Bidens heterosperma A.Gray

Rocky mountain beggarticks (en)

Species

Angiosperms > Asterales > Asteraceae > Bidens

Characteristics

Annuals, (5–)10–30(–60+) cm. Leaves: petioles 3–20 mm; blades usually rounded-deltate overall, 10–30+ × 5–20+ mm, 1–2-pinnatisect, ultimate lobes linear to filiform, 2–25 × 0.5–1(–2) mm, bases obscurely cuneate, ultimate margins minutely, if at all, ciliate, apices obtuse to acute (sometimes apiculate), faces glabrous or sparsely hirtellous. Heads usually borne singly. Peduncles 10–50(–100) mm. Calyculi of (1–)3(–5), appressed to spreading, linear bractlets (1–)3(–4) mm, margins minutely, if at all, ciliate, abaxial faces usually glabrous, sometimes sparsely hispidulous. Involucres ± cylindric, 3.5–5 × (1–)2–3 mm. Phyllaries 5–6, lance-elliptic to lanceolate, 2.5–4(–5) mm. Ray florets 0 or 1–3+; laminae yellowish, 1–4 mm. Disc florets 5–9(–13); corollas yellowish, 1–1.5 mm. Cypselae red-brown to blackish (sometimes with lighter blotches), outer ± obcompressed and linear, 3–5 mm, margins not ciliate, apices ± truncate, faces 2-grooved, usually glabrous; inner similar, ± equally 4-angled, linear-fusiform, (6–)7–12 mm, apices ± attenuate; pappi 0, or of 2(–3) spreading to divergent, retrorsely barbed awns 1–2 mm.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
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Environment

Light 7-9
Soil humidity 5-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-12

Usage

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

Cultivation

Mode -
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Distribution

Bidens heterosperma world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:184961-1
WFO ID wfo-0000068473
COL ID 68K2R
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Bidens heterosperma