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Erigeron goodrichii

(Uinta Mountain Fleabane)

Overview

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Vulnerable
Threat status

Common Names

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Common Names in English:

Uinta Mountain Fleabane

Description

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Genus Erigeron

Annuals , biennials, or perennials [subshrubs , shrubs , trees ], (0.5-) 2-90(-100) cm (taprooted, fibrous-rooted, or rhizomatous and fibrous-rooted, sometimes with simple or branched caudices, sometimes stoloniferous ) . Stems erect to ascending , decumbent , or prostrate , simple or branched, glabrous or hairy , sometimes glandular (hairs 2-seriate, minute, sometimes stipitate ) . Leaves basal and/or cauline (basal persistent or not to flowering) ; alternate; sessile or petiolate ; blades 1-nerved (3-nerved), linear to lanceolate, oblanceolate , or spatulate (bases sometimes clasping ), margins entire or ± dentate to pinnatifid , faces glabrous or hairy, sometimes glandular. Heads usually radiate , sometimes discoid or disciform (erect, nodding , or arching-pendent in bud), borne singly or in loose , corymbiform or paniculiform arrays. Involucres turbinate to hemispheric , 5-35 mm diam. Phyllaries 30-125(-150) in 2-5 series, 1- or 3-nerved (nerves golden-resinous; usually flat, rarely broadly keeled to convex ), narrowly elliptic- to linear-lanceolate, unequal to equal, margins scarious or not, faces hairy or glabrous, sometimes glandular. Receptacles flat to conic, pitted , epaleate. Ray florets 0 or 12-350 in 1(-2+) series, pistillate , fertile ; corollas usually white to bluish or purplish to pink, less commonly yellow (coiling from apices, reflexing at tube/lamina junction, or remaining ± straight and spreading ) . Peripheral florets (disciform heads) 50-200 in 1-4 series, pistillate. Disc florets 25-450, bisexual , fertile; corollas yellow (nerves orange-resinous), tubes shorter than usually tubular , sometimes strongly inflated and indurate throats , lobes 5, erect to spreading, deltate; style-branch appendages mostly deltate (papillate ) . Cypselae (tan) oblong to oblong-obovoid, compressed to flattened, 2(-4) -nerved, or subterete, 5-14-nerved (sect. Wyomingia and some other species), faces glabrous or strigose or sericeous , eglandular ; pappi persistent or readily falling, usually of outer setae or scales (0.1-0.4 mm), sometimes connate , plus 5-40(-50), stramineous , barbellate bristles , sometimes pappi only on ray or only on disc cypselae, or 0. x = 9.

Species ca. 390: nearly worldwide, mostly in temperate regions .

The North American and Central American species of Erigeron have been divided into sections (G. L. Nesom 1989c, 1990g, 1994b; Nesom and R. D. Noyes 1999), emphasizing variation in habit (especially taprooted versus rhizomatous and fibrous-rooted), vestiture , arrangement of heads in arrays and orientation before flowering (erect, nodding, or arching-pendent), behavior of ray corolla laminae (straight, reflexing, or coiling), cypsela and pappus morphology, and other morphologic features. The sequence and groupings of species treated here reflect significant modifications of earlier arrangements.

G. L. Nesom (1989d) hypothesized that Trimorpha [Erigeron sect. Trimorpha (Cassini) de Candolle] is separate from Erigeron, more closely related to Conyza. Studies by W. Huber and colleagues (e.g. , Huber 1993; Huber and Ö. Nilsson 1995) and R. D. Noyes (2000) have shown that Trimorpha species are closely related to those of sect. Erigeron and that both sections are relatively recently derived within the genus. As suggested by Nesom (1994b) and by Huber and Nilsson, and as discussed in detail and experimentally confirmed by Noyes, autogamous breeding systems apparently have arisen independently in groups of Astereae, including Trimorpha and Conyza, where the pistillate florets of a head are greatly increased in number (often outnumbering the bisexual florets), in multiple series, the inner sometimes with filiform , elaminate corollas, and the outer with reduced laminae.

In the molecular analysis by R. D. Noyes (2000), Conyzinae comprises Erigeron, American Conyza, the four genera of the South American Leptostelma group, and the North American Aphanostephus; the cladistically basal and terminal taxa of the subtribe are members of Erigeron. Noyes (p. 107) observed that "strictly speaking, although the Conyzinae form a monophyletic group [with caveats regarding Old World Conyza], Erigeron is paraphyletic, as five other genera are derived from within it." The molecular study included 46 of the 173 species treated here.

Polyploidy is common among species of Erigeron, and agamospermy apparently is a common correlate of polyploidy, especially in odd-polyploid plants . Molecular phylogenetic data (R. D. Noyes 2000) indicate that agamospermy has arisen at least three times within the genus.

In the descriptions and keys , some characteristics are assumed constant unless otherwise indicated (usually in parentheses) ; particular application of terms is discussed here. The indumentum of erigerons is often complex ; in order to simplify descriptions, glabrous applies here only to absence of non-glandular hairs, eglandular to the absence of glandular hairs; a totally glabrous plant (in the usual sense) would be glabrous and eglandular. Petiole margins are eciliate or sparsely ciliate unless otherwise indicated. Leaf bases of most erigerons are broadened or not, not thickened and white-indurate. Margins of leaves in some erigerons are entire but for tiny callous enations that correspond to the callous tips of teeth on some leaves with serrate margins. Here, margins with such tiny enations are described as denticulate. Heads of some erigerons are "pseudodisciform" in the sense that the outer pistillate florets have relatively small, ± filiform laminae (such florets are technically "ray florets" even though their "rays" are inconspicuous) and the inner pistillate florets have no laminae on their corollas. The distinction between corollas without and those with laminae is sometimes arbitrary . Ray laminae are considered strap-shaped and spreading unless otherwise indicated. Descriptions of ray color as "blue" should be read as lavender-blue.Guy L. Nesom "Erigeron". in Flora of North America Vol. 20 Page 3,9, 11, 12, 14, 17, 36, 204, 256, 257, 334. Oxford University Press. Online at EFloras.org.

