Pityopsis Nuttall (Q2279)

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Pityopsis is a taxon with the rank genus within the tribe Astereae
Language Label Description Also known as
English
Pityopsis Nuttall
Pityopsis is a taxon with the rank genus within the tribe Astereae

    Statements

    taxon/id/Pityopsis Nuttall
    0 references
    Pityopsis Nuttall
    Pityopsis
    Nuttall
    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
    Grass-leaved goldenasters (English)
    e United States
    se Mexico
    Bahamas
    Central America (Belize)
    Central America (Guatemala)
    Central America (Honduras)
    Stems ascending to erect, simple or branched, usually moderately to densely appressed silky-sericeous (hairs often anastomosing), rarely glabrate, sometimes stipitate-glandular.
    blades 3–11-parallel-nerved, linear to lanceolate or ovate, often grasslike (basal shorter or longer than mid, mid larger), margins entire, faces glabrate to densely piloso-sericeous (hairs long, thin, soft, sometimes anastomosing).
    Heads radiate, usually in corymbiform to paniculiform arrays, rarely borne singly.
    Involucres turbinate (campanulate upon drying), (4.5–13 ×) 5.5–14 mm.
    Phyllaries 30–50 in 3–5 series, 1-nerved (midnerves sometimes raised; not keeled), lanceolate, unequal, margins scarious, (darker green zones lens-shaped apically) faces glabrate to silky-pilose and/or densely stipitate-glandular.
    Receptacles slightly convex, pitted, epaleate.
    Ray-florets 8–35, pistillate, fertile;
    Disc-florets 15–60, bisexual, fertile;
    corollas yellow, ± ampliate (glabrate, hairs minute and usually only near base of limbs, rarely sparsely to moderately long pilose on much of limbs), tubes shorter than narrowly funnelform throats, lobes 5, erect to spreading, deltate (glabrous or strigose, rarely sparsely long-pilose);
    style-branch appendages deltate (papillate).
    Cypselae (often dark) fusiform, sometimes slightly compressed, sometimes slightly falcate, 8–10-ribbed, faces sparsely to densely strigose;
    pappi persistent, in (3–) 4 series, outer of linear to linear-triangular, barbellate or erose-fimbrillate scales (0.3–1.4 mm, length 5–20% longer inner), inner 2–3 series of 25–50 light tan to light rust, unequal, barbellate, apically attenuate or weakly clavate bristles.