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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual (1)5--35 cm, +- gray to green, cobwebby to woolly. Stem: 1, +- erect [0 or 2--10+, ascending to prostrate], forked at least distally, +- evenly leafy [leafless between distal forks]. Leaf: alternate, +- sessile [petioled], oblanceolate to +- spoon-shaped [to lanceolate], entire; distal leaves subtending heads +- crowded, largest > proximal leaves. Inflorescence: heads disciform, +- sessile in groups of 8--20; involucre 0 or vestigial (simulated by paleae); receptacle length 5--15 × width, +- cylindric [club-shaped], glabrous; paleae, except innermost, each +- enfolding pistillate flower, +- persistent [deciduous], lanceolate, acuminate to awned, abaxially cobwebby, obscurely parallel-veined, margin +- reflexed as indistinct, narrow, terminal scarious wing, wing indistinct, narrow, terminal, recurved [erect], visible in head; innermost paleae generally 5, collectively surrounding inner pistillate and disk flowers, <= outer, +- ascending [spreading], +- concave, lanceolate, generally acuminate, papery, scarious, +- glabrous. Pistillate Flower: 20--30[40+], all or [generally only] outer paleate; corolla obscure, narrowly cylindric. Disk Flower: 5--9(11), bisexual; pappus present; corolla 4-lobed; anther base tailed, tip +- triangular; style tips +- linear-oblong. Fruit: +- club-shaped and +- compressed laterally to cylindric, rough or papillate [smooth], dull, corolla scar at [near] tip; outer fruit scarcely > inner, falling free of palea; inner fruit free of paleae; outer pistillate flower pappus 0, inner and disk flower pappus of 13--21 deciduous bristles (visible in head, generally falling together in complete or broken ring).
Species In Genus: 12 species: Europe, western Asia, northern Africa, northern Atlantic islands, some introduced +- worldwide. Etymology: (Latin: with threads, for woolly hairs) Note: Other taxa in TJM (1993) moved to Logfia.
eFlora Treatment Author: James D. Morefield
Jepson Online Interchange
Previous taxon: Euthamia occidentalis
Next taxon: Filago pyramidata var. pyramidata
Citation for this treatment: James D. Morefield 2016. Filago, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=436, accessed on December 11, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 11, 2016.