Physical Description

Species Erigeron goodrichii

Perennials , 3-12 cm; taprooted, caudex branches usually relatively short and thick, sometimes apparently simple . Stems erect to decumbent-ascending (greenish proximally), usually hirsute to hirtellous (hairs deflexed , attenuate, basal cells erect), sometimes proximally strigose (hairs ascending), sometimes slightly glandular . Leaves basal (persistent ) and cauline; basal blades oblanceolate , 20-60 × 2-6 mm, cauline slightly reduced distally, mostly on proximal 1 / 2 of stem, margins entire (apices rounded to obtuse ), faces strigose to loosely hirsutulous , eglandular . Heads 1(-3). Involucres 5-7 × 10-15 mm. Phyllaries in 2-4 series, hirsute to hirsuto-villous, eglandular. Ray florets 30-60; corollas blue, 6-10 mm, laminae tardily coiling . Disc corollas 3.5-4.5 mm. Cypselae 1.8 mm (immature ), 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20-25 bristles . [source]

Habit: Forb/herb

Flowers: Bloom Period: July, August.

Habitat

Rocky sites, crevices, often at or above timberline, Engelmann spruce krummholz , meadows; (2200-)2700-3500 m (Ref. 100293).

Typically found at an altitude of 0 to 2,335 meters (0 to 7,661 feet).Mean = 1,143.330 meters (3,751.083 feet), Standard Deviation = 2,476.590 based on 6 observations. Altitude information for each observation from British Oceanographic Data Centre.

Biology

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Reproduction

Duration: Perennial

Taxonomy

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Unambiguous Synonyms

  1. Erigeron goodrichii S. L. Welsh, 1983

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Similar Species

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Members of the genus Erigeron

There are approximately 1600 species in this genus. Here are just 100 of them:

E. 'Adria' (Fleabane) · E. 'Amity' · E. 'Azure Beauty' · E. 'Azurfee' · E. 'Birch Hybrid' · E. 'Blue Beauty' (Fleabane) · E. 'Blue Star' (Fleabane) · E. 'Charity' (Fleabane) · E. 'Dainty' (Fleabane) · E. 'Dignity' · E. 'Dimity' · E. 'Doctor Worth' · E. 'Dominator' · E. 'Double Beauty' · E. 'Dunkelste Aller' · E. 'Elstead Pink' (Fleabane) · E. 'Felicity' (Fleabane) · E. 'Festivity' (Fleabane) · E. 'Foersters Liebling' (Foersters Liebling Fleabane) · E. 'Four Winds' (Fleabane) · E. 'Gaiety' (Fleabane) · E. 'Goat Rocks' · E. 'Goliath' · E. 'H.E. Beale' · E. 'Lidschatten' (Fleabane) · E. 'Lilofee' (Fleabane) · E. 'Mad Marion' (Erigeron) · E. 'Mrs F.H. Beale' · E. 'Nachthimmel' · E. 'Offenham Excellence' · E. 'Pamela' · E. 'Pink Beauty' (Fleabane) · E. 'Profusion' · E. 'Prosperity' (Prosperity Fleabane) · E. 'Quakeress' · E. 'Rosa Juwel' · E. 'Rosa Triumph' (Fleabane) · E. 'Rosenballett' · E. 'Rotes Meer' · E. 'Schneewittchen' · E. 'Schwarzes Meer' · E. 'Sea Breeze' (Daisy Fleabane) · E. 'Serenity' (Fleabane) · E. 'Sincerity' · E. 'Snow Queen' · E. 'Sommerabend' · E. 'Sommerneuschnee' · E. 'Spanish Daisy' · E. 'Strahlenmeer' · E. 'The Jewel' · E. 'Unity' (Fleabane) · E. 'Violetta' · E. 'Viridis' · E. 'Wayne Roderick' · E. 'White Quakeress' (Fleabane) · E. 'Wuppertal' · E. abajoensis (Abajo Daisy) · E. abruptorum · E. abyssinicus · E. accedens · E. acer (Blue Fleabane) · E. acer acer · E. acer var. debilis · E. acer var. glabratus · E. acer var. racemosus · E. acomanus (Acoma Fleabane) · E. acre · E. acris (Bitter Boreal Daisy) · E. acris angulosus · E. acris arctophilus · E. acris asadbarensis · E. acris botschantzevii · E. acris brachycephalus · E. acris debilis (Bitter Fleabane) · E. acris decoloratus · E. acris droebachiensis · E. acris lalehzaricus · E. acris manshuricus · E. acris phaeocephalus · E. acris politus (Bitter Fleabane) · E. acris pycnotrichus · E. acris serotinus · E. acris var. arcuans · E. acris var. khasianus · E. acris var. oligocephalus · E. acutatus · E. adenophorus · E. adscendens · E. aegyptiacus · E. aellenii · E. aequifolius (Hall's Daisy) · E. affinis · E. alamosanus · E. alaskanus f. albiflorus · E. alatus · E. albidus · E. alcicornutus · E. alexeenkoi · E. algidus (Sierra Daisy) · E. aliceae (Alice Eastwood's Fleabane)

Bibliography

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More Info

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 23, 2007:

Identifiers

Footnotes

Last Revised: 2008-10-01