Tonestus pygmaeus A.Nelson

Pygmy goldenweed (en)

Species

Angiosperms > Asterales > Asteraceae > Tonestus

Characteristics

Perennials, loosely cespitose, 1–9 cm; with branched caudices surmounting well-developed taproots. Stems densely hairy, sometimes also stipitate-glandular. Leaves: basal blades linear to spatulate, 10–50(–95) × 1.5–6 mm; cauline blades oblong to broadly lanceolate, 15–34 × 3–7 mm, gradually reduced distally; 3–5-nerved, margins entire, ciliate, sometimes stipitate-glandular, faces eglandular or sparsely stipitate-glandular. Heads 1(–2). Peduncles 3–8 mm. Involucres broadly campanulate, 8–20 × 7–12 mm. Phyllaries 16–34, in 3–4 (–5) series, 1-or weakly 3–5-nerved, ± equal, margins ciliolate at least distally; outer and mid green, ovate to oblong, 4.5–10.5 × 1.5–5.5 mm, foliaceous, apices rounded to obtuse, faces sparsely stipitate-glandular distally; inner green or usually anthocyanic, linear to narrowly oblong, 5–9 × 0.9–4 mm, chartaceous proximally, margins scarious, often fimbriate, sometimes stipitate-glandular, apices acute to acuminate, s ometimes reflexed, faces sparsely stipitate-glandu lar distally. Ray florets 10–16(–35); laminae elliptic, 6.5–8.5 × 1.5–3.5 mm. Disc florets 43–66; corollas narrowly funnelform, 4.5–7.5 mm, lobes erect to spreading, 0.8–1.2 mm, lengths ca. 1 / 7 corollas; anthers 2.2–2.8 mm; style-branch appendages lanceolate, 0.8–1.1 × 0.3 mm wide, stigmatic lines 0.6–1 mm. Cypselae cylindric, 2–5 mm, 8–9-nerved, faces villous; pappus bristles ± 34–51, flexible. 2n = 18.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system tap-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Tonestus pygmaeus world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:255048-2
WFO ID wfo-0000131572
COL ID 7CH7K
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Tonestus pygmaeus Macronema pygmaeum Aster stenotus Stenotus pygmaeus Haplopappus pygmaeus