The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

one-stem fleabane

Bloomer's fleabane

Habit Plants perennial, 3–15 cm; fibrous-rooted, rhizomatous, caudices branched or not. Plants perennial, 3–22 cm; taprooted with branching caudices.
Stems

erect, sparsely to moderately villous, eglandular.

erect, glabrous to densely strigose, eglandular.

Basal leaves

persistent, oblanceolate to spatulate, 50–350 × 30–90 mm;

margins entire, sometimes moderately ciliate;

surfaces glabrous to glabrate.

persistent, linear to very narrowly oblanceolate, 10–80 × 0.7–3 mm, bases white-indurate, often tinged with purple;

margins entire;

surfaces glabrous to densely strigose, eglandular.

Cauline leaves

obovate to linear, abruptly reduced distally;

surfaces usually hirsute.

linear, 1–5 × 0.5–2 mm, abruptly reduced.

Involucres

3–7 × 8–16 mm.

5–8 × 6–16 mm.

Ray florets

30–50+, lavender to purple;

rays 5–10 × 0.6–2.2 mm.

0.

Disc florets

2–3 mm.

corollas 4–6 mm; pale to bright yellow;

lobes often purple-tipped.

Phyllaries

in 2 series;

margins usually ragged;

surfaces moderately to densely villous.

in 2–3 series, with dark medial area;

surfaces glabrous to densely woolly-villous, minutely glandular to eglandular.

Fruits

1–2 mm, sparsely strigose;

inner pappi of numerous barbellate bristles.

3–5 mm, glabrous with few sericeous hairs at distal ends below inner pappi;

inner pappi of numerous barbellate bristles.

Heads

1, radiate.

1, discoid.

Erigeron simplex

Erigeron bloomeri

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Rocky areas, meadows. Flowering Jul–Aug. 2400–3000 m. BW. ID, NV; northeast to MT, east to WY, southeast to CO, NM. Native.

Western United States. 2 varieties.

Source Flora of Oregon, volume 2, page 261
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 253
James Riser, Stephen Meyers
Sibling taxa
E. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, E. cervinus, E. chrysopsidis, E. compositus, E. corymbosus, E. coulteri, E. decumbens, E. disparipilus, E. divergens, E. eatonii, E. elegantulus, E. filifolius, E. foliosus, E. glacialis, E. glaucus, E. howellii, E. inornatus, E. karvinskianus, E. klamathensis, E. latus, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. petrophilus, E. philadelphicus, E. poliospermus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. tener, E. vagus
E. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. cascadensis, E. cervinus, E. chrysopsidis, E. compositus, E. corymbosus, E. coulteri, E. decumbens, E. disparipilus, E. divergens, E. eatonii, E. elegantulus, E. filifolius, E. foliosus, E. glacialis, E. glaucus, E. howellii, E. inornatus, E. karvinskianus, E. klamathensis, E. latus, E. linearis, E. lonchophyllus, E. nivalis, E. oreganus, E. peregrinus, E. petrophilus, E. philadelphicus, E. poliospermus, E. pumilus, E. simplex, E. speciosus, E. stanselliae, E. strigosus, E. tener, E. vagus
Subordinate taxa
E. bloomeri var. bloomeri, E. bloomeri var. nudatus
Synonyms Erigeron grandiflorus
Web links