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shaggy daisy, shaggy fleabane, tall annual willowherb

basin fleabane, Ojo Alamo fleabane

Habit Perennials, 5–30(–50) cm; taprooted, caudices with relatively short and thick branches. Perennials, (5–)7–30(–35) cm; taprooted, caudex branches relatively short and thick.
Stems

erect, hirsute to hispido-hirsute (often with slightly deflexed hairs), minutely to stipitate glandular.

erect (gray-green), moderately to densely gray-green-strigose (hairs white, stiff), eglandular.

Leaves

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

basal blades oblanceolate to narrowly oblanceolate, 20–80 × 1–4(–5) mm, margins entire, faces hispid to hispido-hirsute, little, if at all, glandular;

cauline on distal 1/2–3/4 of stems, blades becoming linear-lanceolate, little reduced distally.

basal (persistent) and cauline (gray-green; petiole bases broadened or not, not thickened and whitish-indurate);

basal blades linear to narrowly oblanceolate, 10–70 × 1–3(–5) mm;

cauline little reduced for about 1/2–3/4 stems, margins entire, faces moderately to densely strigose (hairs white, stiff), eglandular.

Involucres

4–7 × 7–15 mm.

5–7(–9) × 10–16(–20) mm.

Ray florets

50–100;

corollas white to pink, less commonly bluish, 6–15 mm, laminae reflexing.

25–60;

corollas white to pink or bluish, 8–15 mm, laminae coiling.

Disc corollas

3–5 mm (throats distinctly indurate and inflated, glabrous or sparsely puberulent with glandular-viscid, hairs blunt).

3.8–5.7 mm.

Phyllaries

in 2–4 series (midvein region orange to yellowish), hirsute to hispido-hirsute, minutely glandular.

in 2–3(–4) series, hirsute to villoso-hirsute, minutely glandular.

Heads

1–5(–50).

1.

Cypselae

1.4–1.8 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae or subulate scales (0.1–0.3 mm), inner of 12–27 bristles.

2.5–3 mm, (2–)4(–5)-nerved, faces densely strigoso-sericeous;

pappi: outer sometimes of setae or bristles (to 0.5 lengths of inner), inner of 32–50 bristles.

Erigeron pumilus

Erigeron pulcherrimus

Phenology Flowering May–Jun.
Habitat Clays, clay-silts, and gravelly soils, saline, gypseous, and seleniferous, commonly in salt desert scrub, pinyon-juniper
Elevation 1300–2100 m (4300–6900 ft)
Distribution
from FNA
CA; CO; ID; KS; MT; ND; NE; NV; OR; SD; UT; WA; WY; AB; BC; SK
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; NM; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

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

Key
1. Pappi: outer of coarse bristles or setiform scales, inner of 12–20 bristles; rays usually pink, sometimes white; indurate portion of disc corollas relatively dull, glabrous or slightly puberulent
var. intermedius
1. Pappi: outer of inconspicuous, well-developed setae, inner of 15–27 bristles; rays white; indurate portion of disc corollas shiny, glabrous
var. pumilus
Source FNA vol. 20, p. 288. FNA vol. 20, p. 296.
Parent taxa Asteraceae > tribe Astereae > Erigeron 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. poliospermus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, E. pulcherrimus, 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
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. poliospermus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, 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. pumilus var. intermedius, E. pumilus var. pumilus
Synonyms E. bistiensis, E. pulcherrimus var. wyomingia
Name authority Nuttall: Gen. N. Amer. Pl. 2: 147. (1818) A. Heller: Bull. Torrey Bot. Club 25: 200, plate 340. (1898)
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