Allium triquetrum

Linnaeus

Sp. Pl. 1: 300. 1753.

Introduced
Treatment appears in FNA Volume 26. Treatment on page 257. Mentioned on page 224, 230, 258.

Bulbs 5–20+, not clustered on stout primary rhizome, rhizomes absent, increase bulbs absent or ± equaling parent bulbs, never appearing as basal cluster, ovoid, 1–2 × 1–2 cm; outer coats enclosing renewal bulbs, ± translucent, yellowbrown, obscurely cellular-reticulate, thin, membranous, meshes delicate, cells vertically elongate, contorted, without fibers; inner coats white, cells obscure, quadrate, or not visible. Leaves persistent, green at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, not falcate, ± carinate, 15–50 cm × 3–15 mm, margins entire. Scape persistent, clustered, 1–4, erect, solid, sharply 3-angled, 10–40 cm × 1–10 mm. Umbel persistent, lax, loose, 3–15-flowered, ± 1-sided, bulbils unknown; spathe bracts persistent, 1–2, 3-veined, narrowly lanceolate, ± equal, apex acute. Flowers becoming pendent, campanulate, 10–18 mm; tepals erect to spreading, white with prominent green midrib, lanceolate, ± equal, becoming membranous in fruit, margins entire, apex acute; stamens included; anthers yellow; pollen yellow; ovary crestless; style linear, ± equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 15–25 mm. Seeds appendaged with evident caruncle. Seed-coat dull; cells minutely roughened. 2n = 18.


Phenology: Flowering Mar–Apr.
Habitat: Disturbed sites
Elevation: 0–100 m

Distribution

V26 472-distribution-map.jpg

Introduced; Calif., sw Europe

Discussion

Allium triquetrum is a garden escape, introduced from southwestern Europe, and is potentially a noxious weed.

Selected References

None.

Lower Taxa

None.

"thicker" is not a number."broad" is not a number.

... more about "Allium triquetrum"
versatile +  and dorsifixed +
cordate +  and linear +
Dale W. McNeal Jr. +  and T. D. Jacobsen +
Linnaeus +
whorled +, opposite +  and alternate +
dilated +
straight +
15 cm150 mm <br />0.15 m <br /> (50 cm500 mm <br />0.5 m <br />) +
carinate +  and not falcate +
3mm;15mm +
conspicuous +
5 +  and 20 +
not visible +  and obscure +
roughened +  and smooth +
quadrate +  and elongate +
Calif. +  and sw Europe +
0–100 m +
connate-coroniform +  and dilated +
sessile +  and pedicellate +
unisexual +  and bisexual +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
loculicidal +
membranaceous +  and leathery +
Disturbed sites +
paired +, paniculate +  and racemose +
persistent +
crested;3-lobed +
many;several +
spreading +  and erect +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
membranous +
zygomorphic +  and actinomorphic +
Flowering Mar–Apr. +
1cm +  and 2cm +
1 cm10 mm <br />0.01 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
persistent +
10cm +  and 40cm +
3-angled +
1mm +  and 10mm +
wind-distributed +
1 +  and many +
obovoid +
Introduced +
adnate +  and free +
1 +  and several +
Allium triquetrum +
species +
persisting +
distinct +
erect +  and spreading +
lanceolate +
membranous +
sepaloid +  and petaloid +
narrower +
3-15-flowered +
persistent +
9 +, 8 +  and 7 +