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

buff daisy, cushion daisy, cushion fleabane, hairy-seed daisy, hairy-seed fleabane, Kittitas fleabane, purple-cushion fleabane

Habit Perennials, 3–15 cm; taprooted, caudices simple or with relatively short and thick branches.
Stems

erect, sometimes branched, hirsute (hairs unequal), ± minutely glandular.

Leaves

mostly basal (persistent; petioles prominently ciliate, hairs spreading, thick-based);

blades narrowly oblanceolate to spatulate, (20–)30–80 × 2–4(–12) mm, cauline sometimes continuing distally to about midstem, margins entire, usually ciliate, sometimes coarsely so, faces sparsely to densely hirsute, sometimes minutely glandular.

Heads

1(–3) (from branches at or proximal to midstem).

Involucres

5–9 × 9–20 mm.

Ray florets

15–45 or 0;

corollas usually pink to bluish purple, sometimes white, 5–14 mm, laminae coiling.

Disc corollas

(3.5–)4–5.5 mm.

Phyllaries

in 2–3 series, sparsely to densely hirsuto-villous to hirsute, minutely glandular.

Cypselae

2.5–3 mm, 2-nerved, faces densely strigoso-sericeous (obscured);

pappi: outer of setae, inner of 20–30 bristles.

Erigeron poliospermus

Discussion

Varieties 3 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Distribution
from FNA
ID; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
Parent taxa Asteraceae > tribe Astereae > Erigeron
Sibling taxa
E. abajoensis, E. acomanus, E. acris, E. aequifolius, E. algidus, E. aliceae, E. allocotus, E. alpiniformis, E. anchana, E. annuus, E. aphanactis, E. arenarioides, E. argentatus, E. arisolius, E. arizonicus, E. asperugineus, E. aureus, E. barbellulatus, E. basalticus, E. bellidiastrum, E. bigelovii, E. biolettii, E. blochmaniae, E. bloomeri, E. breweri, E. caespitosus, E. calvus, E. canaani, E. canus, E. cascadensis, E. cavernensis, E. cervinus, E. chrysopsidis, E. clokeyi, E. compactus, E. compositus, E. concinnus, E. consimilis, E. corymbosus, E. coulteri, E. cronquistii, E. davisii, E. decumbens, E. denalii, E. disparipilus, E. divergens, E. eatonii, E. elatior, E. elatus, E. elegantulus, E. elmeri, E. engelmannii, E. evermannii, E. eximius, E. filifolius, E. flabellifolius, E. flagellaris, E. flettii, E. foliosus, E. formosissimus, E. garrettii, E. geiseri, E. glabellus, E. glacialis, E. glaucus, E. goodrichii, E. gracilis, E. grandiflorus, E. greenei, E. heliographis, E. hessii, E. howellii, E. humilis, E. hyperboreus, E. hyssopifolius, E. inornatus, E. jonesii, E. kachinensis, E. karvinskianus, E. klamathensis, E. kuschei, E. lackschewitzii, E. lanatus, E. lassenianus, E. latus, E. leibergii, E. leiomerus, E. lemmonii, E. linearis, E. lobatus, E. lonchophyllus, E. maguirei, E. mancus, E. maniopotamicus, E. mariposanus, E. melanocephalus, E. miser, E. modestus, E. muirii, E. multiceps, E. nanus, E. nauseosus, E. nematophyllus, E. neomexicanus, E. nivalis, E. ochroleucus, E. oreganus, E. oreophilus, E. ovinus, E. oxyphyllus, E. pallens, E. parishii, E. parryi, E. peregrinus, E. petrophilus, E. philadelphicus, E. pinnatisectus, E. piperianus, E. piscaticus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, E. pulcherrimus, E. pumilus, E. purpuratus, E. pygmaeus, E. quercifolius, E. radicatus, E. reductus, E. religiosus, E. rhizomatus, E. robustior, E. rybius, E. rydbergii, E. salishii, E. salmonensis, E. sanctarum, E. saxatilis, E. sceptrifer, E. scopulinus, E. serpentinus, E. sionis, E. sivinskii, E. sparsifolius, E. speciosus, E. strigosus, E. subglaber, E. subtrinervis, E. supplex, E. tenellus, E. tener, E. tenuis, E. tracyi, E. trifidus, E. tweedyi, E. uintahensis, E. uncialis, E. uniflorus, E. untermannii, E. ursinus, E. utahensis, E. vagus, E. velutipes, E. vernus, E. versicolor, E. vetensis, E. vicinus, E. vreelandii, E. watsonii, E. wilkenii, E. yukonensis
Subordinate taxa
E. poliospermus var. cereus, E. poliospermus var. disciformis, E. poliospermus var. poliospermus
Key
1.Stems branched at or proximal to midstem; basal leaves and branches originating on elongate internodes from proximal 1–6 cm of primary stems; stems and involucres glabrous or sparsely hirsute, densely minutely glandularE. poliospermus var. cereus
1.Stems simple; basal leaves and stems originating from compressed nodes at caudex apices; stems and involucres densely hirsute, sparsely minutely glandular→ 2
2.Rays 0E. poliospermus var. disciformis
2.Rays 15–45E. poliospermus var. poliospermus
Name authority A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 1(2): 210. (1884)
Source Flora of North America vol. 20, p. 285.
Web links