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Klamath fleabane

northern daisy

Habit Plants perennial, 5–25 cm; taprooted, caudices branching. Plants biennial or short-lived perennial, 4–20 cm; fibrous-rooted to weakly taprooted, caudices branched.
Stems

erect to decumbent-ascending; hirsute, eglandular;

hairs usually spreading and slightly reflexed.

erect, sparsely to moderately hirsute, minutely glandular.

Basal leaves

withering by flowering.

persistent, oblanceolate to spatulate, 10–100 × 3–15 mm;

margins entire, ciliate;

surfaces glabrous to sparsely strigose.

Cauline leaves

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

margins entire;

surfaces moderately to densely hirsute, eglandular.

oblanceolate, elliptic, or lanceolate, 5–50 × 1–5 mm, reduced distally;

surfaces glabrous or sparsely strigose.

Involucres

4–6 × 8–14 mm.

4–7 × 7–13 mm.

Ray florets

20–40, lavender to purple;

rays 4–6 × 0.7–2 mm.

in 2 series, outer of 30–70 erect, filiform rays, 0.3–0.5 × 3–6 mm, white to light pink, inner of tubular florets; fewer than outer series.

Disc florets

corollas 3.5–5 mm.

corollas 4–6 mm.

Phyllaries

in 2–3 unequal series;

surfaces glabrous to very sparsely hirsute, densely minutely glandular.

in 2–3 series;

surfaces nearly glabrous to sparsely hirsute, occasionally villous basally, densely glandular.

Fruits

2–3 mm, sparsely to densely strigose;

inner pappi of numerous barbellate bristles.

1.5–2.5 mm, sparsely to moderately strigose;

inner pappi of numerous barbellate bristles.

Heads

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

1–10 in corymb-like arrays, radiate.

2n

=18.

Erigeron klamathensis

Erigeron nivalis

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

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

Gravelly areas, mossy rocks, lava beds, talus slopes, cliffs. Flowering May–Aug. 1500–2500 m. BW, Casc, ECas. CA, ID, WA; north to AK, northeast to Northwest Territories, east to WY, southeast to NM. Native.

Source Flora of Oregon, volume 2, page 258
James Riser, Stephen Meyers
Flora of Oregon, volume 2, page 259
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. 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. 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 breweri, Erigeron breweri var. klamathensis Erigeron acris var. debilis, Trimorpha acris var. debilis
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