Allium membranaceum

Ownbey ex Traub

Pl. Life 28: 63. 1972.

IllustratedEndemic
Treatment appears in FNA Volume 26. Treatment on page 256. Mentioned on page 230, 253.

Bulbs 1–3, producing bulbels in basal cluster around roots, ovoid, 1–1.6 × 0.9–1.4 cm; outer coats enclosing 1 or more bulbs, brown, membranous, obscurely cellular-reticulate, cells quadrate, walls very sinuous, without fibers; inner coats white or pink, cells obscure, quadrate. Leaves persistent, green at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, 15–40 cm × 3–5 mm, margins entire. Scape persistent, solitary, erect, solid, terete, 15–40 cm × 1–3 mm. Umbel persistent, erect, loose, 15–35-flowered, ± globose, bulbils unknown; spathe bracts persistent, 2, 4–6-veined, lanceolate, ± equal, apex acuminate, setaceous. Flowers stellate, 7–12 mm; tepals spreading, pink or less commonly white, ovate to elliptic, ± equal, becoming papery in fruit, not carinate, margins entire, apex acute to acuminate, not involute; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, central, triangular, short, margins minutely denticulate; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–20 mm. Seed-coat dull; cells each with minute, central papilla. 2n = 14.


Phenology: Flowering May–Jun.
Habitat: Wooded, shady slopes
Elevation: 200–1400 m

Discussion

Allium membranaceum is found in the foothills of the northern and central Sierra Nevada.

Selected References

None.

Lower Taxa

None.

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

... more about "Allium membranaceum"
versatile +  and dorsifixed +
cordate +  and linear +
Acute (?) +  and Acuminate (?) +
Dale W. McNeal Jr. +  and T. D. Jacobsen +
Ownbey ex Traub +
whorled +, opposite +  and alternate +
dilated +
straight +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
falcate +, flat +, channeled +, terete +  and linear +
3mm;5mm +
conspicuous +
1cm +  and 1.6cm +
1 +  and 3 +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
roughened +  and smooth +
quadrate +
membranous +
200–1400 m +
connate-coroniform +  and dilated +
sessile +  and pedicellate +
unisexual +  and bisexual +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
loculicidal +
membranaceous +  and leathery +
Wooded, shady slopes +
paired +, paniculate +  and racemose +
pink +  and white +
persistent +
denticulate +
gray +  and brown +
crested +
many;several +
spreading +  and erect +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
membranous +
zygomorphic +  and actinomorphic +
Flowering May–Jun. +
triangular +
persistent +
15cm +  and 40cm +
1mm +  and 3mm +
wind-distributed +
1 +  and many +
obovoid +
Illustrated +  and Endemic +
adnate +  and free +
1 +  and several +
Allium membranaceum +
species +
persisting +
distinct +
not carinate +, ovate +  and elliptic +
sepaloid +  and petaloid +
narrower +
15-35-flowered +
persistent +
sinuous +
9 +, 8 +  and 7 +