Sericocarpus Nees (Q2288)

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Sericocarpus is a taxon with the rank genus within the tribe Astereae
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English
Sericocarpus Nees
Sericocarpus is a taxon with the rank genus within the tribe Astereae

    Statements

    taxon/id/Sericocarpus Nees
    0 references
    Sericocarpus Nees
    Sericocarpus
    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
    White-topped aster (English)
    Stems erect, simple, glabrate to hairy.
    petiolate (basal) to sessile (cauline);
    basal blades spatulate, margins distally serrate;
    cauline blades 1-nerved (reticulately nerved), linear, obovate or ovate, reduced distally, margins serrate or entire, ciliate (apices acuminate to acute, sometime slightly cuspidate), faces glabrate or hairy.
    Heads radiate, (2–5 per branch in clusters) in corymbiform to broadly corymbiform (sometimes compact) arrays.
    Involucres cylindric, (3–9 ×) 2.4–8.5 mm.
    Phyllaries 15–30 in 3–5 series, 1-nerved (± keeled), thumbnail-shaped, inner more linear, unequal, bases ± indurate, margins scarious, ciliate, apices with dark green zones, (faces glabrate to hairy).
    Receptacles slightly convex, pitted, epaleate.
    Ray-florets 1–6, pistillate, fertile;
    Disc-florets 5–19, bisexual, fertile;
    corollas white to cream, tubes shorter (longer in S. linifolius) than weakly funnelform throats, lobes 5, erect to spreading, triangular;
    style-branch appendages linear-lanceolate.
    Cypselae fusiform to obconic, terete to slightly compressed, 7–10-ribbed, ± densely strigose;
    pappi persistent, of 25–50, white to tan or rust, barbellate bristles in (2–) 3 (–4) series (outermost, when present, 0.1–1 mm, outer distally attenuate, 3–7 mm, inner distally clavate, 3–8 mm).