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

Twin desertdandelion (en)

Species

Angiosperms > Asterales > Asteraceae > Malacothrix

Characteristics

Annuals, 5–30+ cm. Stems 1–11, erect or ascending, branched mostly proximally, glabrous or sparsely arachnose to puberulent and glabrescent. Cauline leaves: proximal mostly lance-linear, sometimes pinnately lobed, not fleshy, ultimate margins dentate or entire, faces glabrous or sparsely arachnose to puberulent and glabrescent; distal reduced subentire. Calyculi of 8–12+ lance-deltate to lanceolate bractlets, hyaline margins 0.05–0.3 mm wide. Involucres narrowly campanulate, 6–10 × 3–6 mm. Phyllaries 18–21+ in ± 2 series, lance-linear to linear, ± equal, hyaline margins 0.05–0.2 mm wide, faces glabrous. Receptacles not bristly. Florets 32–73: corollas yellow, 4–9 mm; outer ligules exserted 2–4 mm. Cypselae ± cylindro-fusiform to prismatic, 1.4–1.7 mm, ribs extending to apices, 5 more prominent than others; pappi persistent, of ca. 18, irregular needlelike teeth plus 1 bristle. Pollen mostly 4-porate (mean diam. 30 µm). 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 - 0.3
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Environment

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Usage

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Cultivation

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Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:149712-2
WFO ID wfo-0000061148
COL ID 3XL3W
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Malacothrix similis