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Brewer's daisy, Brewer's fleabane

rhizome fleabane, Zuni fleabane

Habit Perennials, 7–75 cm; taprooted (taproots usually not collected, often weakly developed), roots and caudices woody, branches rhizomelike (3–15 cm; fibrous-rooted), relatively slender, leafless, ascending. Perennials, 25–45 cm; rhizomatous, fibrous-rooted, roots clustered, relatively thick (sometimes forming clumps to ca. 30 cm diam.), rhizomes or rhizomelike caudex branches creeping-ascending, slender, scale-leaved, without well-defined central axes.
Stems

usually ascending, sometimes prostrate to procumbent or decumbent (var. jacinteus) (often purple, distal branches stiff, spreading-ascending), hispid (hairs spreading-deflexed, 0.1–0.4 mm), mostly eglandular.

erect, simple or 1–3-branched from near bases (secondary stems more densely leafy), sparsely strigose to strigoso-hirsutulous, sometimes sparsely minute-glandular.

Leaves

cauline; (ascending) blades narrowly oblong-lanceolate to narrowly obovate, 10–40 × 2–5 mm, margins entire, relatively evenly spaced and sized, hispid, mostly eglandular.

cauline;

proximal blades narrowly oblong to oblong-oblanceolate, quickly linear, 50–100 × 1–3 mm, relatively even-sized distally, margins entire, ciliate, faces glabrous, eglandular.

Involucres

mostly 4–6 × 9–14 mm.

6–7 × 13–16 mm.

Ray florets

20–62;

corollas white or pink, often drying blue, 4–7 mm, laminae weakly coiling.

25–45;

corollas white with abaxial lilac midstripe, 6–7 mm, laminae not coiling or reflexing.

Disc corollas

3.5–5.5 mm (throats slightly indurate, not inflated).

4.8–5.6 mm.

Phyllaries

in 3–5 series (all but outermost with stramineous margins and distal, greenish-herbaceous, narrowly rhomboid areas), strigoso- to hispido-hirsute or essentially glabrous, densely minutely glandular.

in 4–5 series, sparsely strigose, sometimes sparsely minute-glandular.

Heads

1 or 2–5(–10) in loosely corymbiform arrays.

1 (rarely 2–3 from proximal branches).

Cypselae

2–3 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of (15–)20–35(–50) bristles.

3.5–4.5 mm, 5–6-nerved, faces glabrous;

pappi: outer of setae, inner of 25–35 bristles.

2n

= 18.

Erigeron breweri

Erigeron rhizomatus

Phenology Flowering May–Jul.
Habitat Nearly barren detrital clay hillsides or benches, shale-derived soils (often seleniferous) of the Chinle or Baca formations, usually n- or e-facing slopes, ponderosa pine and piñon-juniper woodlands
Elevation 2200–2400 m (7200–7900 ft)
Distribution
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NM
[BONAP county map]
Discussion

Varieties 5 (5 in the flora).

Erigeron breweri is treated as a member of E. sect. Linearifolii in G. L. Nesom (1992b), where all of the varieties are mapped in detail.

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

Of conservation concern.

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

Key
1. Phyllaries glabrous or sparsely hairy, densely glandular
→ 2
1. Phyllaries strigoso- to hispido-hirsute, sometimes slightly glandular
→ 3
2. Plants usually 12–40 or 30–60 cm; stems ascending-erect; leaves usually 15–35 mm
var. breweri
2. Plants 7–15 cm; stems prostrate to procumbent or decumbent; leaves 5–12 mm
var. jacinteus
3. Plants 20–30 cm; stems often wiry and brittle; phyllaries hispido-hirsute (hairs translucent, spreading, stiff, relatively thick-based), glandular
var. porphyreticus
3. Plants (30–)40–75 cm; stems not wiry or brittle; phyllaries strigoso- or hispido-hirsute (hairs ascending to ascending-appressed, white), eglandular
→ 4
4. Phyllaries strigoso-hirsute (hairs relatively thin-based, ascending-appressed, gradually and slightly reduced in density from outer to inner phyllaries), eglandular
var. bisanctus
4. Phyllaries hispido-hirsute (hairs relatively thick-based, ascending, dense on outermost phyllaries, much less so on mid and inner), eglandular
var. covillei
Source FNA vol. 20, p. 316. FNA vol. 20, p. 276.
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. 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. 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. 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. 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. breweri var. bisanctus, E. breweri var. breweri, E. breweri var. covillei, E. breweri var. jacinteus, E. breweri var. porphyreticus
Name authority A. Gray: Proc. Amer. Acad. Arts 6: 541. (1866) Cronquist: Brittonia 6: 274. (1947)
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