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dwarf yellow fleabane

short-rayed fleabane, spear-leaved fleabane

Habit Plants perennial, 3–20 cm; taprooted, usually with many woody, branching caudices. Plants biennial or short-lived perennial, 4–33 cm; usually fibrous-rooted, caudices simple.
Stems

erect; hirsute, eglandular to minutely glandular.

erect, sparsely to densely hirsute, eglandular or occasionally with densely minute glands.

Basal leaves

persistent in dense clusters, linear to narrowly oblanceolate, 10–80 × 1–3 mm;

margins entire with hispid hairs;

surfaces hirsute to hispid, sometimes nearing strigose.

persistent, oblanceolate to spatulate, 10–100 × 4–10 mm;

margins entire, often with spreading cilia;

surfaces glabrous to moderately hirsute or strigose.

Cauline leaves

abruptly reduced to (0)1–3 linear bracts.

narrowly elliptic, oblong, oblanceolate to linear, 10–100 × 1–5 mm, reduced distally, bases often clasping;

surfaces glabrous to moderately hirsute or strigose.

Involucres

4–7 × 10–16 mm.

4–7 × 5–11 mm.

Ray florets

20–60;

corollas with well-developed yellow rays, 4–8 × 0.5–2 mm, or tubular and short, or rays lacking.

40–100, white to pink;

rays 2–5 × 0.2–0.4 mm.

Disc florets

corollas 4–5 mm.

corollas 3–5 mm.

Phyllaries

in 2–3 series, sparsely to moderately hispid-villous, often minutely glandular.

in 2–3 series;

surfaces sparsely to densely hirsute, glandular or eglandular.

Fruits

2–3 mm, moderately strigose;

inner pappi of numerous barbellate bristles.

1.5–2.5 mm, sparsely to moderately strigose;

inner pappi of numerous barbellate bristles.

Heads

1, radiate or disciform.

1–10 in raceme-like arrays, radiate.

2n

=18.

Erigeron chrysopsidis

Erigeron lonchophyllus

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

Western United States. 3 varieties.

Floodplains, lakesides, gravel bars, roadsides, marshes, seeps. Flowering Jun–Aug. 800–2300 m. BR, BW, Casc, ECas, Lava, Owy. CA, ID, NV, WA; north to AK, northeast to Nunavut, east to Quebec, southeast to NM. Native.

Source Flora of Oregon, volume 2, page 254
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 258
James Riser, Stephen Meyers
Sibling taxa
E. acris, E. aliceae, E. annuus, E. aphanactis, E. aureus, E. bloomeri, E. cascadensis, E. cervinus, 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. 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. 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. chrysopsidis var. austiniae, E. chrysopsidis var. brevifolius, E. chrysopsidis var. chrysopsidis
Synonyms Trimorpha lonchophylla
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