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Conyza bonariensis (L.) Cronquist
Cobblers Pegs; Flaxlef Fleabane; Flaxleaf Fleabane; Tall Fleabane; Rough Conyza; Erigeron bonariense L; Erigeron linifolius Willd; Erigeron linifolium orth var Willd; Conyza ambigua Dc; Erigeron crispus Pourr; Argentine Fleabane; Erigeron bonariensis L; Asthmaweed; Erigeron bonariensis; Marsea bonariensis

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Conyza bonariensis
© Copyright Bobby Hattaway 2011 · 5
Conyza bonariensis
Conyza bonariensis
© Copyright Bobby Hattaway 2011 · 5
Conyza bonariensis

Conyza bonariensis
© Copyright Bobby Hattaway 2011 · 5
Conyza bonariensis
Conyza bonariensis
© Copyright Bobby Hattaway 2011 · 5
Conyza bonariensis

Associates · map
FamilyScientific name @ source (records)
Colletidae  Hylaeus leptocephala @ UCRC_ENT (1)
Pucciniaceae  Puccinia cyperi @ BPI (1)

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FNA | Family List | FNA Vol. 20 | Asteraceae | Conyza

2. Conyza bonariensis (Linnaeus) Cronquist, Bull. Torrey Bot. Club. 70: 632. 1943.

Erigeron bonariensis Linnaeus, Sp. Pl. 2: 863. 1753

Plants erect, 10—100(—150+) cm, branched mostly distally. Leaves: faces ± densely strigose or hispidulous; proximal blades oblanceolate, 30—80(—120+) × 10—25+ mm, obscurely lobed to coarsely toothed or entire; distal narrowly oblanceolate to linear, 10—50 × 2—10 mm, obscurely toothed or entire. Heads usually in paniculiform to racemiform, rarely corymbiform arrays. Involucres 3.5—5 mm. Phyllaries usually strigose or hispidulous; outer greenish to purplish, lanceolate, shorter; inner stramineous to purplish, linear-attenuate (more chartaceous to scarious, less hairy). Receptacles 3—5 mm diam. in fruit. Pistillate florets 60—150+; corollas ± equaling or surpassing styles, laminae 0 or to 0.3 mm. Disc florets 8—12+. Cypselae pale tan, 1—1.5 mm, faces glabrous or sparsely strigillose; pappi of 15—25+, pinkish, sordid, or tawny bristles 3—4+ mm. 2 n = 54.

Flowering year round, mostly late summer—fall. Disturbed sites, along roads and streets; 0—500 m; introduced; Ala., Ariz., Calif., Fla., Ga., La., Miss., N.Mex. N.C., Oreg., S.C., Tex., Utah, Va.; South America.

Conyza bonariensis is widespread in tropical and warm-temperate regions of the world. It is thought to be native to South America.

Updated: 2022-01-22 14:47:53 gmt
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