burke Herbarium species comparison

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Erigeron filifolius

Erigeron lonchophyllus

Peck's threadleaf fleabane

short-rayed fleabane, spear-leaved fleabane
Habit Perennial from a taproot and branched, short woody base, 1-5 dm. tall, the stem densely covered with fine, appressed hairs aligned in one direction. Weak-rooted biennial or short-lived perennial, erect, 2-60 cm. tall, the stem covered with spreading, short, stiff, blunt hairs.
Leaves

Leaves both basal and cauline, linear or linear-filiform, 1-8 cm. long and 0.3-3 mm. wide, of uniform width.

Basal leaves oblanceolate, up to 15 cm. long and 12 mm. wide;

cauline leaves linear, often elongate.
Flowers

Heads solitary or several;

involucre 4-6 mm. high, with fine, soft hairs or small glands or both;

rays 15-125, blue, pink or white, 3-13 mm. long and 1-2 mm. wide;

pappus of 20-30 simple hairs.

Peduncles erect, the lower heads surpassed by the subtending leaves, or the heads solitary;

involucre 4-9 mm. high, hairy but not glandular, its bracts imbricate, pointed and purple-tipped; pistillate flowers numerous, with erect, inconspicuous white rays 2-3 mm. long and 0.25-0.5 mm. wide; disk corollas 3.5-5 mm. long, shorter than the 20-30 pappus bristles.

Erigeron filifolius

Erigeron lonchophyllus
Flowering time May-July July-August
Habitat Sagebrush plains, dry slopes, and grasslands. Streambanks, bogs, ponds, wet meadows, ditches, gravelly places along roads at middle to high elevations.
Distribution
Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east to Montana, Idaho, and Utah.
[WildflowerSearch map]
[BONAP county map]
Occurring east of the Cascades crest in northern Washington; Alaska to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and eastern Canada.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern 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. 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. linearis, 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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