Tussilago Linnaeus (Q2962)
Tussilago is a taxon with the rank genus within the tribe Senecioneae
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Tussilago Linnaeus
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Tussilago is a taxon with the rank genus within the tribe Senecioneae
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Statements
taxon/id/Tussilago Linnaeus
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Tussilago Linnaeus
Tussilago
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 20: Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford University Press, New York.
accepted
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Stems usually 1, erect (scapiform, not branched).
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petiolate (petiole lengths 1–2 times blades) or sessile;
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blades (basal) palmately nerved, orbiculate to polygonal or lobed (cauline leaves lanceovate to linear, bractlike or scalelike), margins denticulate, abaxial faces gray-tomentose, adaxial tomentulose, glabrescent.
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Heads (erect at flowering, nodding in fruit) radiate, borne singly.
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Calyculi 0 (or indistinct, bractlets intergrading with bractlike cauline leaves).
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(larger in fruit).
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Phyllaries persistent, usually ± 21 in (1–) 2 series, erect, distinct, lance-linear to linear, subequal, margins scarious (apices greenish or yellow-green).
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Receptacles convex, foveolate (socket margins ± membranous), epaleate.
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Ray-florets 100–200 (–300+), pistillate, fertile;
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corollas yellow (drying pinkish).
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Disc-florets (20–) 30–40, functionally staminate;
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corollas yellowish, tubes longer than campanulate throats, lobes 5, erect, linear;
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styles not divided.
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Cypselae narrowly cylindric or ± prismatic, 5 (–10) -ribbed, glabrous;
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pappi readily falling or fragile, of 60–100+, white, barbellulate or smooth bristles.
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orbiculate
polygonal or lobed
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