Ionactis Greene (Q2268)

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

    Statements

    taxon/id/Ionactis Greene
    0 references
    Ionactis Greene
    Ionactis
    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
    Ankle-aster (English)
    Perennials or subshrubs, 4–30 (–70) cm (cespitose; thickly taprooted, sometimes with woody caudex branches or rhizomes).
    Stems erect, branched or simple, puberulent or glabrous.
    blades (1-nerved) spatulate (proximal) or linear to narrowly oblong or elliptic-lanceolate, mostly even in size and shape (stiff), margins entire, faces hispidulous to puberulent or glabrous (glandular in I. caelestis).
    Heads radiate, borne singly, sometimes 2–3+ in loose, corymbiform arrays (on simple branches originating beyond midstems).
    Involucres broadly turbinate to campanulate, (4.5–13 ×) 10–15 mm.
    Phyllaries 20–60 in 2–6 series, appressed, 1-nerved (midnerves usually indurate; strongly keeled), linear-lanceolate, unequal, herbaceous to indurate, without distinct herbaceous apical zones, margins scarious or not, glabrous or hirsuto-strigose, hirtellous, or loosely strigillose.
    Receptacles flat, pitted, epaleate.
    Ray-florets 7–21 (in 1 series), pistillate, fertile;
    corollas violet to bluish, rarely white in I. linariifolia (laminae coiling).
    Disc-florets 19–50, bisexual, fertile, functionally staminate in I. caelestis;
    corollas yellow, tubes shorter than narrowly tubular throats, lobes 5, erect to spreading, deltate;
    style-branch appendages lanceolate.
    Cypselae narrowly obovoid, flattened, ray (2–) 3-nerved, disc 2 (–4) -nerved, faces densely strigose to sericeous, eglandular or glandular;
    pappi persistent, in 1–2 series, outer of shorter bristles or scales, inner of 18–50 straw-colored, barbellate, apically attenuate bristles.