Asphodelus fistulosus

Linnaeus
Sp. Pl. 1: 309. 1753.
Common names: Onion-weed
IntroducedIllustrated
Treatment appears in FNA Volume 26. Treatment on page 218. Mentioned on page 217, 219.

Plants annuals or short-lived perennials; root crowns thickened with many fibrous roots. Stems branched or unbranched, 20–70 cm. Leaves 5–35 cm × 2–4 mm; blade cylindrical or slightly flattened adaxially, hollow, glabrous except on margins. Inflorescences simple racemes to open panicles with ascending branches, 15–70 cm; bracts white, 4–7 mm. Flowers diurnal, closing in evening and during cloudy weather; tepals white to pale pink, oblong, obtuse, 5–12 × 2–3 mm, vein dark pink or brown; longest stamens equaling style. Capsules 5–7 mm, transversely wrinkled. Seeds 3–4 mm, rugose. 2n = 28, 56.


Phenology: Flowering late winter–spring.
Habitat: Roadsides, fields, waste places
Elevation: 0–1400 m

Distribution

V26 381-distribution-map.jpg

Introduced; Calif., N.Mex., Tex., sw Europe, sw Asia, n Africa, widely naturalized (Australia, Mexico, New Zealand), expected elsewhere.

Discussion

Asphodelus fistulosus has become a noxious weed in California and in other places with Mediterranean climates worldwide.

Selected References

None.

Lower Taxa

None.

... more about "Asphodelus fistulosus"
Gerald B. Straley† +  and Frederick H. Utech +
Linnaeus +
Onion-weed +
Calif. +, N.Mex. +, Tex. +, sw Europe +, sw Asia +, n Africa +, widely naturalized (Australia +, Mexico +, New Zealand) +  and expected elsewhere. +
0–1400 m +
Roadsides, fields, waste places +
Flowering late winter–spring. +
Introduced +  and Illustrated +
Asphodelus fistulosus +
Asphodelus +
species +