Ionactis Greene (Q2268)
Ionactis is a taxon with the rank genus within the tribe Astereae
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Ionactis Greene
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Ionactis is a taxon with the rank genus within the tribe Astereae
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Statements
taxon/id/Ionactis Greene
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Ionactis Greene
Ionactis
Greene
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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Perennials or subshrubs, 4–30 (–70) cm (cespitose; thickly taprooted, sometimes with woody caudex branches or rhizomes).
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Stems erect, branched or simple, puberulent or glabrous.
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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).
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Heads radiate, borne singly, sometimes 2–3+ in loose, corymbiform arrays (on simple branches originating beyond midstems).
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Involucres broadly turbinate to campanulate, (4.5–13 ×) 10–15 mm.
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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.
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Receptacles flat, pitted, epaleate.
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Ray-florets 7–21 (in 1 series), pistillate, fertile;
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corollas violet to bluish, rarely white in I. linariifolia (laminae coiling).
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Disc-florets 19–50, bisexual, fertile, functionally staminate in I. caelestis;
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corollas yellow, tubes shorter than narrowly tubular throats, lobes 5, erect to spreading, deltate;
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style-branch appendages lanceolate.
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Cypselae narrowly obovoid, flattened, ray (2–) 3-nerved, disc 2 (–4) -nerved, faces densely strigose to sericeous, eglandular or glandular;
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pappi persistent, in 1–2 series, outer of shorter bristles or scales, inner of 18–50 straw-colored, barbellate, apically attenuate bristles.
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narrowly oblong or elliptic-lanceolate
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hispidulous
puberulent or glabrous
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