Allium jepsonii (ownbey & Aase ex Traub) S.s.denison & Mcneal

Jepson's onion (en)

Species

Angiosperms > Asparagales > Amaryllidaceae > Allium

Characteristics

Bulbs 1–2, not clustered on stout, primary rhizome, ovoid to subglobose, 1.5–2.5 × 1–2 cm; outer coats enclosing single bulb, gray-brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats light brown or white, cells obscure, quadrate. Leaves persistent, withering from tip by anthesis, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 22–42 cm × 1–4 mm. Scape persistent, solitary, erect, solid, terete, 25–37 cm × 1–3 mm. Umbel persistent, erect, ± compact, 20–60-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 3–4, 4–5-veined, ovate, ± equal, apex long-acuminate. Flowers campanulate, 7–8.5 mm; tepals erect, white, flushed with pink near dark pink midveins, ovate-elliptic, ± equal, becoming papery in fruit, margins erose, apex acute to apiculate, outer tepals with reflexed tips; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins erose; style linear, equaling stamens; stigma capitate, 3-lobed, lobes slender, recurved; pedicel 7–20 mm. Seed coat dull or shining; cells minutely roughened. 2n = 14.
More
An onion herb.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a Mediterranean climate plant.
Light 7-9
Soil humidity 1-5
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
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

Allium jepsonii unspecified picture

Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:271936-2
WFO ID wfo-0000756489
COL ID 5TXD7
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Allium jepsonii Allium sanbornii var. jepsonii