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dwarf yellow fleabane
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Geiser's fleabane
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| Perennials, 3–15 cm; taprooted, caudices branched. |
Annuals, 5–40 cm; slenderly taprooted, caudices simple. |
erect (bracteate), evenly hispidulous to hirsute, usually minutely glandular. |
erect (herbaceous), sparsely spreading- to deflexed-villous proximally, sparsely strigose (hairs straight) distally, eglandular. |
mostly basal (in tufts, persistent) (petioles prominently ciliate, hairs spreading, thick-based); blades linear to linear-oblanceolate, 40–70(–90) × 1–3 mm, cauline reduced to bracts (bases relatively thin, not sheathing), margins entire, coarsely ciliate, faces hispidulous to loosely strigose. |
basal (usually not persistent) and cauline; basal blades oblanceolate to subspatulate, 15–60 × 4–11 mm; cauline gradually reduced distally (sometimes barely subclasping), margins entire or with 2–4 pairs of teeth or lobes, faces hirsute, eglandular. |
(3.5–)4.5–7.5 × 9–17 mm. |
2.5–3.5 × 5–7 mm. |
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44–70; corollas white, drying white to pink, 3–6 mm, laminae not coiling or reflexing. |
20–60; corollas tubular, lacking laminae, or laminae yellow (sometimes fading on drying and appearing whitish or creamy), 2–10 mm, not coiling or reflexing. |
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4–4.5 mm (throats tubular). |
1.2–1.6 mm (throats slightly indurate and inflated). |
in 2–3 series, sparsely hispid, minutely glandular. |
in 2–3 series, sparsely hirsute, sometimes minutely glandular. |
1. |
1–20 in diffuse arrays (branches from midstem distally, peduncles often dilated near heads). |
2–2.5 mm, 2-nerved, faces sparsely strigose (carpopodia yellowish); pappi: outer of inconspicuous setae, inner of 15–25 bristles. |
0.7–0.9 mm, 2-nerved, faces sparsely strigose; pappi: outer of scales, inner of 9–11 bristles. |
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Flowering late Mar–May(–Jun). |
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Sandy prairies, sandy loam, clay, fields, roadsides, fencerows |
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10–200 m (0–700 ft) |
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CA; ID; NV; OR; WA
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OK; TX |
Varieties 3 (3 in the flora). Intermediates between var. austiniae and var. chrysopsidis are formed in Oregon and Idaho, where their ranges overlap. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erigeron geiseri is characterized by its annual duration and slender taproots, relatively small size, lobed basal leaves, peduncles often dilated near the heads, obovate phyllaries with broad, scarious margins, and relatively small disc florets and cypselae, the latter with pappi of conspicuous scales and relatively few bristles. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
1. Ray (pistillate) laminae absent or not surpassing involucres; involucres 4.5–6 mm; stems hirsuto-villous | var. austiniae |
1. Ray laminae well developed (surpassing involucres); involucres 3.5–7.5 mm; stems hirsuto-villous or strigose | → 2 |
2. Involucres 3.5–5.5 mm; ray corolla laminae 4–7 mm; stems strigose to hirsuto-villous | var. brevifolius |
2. Involucres 5–6.5(–7.5) mm; ray corolla laminae (6–)8–11 mm; stems hirsuto-villous | var. chrysopsidis |
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| FNA vol. 20, p. 287. |
FNA vol. 20, p. 318. |
| Asteraceae > tribe Astereae > Erigeron |
Asteraceae > tribe Astereae > Erigeron |
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. 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. 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 |
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. 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. 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 |
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| Chrysopsis hirtella |
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| A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 1(2): 210. (1884) |
Shinners: Wrightia 1: 183. (1947) |
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OR
WA
CalFlora
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
