View source for Filago

{{Treatment/ID
|accepted_name=Filago
|accepted_authority=Loefling
|publications={{Treatment/Publication
|title=in C. Linnaeus, Sp. Pl.
|place=2: 927, 1199. 1753
|year=1753
}}, {{Treatment/Publication
|title=Gen. Pl. ed.
|place=5, 397. 1754
|year=1754
}}
|common_names=Herba impia;cotonnière;cottonrose
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Gnaphalieae;Filago
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Gnaphalieae]]</div><div class="higher-taxon"><small>genus</small>[[Filago]]</div></div>
|etymology=Latin filum, thread, and - ago, possessing or resembling, alluding to abundant cottony indument
|volume=Volume 19
|mention_page=page 26, 28, 385, 387, 444, 448, 461
|treatment_page=page 447
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> (1–)5–40 cm. <b>Stems</b> [0] 1, ± erect, or 2–7[–10+], ± ascending [prostrate]. <b>Leaves</b> cauline [basal]; alternate; blades lanceolate to oblanceolate [spatulate or ± round]. <b>Heads</b> in (dense, spheric [hemispheric]) glomerules of [2–]8–35+ in ± dichasiiform arrays [borne singly]. <b>Involucres</b> 0 or inconspicuous. <b>Phyllaries</b> usually 0, rarely 1–4, unequal (similar to paleae). <b>Receptacles</b> cylindric to clavate (heights [2–]5–15 times diams.), glabrous. <b>Pistillate</b> paleae (except usually innermost) ± persistent [falling], ± erect to ascending; bodies with 5+ nerves (nerves ± parallel, obscure), lanceolate to ovate, open to ± folded (each at most enfolding, not enclosing a floret); wings erect to recurved (apices acuminate to aristate). <b>Innermost</b> paleae usually all pistillate, in some species bisexual and pistillate, persistent or tardily falling, usually 5, erect to ascending [spreading] (scarcely enlarged) in fruit, shorter than other pistillate paleae; bodies lanceolate to ovate. <b>Pistillate</b> florets [12–]27–40+. <b>Functionally</b> staminate florets 0. <b>Bisexual</b> florets (1–)2–9(–11); corolla lobes 4, ± equal. <b>Cypselae</b> brown, ± monomorphic: terete to ± compressed, cylindric to ± obovoid, usually straight, not gibbous, faces papillate to muricate [glabrous, smooth], dull; corolla scars apical [subapical]; pappi: outer pistillate 0, inner pistillate and bisexual of [3–]13–21 bristles (visible in heads). <b>x</b> = 14.</span><!--

-->{{Treatment/Body
|distribution=Europe;w Asia;n Africa;Atlantic Islands;introduced in North America;Australia.
|introduced=true
|discussion=<p>Species 12(–23) (2 in the flora).</p><!--
--><p>See discussion of Filagininae following the tribal description (p. 385).</p><!--
--><p>The name <i>Filago</i> has been used also for the genus now usually recognized as Evax Gaertner. Here <i>Filago</i>, in the narrow sense, contains twelve Old World species. Six species long included in <i>Filago</i> in North America are here separated as <i>Logfia</i>.</p><!--
--><p><i>Filago</i> species grow in open, dry or somewhat moist habitats of arid, semiarid, Mediterranean, and humid-temperate to subtropical climates. The species in the flora grow in disturbed habitats; neither appears to be aggressively weedy.</p><!--
--><p><i>Filago</i> appears to be sister to or derived from <i>Logfia</i> and is probably ancestral to Evacopsis and Evax (J. D. Morefield 1992). <i>Filago</i> is most easily recognized by outer epappose florets subtended by open or ± folded, persistent, acuminate to aristate paleae, and prominent pappi on inner pistillate and bisexual florets.</p>
|tables=
|references={{Treatment/Reference
|id=wagenitz1969a
|text=Wagenitz, G. 1969. Abgrenzung und Gliederung der Gattung Filago L. s.l. (Compositae–Inuleae). Willdenowia 5: 395–444.
}}{{Treatment/Reference
|id=wagenitz1976b
|text=Wagenitz, G. 1976. Two species of the “Filago germanica” group (Compositae–Inuleae) in the United States. Sida 6: 221–223.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Largest leaves oblong to lanceolate, widest in proximal 2/3; heads in glomerules of (15–)20–35+, narrowly ± ampulliform, largest 1.5–2 mm diam.; pistillate paleae spirally ranked, longest 3.5–4.2 mm, innermost surrounding 14–25+ florets (10–20+ pistillate); longest dis- tal capitular leaves 0.8–1.1 times head heights, acute
|[[Filago vulgaris|Filago vulgaris]]
|-id=key-0-1
|1
|Largest leaves oblanceolate to narrowly spatulate, widest in distal 1/3; heads in glomerules of mostly (8–)12–16(–20), ± bipyramidal, largest 2.5–4 mm diam.; pistillate paleae vertically ranked, longest 4.5–6 mm, innermost surrounding 8–13 florets (2–7 pistillate); longest dis- tal capitular leaves 1.3–2 times head heights, obtuse
|[[Filago pyramidata|Filago pyramidata]]
|}
</div></div><!--

-->{{#Taxon:
name=Filago
|author=James D. Morefield
|authority=Loefling
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Linny Heagy
|illustration copyright=Flora of North America Association
|distribution=Europe;w Asia;n Africa;Atlantic Islands;introduced in North America;Australia.
|introduced=true
|reference=wagenitz1969a;wagenitz1976b
|publication title=in C. Linnaeus, Sp. Pl.;Gen. Pl. ed.
|publication year=1753;1754
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_741.xml
|tribe=Asteraceae tribe Gnaphalieae
|genus=Filago
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Gnaphalieae]]