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early blue-top fleabane

Brewer's daisy, Brewer's fleabane

Habit Perennials, 5–25 cm; taprooted, caudices with relatively short, thick branches, often retaining old leaf bases. 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.
Stems

erect, glabrous or sparsely hirsute to villous, densely glandular.

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.

Leaves

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

blades linear to narrowly oblanceolate, 20–90(–150) × 2–4(–7) mm, margins entire, faces glabrous or sparsely hispidulous, minutely glandular;

cauline on proximal 1/3–2/3 of stems, gradually reduced distally.

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

Involucres

4–8 × 7–15 mm.

mostly 4–6 × 9–14 mm.

Ray florets

30–90;

corollas usually bluish to purplish, sometimes white, drying pinkish, 6–16 mm, laminae reflexing.

20–62;

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

Disc corollas

3.2–5.3 mm (throats tubular).

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

Phyllaries

in 3–4 series (midvein region greenish), sparsely to moderately hispid or hispido-villous, minutely and densely glandular.

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.

Heads

1.

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

Cypselae

1.8–2.2 mm, 2-nerved, faces sparsely strigose;

pappi: outer of inconspicuous, fine setae, inner of 18–25 bristles.

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

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

Erigeron vetensis

Erigeron breweri

Phenology Flowering May–Jul(–Aug).
Habitat Dry, rocky slopes, roadsides, usually open exposures, ponderosa pine with juniper and/or oak, lodgepole pine, spruce-fir
Elevation (1700–)2300–3300 m ((5600–)7500–10800 ft)
Distribution
from FNA
CO; NE; NM; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
Discussion

Erigeron vetensis is found in the Rocky Mountains.

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

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.)

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. 288. FNA vol. 20, p. 316.
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. 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. 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. 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
Subordinate taxa
E. breweri var. bisanctus, E. breweri var. breweri, E. breweri var. covillei, E. breweri var. jacinteus, E. breweri var. porphyreticus
Synonyms E. glandulosus, E. porteri
Name authority Rydberg: Bull. Torrey Bot. Club 32: 126. (1905) A. Gray: Proc. Amer. Acad. Arts 6: 541. (1866)
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