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Snake River daisy, Snake River fleabane, white cushion fleabane
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leafy daisy, leafy fleabane
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| Perennials, 3–12 cm; taprooted, caudices branched. |
Perennials, 20–100 cm; taprooted, woody, with caudexlike branches 2–15 cm, or leafy stems arising directly from roots; single plants usually bowl-shaped, with up to a 65 cm lateral spread. |
erect, densely pilose to hirsute or villoso-hirsute (hairs usually slightly ascending, loose, often mixed in orientations, of unequal lengths, relatively thin-based), eglandular. |
erect or ascending (often purple, distal branches stiff, spreading-ascending, without axillary leaf tufts), glabrous or sparsely strigose (hairs straight, ascending-appressed), sometimes minutely glandular distally. |
mostly basal (persistent), (petioles prominently ciliate, hairs thick-based, spreading); blades linear to linear-oblanceolate, 20–40 × 1–2 mm, margins entire, faces finely hirsute, eglandular; cauline reduced, restricted to proximal 1/3 of stems. |
cauline; blades 1-nerved (often sharply folding in narrower forms), filiform or linear to oblanceolate, 10–65 × 1–5(–10) mm, relatively even-sized (mid and distal longer than internodes), margins entire, ciliate (cilia ascending-appressed, thick-based), faces glabrous or sparsely strigose, eglandular. |
5–7 × 8–16 mm. |
3.2–6.5 × 7–12(–14) mm. |
mostly 30–60; corollas usually white, sometimes fading pink, rarely blue, 5–10 mm, laminae loosely coiling. |
15–60; corollas white to blue, 5–15 mm, laminae not coiling or reflexing. |
2.8–4 mm. |
3.5–5.5 mm (throats slightly indurate, not inflated). |
in 2–3 series, hirsute to hirsuto-strigose, minutely glandular. |
in 3–5 series (outer: margins stramineous, with distal, greenish, rhomboid patches; inner: margins narrow, scarious), glabrous or moderately to densely strigoso-hirsute, sparsely and obscurely to densely and prominently minutely glandular. |
1. |
1 or 2–5 in loosely corymbiform arrays. |
1.8–2.2 mm, 2-nerved, faces moderately, loosely strigose; pappi: outer of setae, inner of 15–25 bristles. |
(1.8–)2.2–3 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 19–34 bristles. |
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| Flowering May–Aug. |
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| Gravelly and rocky slopes, ridges, sagebrush, grassland |
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| 600–2000(–2200) m [2000–6600(–7200) ft] |
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ID; OR; WA
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CA; nw Mexico
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Erigeron disparipilus is similar to E. nanus but less variable. The range of E. disparipilus barely contacts that of E. nanus in southeastern Idaho and they have different ecologies; blue rays of E. disparipilus in Owyhee County may indicate that hybridization occurs. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 5 (5 in the flora). Erigeron foliosus and its close relatives, including varieties, were mapped in detail by G. L. Nesom (1992b). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| 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. chrysopsidis, E. clokeyi, E. compactus, E. compositus, E. concinnus, E. consimilis, E. corymbosus, E. coulteri, E. cronquistii, E. davisii, E. decumbens, E. denalii, 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. 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 |
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1. Phyllaries 0.5–0.8 mm wide, margins usually thick or only narrowly scarious, abaxial faces sometimes sparsely and obscurely glandular | → 2 |
1. Phyllaries 0.8–1 mm wide, margins usually broadly scarious, abaxial faces densely and prominently glandular | → 3 |
2. Leaves (30–)40–60 mm, apices usually acute, often mostly with 1-directional orientation to one side of stems; inner phyllaries (4–)5–6 mm; ray corollas 8–13 mm | var. hartwegii |
2. Leaves 20–40(–50) mm, apices usually rounded, without a prominent 1-directional orientation; inner phyllaries 3.2–4.5 mm; ray corollas 6–10 mm | var. foliosus |
3. Phyllaries glabrous; leaves mostly 1–2 mm wide | var. confinis |
3. Phyllaries moderately to densely strigoso-hirsute; leaves mostly 2–4 mm wide | → 4 |
4. Leaf faces sparsely to moderately strigose; phyllaries with prominent, raised, orange-resinous midnerves; ray corollas 7–10 mm | var. franciscensis |
4. Leaf faces glabrous or glabrate except for ascending-ciliate margins and midveins; phyllaries usually without distinct, orange-resinous midnerves; ray corollas 10–15 mm | var. mendocinus |
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| Cronquist: Brittonia 6: 194. (1947) |
Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 309. (1840) |
| FNA vol. 20, p. 285. Treatment author: Guy L. Nesom. |
FNA vol. 20, p. 311. Treatment author: Guy L. Nesom. |
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OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
