Allium bisceptrum S.Watson

Twincrest onion (en)

Species

Angiosperms > Asparagales > Amaryllidaceae > Allium

Characteristics

Bulbs 1–7+, commonly producing either cluster of stalked, basal bulbels or filiform rhizomes to 1 dm, terminated by bulbels, rhizomes generally lost when specimens are collected, ovoid, 1–2 × 0.6–1.8 cm; outer coats enclosing 1 or more bulbs, light brown to gray, membranous, obscurely cellular-reticulate, cells rectangular, walls minutely sinuous, vertical, varying to irregular, all sinuous, without fibers; inner coats white to pink, cells obscure, quadrate. Leaves persistent, green at anthesis, 2–5, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, broadly channeled, 8–30 cm × 1–13 mm, margins entire. Scape persistent, solitary or clustered 1–3, erect, solid, terete, 10–30(–40) cm × 1–5 mm. Umbel persistent, erect, loose, 15–40-flowered, globose, bulbils unknown; spathe bracts persistent, 2, 3–4-veined, ovate to lanceolate, ± equal, apex acuminate. Flowers stellate, 7–10 mm; tepals spreading, lilac to white, lanceolate, ± equal, becoming papery in fruit, not carinate, margins entire, apex acuminate, not involute; stamens included; anthers purple; pollen yellow; ovary conspicuously crested; processes 6, central, distinct, flattened, triangular, margins papillose-denticulate; style included, linear, ± equaling stamens; stigma capitate, unlobed; pedicel 10–20 mm, often becoming flexuous and deflexed in fruit. Seed coat shining; cells each with minute, central papilla. 2n = 14, 28.
More
An onion family plant. A bulb plant. It grows to 30 cm high. The bulbs are 10-15 mm wide.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.3
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It grows naturally in Western North America from Oregon to California. It occurs in meadows and aspen groves, occasionally on open slopes.
More
Meadows and aspen groves, occasionally on open slopes
Light 7-9
Soil humidity 3-6
Soil texture 3-5
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 5-10

Usage

The bulbs are eaten raw or cooked. The leaves are eaten raw or cooked. The flowers are used raw or to flavour salads. The seed heads can be placed in hot ashes for a few minutes, then the seeds extracted and eaten.
Uses medicinal
Edible bulbs flowers leaves roots seeds
Therapeutic use Dietary Aid (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed or by division of clumps. Bulbs should be planted fairly deeply.
Mode divisions seedlings
Germination duration (days) 30 - 365
Germination temperacture (C°) 10
Germination luminosity light
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Allium bisceptrum flower picture by Justin Booher (cc-by-sa)

Distribution

Allium bisceptrum world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:527688-1
WFO ID wfo-0000755787
COL ID 5TVGY
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Allium bisceptrum Allium bisceptrum var. utahense Allium bisceptrum var. palmeri Allium palmeri Allium bisceptrum var. bisceptrum