Roadless Areas
Home/Species/ Simil Onion

Allium simillimum

Henderson

Simil Onion

G4Apparently Secure Found in 7 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
Simil Onion (Allium simillimum). Photo by Kevin Faccenda, CC BY 4.0, via iNaturalist.
Kevin Faccenda, CC BY 4.0
Simil Onion (Allium simillimum). Photo by Matt Berger, CC BY 4.0, via iNaturalist.
Matt Berger, CC BY 4.0
Simil Onion (Allium simillimum). Photo by Kevin Faccenda, CC BY 4.0, via iNaturalist.
Kevin Faccenda, CC BY 4.0
Simil Onion (Allium simillimum). Photo by Emma, CC BY 4.0, via iNaturalist.
Emma, CC BY 4.0
Simil Onion (Allium simillimum). Photo by Mark Pollock, CC BY 4.0, via iNaturalist.
Mark Pollock, CC BY 4.0
Identity
Unique IDELEMENT_GLOBAL.2.127918
Element CodePMLIL02270
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderAsparagales
FamilyAmaryllidaceae
GenusAllium
Other Common Names
simil onion (EN)
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Review Date1988-11-18
Change Date1988-11-18
Range Extent Comments
Central and sw. ID, sw. MT. Regional endemic.
Ecology & Habitat

Description

Dwarf Onion is a perennial herb, which can be up to 1-2 cm high and arises from solitary, egg-shaped bulbs with brown or gray honeycombed coats. The 2 sickle-shaped leaves, which are 2-5 mm wide and more than twice as long as the stem, are concave in cross-section and arise from near the base of the stem. Few to several flowers are borne on stalks, which are 4-8 mm long, in a hemispherical inflorescence that is subtended by 2 papery, elliptic bracts, at the top of the slightly flattened stem. Each flower has 6 lance-shaped, white and green to pink-colored, petal-like tepals, which are 5-9 mm long, and 6 stamens, which are shorter than the tepals. The ovary has 3 rounded crests on top.

Diagnostic Characteristics

ALLIUM PARVUM is similar but has a strongly flattened stem. A. BRANDEGEI is also similar but has leaves that are less than twice the length of the stem.
Other Nations (1)
United StatesNNR
ProvinceRankNative
MontanaS2Yes
IdahoSNRYes
Plant Characteristics
Economic Value (Genus)Yes
Roadless Areas (7)
Idaho (7)
AreaForestAcres
Boulder - White CloudsSalmon-Challis National Forest139,297
Boulder - White CloudsSawtooth National Forest322,653
NeedlesPayette National Forest131,279
Peace RockBoise National Forest191,734
Pioneer MountainsSalmon-Challis National Forest172,460
Pioneer MountainsSawtooth National Forest119,563
SeceshPayette National Forest248,088
References (2)
  1. Flora of North America Editorial Committee (FNA). 2002a. Flora of North America north of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.
  2. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.