Tonestus lyallii A.Nelson

Lyall's goldenweed (en)

Species

Angiosperms > Asterales > Asteraceae > Tonestus

Characteristics

Perennials, loosely cespitose, 4–8.5(–15) cm; with branched caudices surmounting poorly developed taproots, or short rhizomes. Stems glabrous , densely stipitate-glandular. Leaves: basal blades linear to spatulate, 30–85 × 3–12 mm; cauline blades oblong to broadly lanceolate, 12–37 × 3–9(–12) mm, gradually reduced distally; 3–5-nerved, margins entire, eciliate, stipi-tate-glandular, faces stipitate-glandular . Peduncles 2–5 mm . Heads 1(–2). Involucres broadly campanulate, 11–22 × 8–11 mm. Phyllaries 18–42, in 3–4(–5) series, , 1-or weakly 3-nerved, ± equal, margins eciliate; outer and mid oblong to broadly lanceolate, 5.2–9.5 × 1–3.5 mm, stipitate-glandular, apices acute; inner green or anthocyanic, linear, 8–13 × 1–2 mm, chartaceous proximally, margins scarious, fimbriate and/or stipitate-glandular distally , apices acute to acuminate, sometimes reflexed, faces stipitate-glandular distally. Ray florets 11–23; laminae elliptic, 6.5–8 × 1–3.5 mm. Disc florets 27–56; corollas narrowly funnelform, 5.5–8.5 mm, scarcely exceeding involucres, lobes erect to spreading, 0.6–0.8 mm, lengths 1 / 10 – 1 / 5 corollas; anthers 2–2.5 mm; style-branch appendages lanceolate, 0.7–1 × 0.2–0.3 mm, stigmatic lines 0.9–1.4 mm. Cypselae linear, 2.5–5.5 mm, 8–12-nerved, faces glabrous or sparsely hairy distally; pappus bristles 35–52, flexible. 2n = 18.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
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Spread -
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Root system rhizome tap-root
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Environment

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Hardiness (USDA) 4-9

Usage

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Edible -
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Cultivation

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Images

Tonestus lyallii unspecified picture

Distribution

Tonestus lyallii world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:255047-2
WFO ID wfo-0000040468
COL ID 7CGVN
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Haplopappus lyallii Tonestus lyallii Hoorebekia lyallii Pyrrocoma lyallii Stenotus lyallii Aster jamesii