Allium amplectens

Torrey

Pacif. Railr. Rep. 4(5): 148. 1857.

Endemic
Synonyms: Allium acuminatum var. gracile Alph. Wood Allium attenuifolium Kellogg Allium attenuifolium var. monospermum (Jepson) Jepson Allium monospermum A. Gray Allium occidentale S. Watson Allium serratum
Treatment appears in FNA Volume 26. Treatment on page 262. Mentioned on page 231, 263.

Bulbs 1–15+, increase bulbs absent or ± equaling parent bulbs, never appearing as basal cluster, not clustered on stout primary rhizome, ovoid to ± globose, 0.6–1.5 × 0.6–1.3 cm; outer coats enclosing 1 or more bulbs, brown, prominently cellular-reticulate, membranous, cells in ± vertical rows, forming irregular herringbone pattern, transversely elongate, V-shaped, without fibers; inner coats usually dark red, sometimes white to pink, cells obscure, quadrate. Leaves persistent, withering from tip at anthesis, 2–4, basally sheathing, sheaths not extending much above soil surface; blade solid, subterete or ± channeled, 10–36 cm × 0.5–2 mm, margins entire. Scape persistent, solitary, erect, solid, terete, 15–50 cm × 3–5 mm. Umbel shattering after seeds mature, each flower deciduous with its pedicel as a unit, erect, compact, 10–50-flowered, hemispheric, bulbels unknown; spathe bracts persistent, 2–3, 6–13-veined, ovate, ± equal, apex short-acuminate. Flowers stellate, 5–9 mm; tepals spreading at anthesis, white to pink, lanceolate, ± equal, becoming papery and connivent over capsule, margins entire, apex acute; stamens included; anthers yellow or purple; pollen yellow; ovary crested; processes 6, lateral, ± prominent, ± rectangular, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 4–16 mm. Seed-coat dull; cells minutely roughened. 2n = 14, 21, 28.


Phenology: Flowering Apr–Jul.
Habitat: Clay soils, including serpentine, dry slopes, and open plains
Elevation: 0–1800 m

Distribution

B.C., Calif., Oreg., Wash.

Discussion

All three chromosome races of Allium amplectens are widespread. The triploids are achiasmatic, causing a breakdown in the first meiotic division. This is followed by a normal second division resulting in pollen dyads that are, presumably, nonfunctional; seeds are produced by apomixis. The diploids and tetraploids produce normal pollen, in tetrads, that appears to be functional.

Selected References

None.

Lower Taxa

None.

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

... more about "Allium amplectens"
28 +, 21 +  and 14 +
purple +  and yellow +
versatile +  and dorsifixed +
cordate +  and linear +
white +  and pink +
Dale W. McNeal Jr. +  and T. D. Jacobsen +
Torrey +
whorled +, opposite +  and alternate +
dilated +
straight +
10 cm100 mm <br />0.1 m <br /> (36 cm360 mm <br />0.36 m <br />) +
channeled +  and subterete +
0.5mm;2mm +
conspicuous +
0.6cm +  and 1.5cm +
1 +  and 15 +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
acute +  and lanceolate +
roughened +  and smooth +
quadrate +
membranous +
B.C. +, Calif. +, Oreg. +  and Wash. +
0–1800 m +
connate-coroniform +  and dilated +
10-50-flowered +
unisexual +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
loculicidal +
membranaceous +  and leathery +
Clay soils, including serpentine, dry slopes, and open plains +
paired +, paniculate +  and racemose +
white +  and pink +
persistent +
white +  and pink +
acute +  and lanceolate +
gray +  and brown +
v--shaped +  and elongate +
crested +
many;several +
spreading +  and erect +
0.4 cm4 mm <br />0.004 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
membranous +
zygomorphic +  and actinomorphic +
Flowering Apr–Jul. +
rectangular +
Pacif. Railr. Rep. +
persistent +
15cm +  and 50cm +
3mm +  and 5mm +
wind-distributed +
1 +  and many +
obovoid +
W2 +  and Endemic +
adnate +  and free +
1 +  and several +
Allium acuminatum var. gracile +, Allium attenuifolium +, Allium attenuifolium var. monospermum +, Allium monospermum +, Allium occidentale +  and Allium serratum +
Allium amplectens +
species +
persisting +
distinct +
petal-like +
sepaloid +  and petaloid +
narrower +
9 +, 8 +  and 7 +