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diffuse daisy, spreading fleabane

Klamath fleabane

Habit Plants annual or short-lived perennial, 12–50+ cm; taprooted, with short, branching caudices. Plants perennial, 5–25 cm; taprooted, caudices branching.
Stems

erect, ascending to decumbent, densely pilose to sparsely hirsute, minutely glandular at least distally.

erect to decumbent-ascending; hirsute, eglandular;

hairs usually spreading and slightly reflexed.

Basal leaves

persistent or withering by flowering, spatulate, 20–80 × 5–10 mm;

margins entire or with 1–2 coarse teeth;

surfaces moderately to densely strigose, usually eglandular.

withering by flowering.

Cauline leaves

numerous and well developed, elliptic, obovate, or linear, 5–30 × 1–4 mm, usually slightly reduced distally;

surfaces densely strigose to villous.

oblong to narrowly oblanceolate, 10–30 × 1–4 mm, slightly reduced distally or not;

margins entire;

surfaces moderately to densely hirsute, eglandular.

Involucres

2–4 × 6–10 mm.

4–6 × 8–14 mm.

Ray florets

75–150, light purple to lavender;

rays 2–5 × 0.25–0.6 mm.

20–40, lavender to purple;

rays 4–6 × 0.7–2 mm.

Disc florets

corollas 2–3 mm.

corollas 3.5–5 mm.

Phyllaries

in 2–3 series, usually with dark green or brown medial area and lighter colored stripe;

surfaces moderately to densely hirsute or strigose, moderately to densely glandular.

in 2–3 unequal series;

surfaces glabrous to very sparsely hirsute, densely minutely glandular.

Fruits

0.75–1 mm, glabrous to very sparsely strigose;

inner pappi of numerous barbellate bristles.

2–3 mm, sparsely to densely strigose;

inner pappi of numerous barbellate bristles.

Heads

1–20+ in corymb-like arrays, radiate.

1–4 in loose corymb-like arrays, radiate.

2n

=18, 27, 36.

Erigeron divergens

Erigeron klamathensis

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

Dry open areas, roadsides, streambanks. Flowering May–Sep. 50–2200 m. BR, BW, Casc, Col, ECas, Est, Lava. CA, ID, WA; north to British Columbia, northeast to Alberta, east to SD, southeast to TX, south to Mexico. Native.

Rocky areas, ridges, crevices. Flowering Jun–Sep. 500–1500 m. Sisk. CA. Native.

Source Flora of Oregon, volume 2, page 255
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. chrysopsidis, E. compositus, E. corymbosus, E. coulteri, E. decumbens, E. disparipilus, 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. 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
Synonyms Erigeron divergens var. divergens Erigeron breweri, Erigeron breweri var. klamathensis
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