Malacothrix stebbinsii W.S.Davis & P.H.Raven

Stebbins' desertdandelion (en)

Species

Angiosperms > Asterales > Asteraceae > Malacothrix

Characteristics

Annuals, 5–60 cm. Stems 1–5+, ± erect, branched distally, sparsely leafy, glabrous. Cauline leaves: proximal obovate, pinnately lobed (lobes 3–5+ pairs, triangular to oblong or linear), not fleshy, ultimate margins entire or dentate, faces glabrous; distal reduced (usually with 2 lobes near bases). Calyculi of 5–8+, ovate to lanceolate bractlets, hyaline margins 0.05–0.2 mm. Involucres ± campanulate, 7–10 × 3–6 mm. Phyllaries 16–20+ in 2–3 series, lanceolate to lance-linear, hyaline margins 0.05–0.1 mm wide, faces glabrous. Receptacles not bristly. Florets 19–70; corollas usually yellow, sometimes white, 6–7 mm; outer ligules exserted 1–2 mm. Cypselae ± cylindro-fusiform, 1.7–2.3 mm, ribs extending to ca. 0.1–0.2 mm short of apices (minutely hirtellous or muriculate), ± equal (distal 0.1–0.2 mm of cypselae smooth); pappi persistent, of 8–15+, needlelike teeth plus 1(–2) bristles. Pollen 70–100% 4-porate. 2n = 28.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 0.05 - 0.6
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OctNovDec
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Environment

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Hardiness (USDA) 5-11

Usage

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Cultivation

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Distribution

Malacothrix stebbinsii world distribution map, present in Mexico and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:308059-2
WFO ID wfo-0000024606
COL ID 3XL42
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Malacothrix stebbinsii Malacothrix clevelandii var. stebbinsii