Ambrosia pumila A.Gray

Dwarf bur ragweed (en)

Species

Angiosperms > Asterales > Asteraceae > Ambrosia

Characteristics

Perennials, 10–20(–40+) cm. Stems erect. Leaves mostly alternate (sometimes crowded at bases of stems); petioles 5–35(–55) mm; blades deltate to elliptic, 15–35(–75) × 12–25(–45) mm overall, laciniately (1–)2(–3)-pinnately lobed, bases cuneate to truncate, ultimate margins entire, abaxial and adaxial faces ± strigillose to sericeous (often grayish) and gland-dotted. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 0.5–6 mm; involucres obliquely cup-shaped, 3–5 mm diam., ± strigillose; florets 8–25+. Burs: bodies ± fusiform, 2–2.5 mm, strigillose, spines or tubercles 0 or 1–5, mostly distal, stoutly conic, 0.1–0.5 mm, tips straight. 2n = 72.
Life form perennial
Growth form herb
Growth support free-standing
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Mature height (meter) 0.1 - 0.2
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OctNovDec
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Hardiness (USDA) 8-12

Usage

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Cultivation

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Images

Ambrosia pumila unspecified picture

Distribution

Ambrosia pumila world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:176124-1
WFO ID wfo-0000038062
COL ID CPQ7
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Franseria pumila Ambrosia pumila