Filago vulgaris — Details

Gifola germanica Dumort.:
United States (North America)

Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York. http://www.tropicos.org/Reference/1515

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Filago vulgaris Lam.:
United States (North America)

Munz, P. A. 1968. Suppl. Calif. Fl. 1–224. University of California Press, Berkeley. http://www.tropicos.org/Reference/1718

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National Distribution

Canada

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Source: NatureServe

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Physical Description

Morphology

Comments

Filago vulgaris arrived in North America before 1739 (G. Wagenitz 1976). Paucity of modern collections suggests that it may not spread much or persist for long in the flora area. Reports from southern Ontario, Alabama, Georgia, and Kentucky have not been confirmed by me. The illustration of "Filago germanica" in L. Abrams and R. S. Ferris (1923–1960, vol. 4) depicts F. pyramidata var. pyramidata.

I agree with G. Wagenitz’s (1965) nomenclatural analysis. Filago vulgaris replaced F. germanica Linnaeus, which is a later homonym of F. germanica Hudson, which in turn is a superfluous name for F. pyramidata Linnaeus.

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Description

Leaves: largest oblong to lanceolate, widest in proximal ²/3, 15–25(–30) × 2–3(–4) mm, ± undulate; longest distal capitular leaves 0.8–1.1 times head heights, acute. Heads in glomerules of (15–)20–35+, narrowly ± ampulliform, largest (4–)5–6 × 1.5–2 mm; largest glomerules 9–13 mm diam. Receptacles clavate. Pistillate paleae (except innermost) ± (10–)15 in (2–)3 series, spirally ranked, rounded in cross section, longest 3.5–4.2 mm; wings yellowish tinged reddish, apices erect. Innermost paleae pistillate, surrounding 14–25+ florets. Pistillate florets: outer ± (10–)15 epappose, inner 10–20+ pappose. Bisexual florets (1–)2–3(–4). 2n = 28 (British Isles, Bulgaria, Czechoslovakia, Greece).

Flora of North America @ eFloras.org

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Diagnostic Description

Synonym

Filago germanica Linnaeus, Sp. Pl. ed. 2, 2: 1311. 1763, not Hudson 1762; Gifola germanica Dumortier

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Ecology

Associations

Foodplant / sap sucker
adult of Amblytylus delicatus sucks sap of Filago vulgaris
Remarks: season: 2nd week 7-mid 8

Foodplant / gall
larva of Apion brunnipes causes gall of leaf of Filago vulgaris

Foodplant / feeds on
larva of Olibrus pygmaeus feeds on Filago vulgaris

Source: BioImages - the Virtual Fieldguide (UK)

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Filago vulgaris

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 2
Species With Barcodes: 1

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Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

NatureServe Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

Source: NatureServe

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National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNA - Not Applicable

United States

Rounded National Status Rank: NNA - Not Applicable

Source: NatureServe

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Wikipedia

Filago vulgaris

This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2010)

Wikimedia Commons has media related to: Filago vulgaris

Filago vulgaris, commonly known as Common Cudweed, is a herbaceous annual plant of the genus Filago. The plant can reach 10 - 30 cm. The flowers are light yellow.

This Asteraceae-related article is a stub. You can help Wikipedia by expanding it.

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Names and Taxonomy

Taxonomy

Comments: Eastern U.S. records of Filago pyramidata are instead F. vulgaris, according to Kartesz (1999), who accepts F. pyramidata only for California within North America. LEM 26Oct01.

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