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), widely naturalized (Mexico), widely naturalized (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.

"thicker" is not a number.

... more about "Asphodelus fistulosus"
dorsifixed +
cordate +  and linear +
Gerald B. Straley† +  and Frederick H. Utech +
Linnaeus +
whorled +, opposite +  and alternate +
dilated +
membranous +
flattened +  and cylindrical +
sheathing +  and involucrate +
persistent +
lanceolate +
tunicate +  and scaly +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Onion-weed +
Calif. +, N.Mex. +, Tex. +, sw Europe +, sw Asia +, n Africa +, widely naturalized (Australia) +, widely naturalized (Mexico) +, widely naturalized (New Zealand) +  and expected elsewhere +
0–1400 m +
connate-coroniform +  and dilated +
sessile +  and pedicellate +
unisexual +  and bisexual +
loculicidal +
globose +
Roadsides, fields, waste places +
bracteate +  and many-flowered +
paniculate +  and racemose +
persistent +
5cm;35cm +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
superior +  and inferior +
zygomorphic +  and actinomorphic +
Flowering late winter–spring. +
15 cm150 mm <br />0.15 m <br /> (70 cm700 mm <br />0.7 m <br />) +
wind-distributed +
6 +  and 3 +
Introduced +  and Illustrated +
staminodial +
subequal +
unbranched +  and branched +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
1 +  and several +
Asphodelus fistulosus +
Asphodelus +
species +
white;pale-pink +
connate +  and distinct +
5mm;12mm +
erect +  and spreading +
obtuse +  and oblong +
2mm;3mm +
sepaloid +  and petaloid +
narrower +
brown +  and dark-pink +
perennial +  and annual +
3 +  and 2 +