Allium stellatum Fraser ex Ker Gawl.
AUTUMN ONION
  Monocotyledoneae   Liliaceae   Allium

Allium stellatum
© Copyright Jean Obrist 2012 · -1
Allium stellatum

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Names
Scientific source:

Supported by
Associates · map
FamilyScientific name @ source (records)
Colletidae  Colletes kincaidii @ AMNH_BEE (1)

Hylaeus annulatus @ AMNH_BEE (1)
Halictidae  Lasioglossum versans @ AMNH_BEE (5)
Megachilidae  Heriades carinata @ AMNH_BEE (1)

Hoplitis pilosifrons @ AMNH_BEE (1)
Miridae  Labopidea planifrons @ AMNH_PBI (1)
Pucciniaceae  Uromyces sporoboli @ BPI (1)

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Allium stellatum   Nutt. ex Ker Gawl.

Wild Onion

Allium stellatum plant2

Family - Liliaceae

Habit - Perennial forb from a bulb.

Allium stellatum base Base of plant.

Allium stellatum bulb2 Bulbs.

Stems - Bulbs to 4 cm, with a papery outer coating and slightly thickened roots. Aerial stems to 60 cm tall, erect, terete, glabrous, sometimes glaucous, bent at the apex when immature, becoming erect with age, green.

Allium stellatum stem Portion of stem and persistent, flat leaf blade.

Leaves - Basal or nearly so, to 40 cm long, 5 mm broad or less, flattened, linear, present during anthesis, light green.

Inflorescence - Terminal umbel with numerous flowers, nodding when immature. Bulblets absent. Pedicels much longer than the flowers, glabrous, purplish in strong sun, to 2 cm long.

Allium stellatum inflorescence3 Inflorescence.

Allium stellatum inflorescence
These views illustrate the hooked peduncle of an immature inflorescence.

Flowers - Perianth pink, widely spreading, 6-parted, the tepals to 7 mm long, elliptic, typically acute at the apex, glabrous. Stamens 6, erect, exserted beyond the perianth parts. Filaments terete, pink, glabrous. Anthers yellow when fresh, quickly becoming brown. Style pink, terete, glabrous, shorter than or equaling the stamens.

Allium stellatum inflorescence2 Flowers.

Allium stellatum flower

Allium stellatum flower2

Fruits - Capsules 3-5 mm long, obovoid, 3-lobed, each lobe with a pair of hornlike, triangular projections near the top. Seeds black.

Allium stellatum seeds Partially dehisced fruits.

Flowering - July - November.

Habitat - Glades, bluffs, open dry woods, roadsides.

Origin - Native to U.S.

Other info. - This showy species is reasonably common in Missouri glades south of the Missouri River. It is the latest blooming onion in Missouri and is easy to identify in the field. The papery-covered bulb, pink flowers, and flat, persistent leaves are good characters to look for. Note that A. stellatum can sometimes be confused with the closely related A. cernuum Roth , which looks similar. The latter species has nodding inflorescences ( cernuum means "nodding"), but A. stellatum does this as well when not fully mature. The inflorescence of A. stellatum becomes erect with time. A more reliable difference between the two plants is the flower shape. A. stellatum has a spreading and open perianth, whereas the perianth of A. cernuum is campanulate (bell-shaped).

The natural range of this species is peculiar, apparently comprising two disjunct populations. It is found in Missouri and adjoining states, and separately in the north-central U.S. and into Canada.

Photographs taken in Eminence, MO., 9-21-03 (DETenaglia); also at Shaw Nature Reserve, Franklin County, MO, 8-19-2007; Taum Sauk State Park, Iron County, MO, 7-18-2011; Ha Ha Tonka State Park, Camden County, MO, 9-2-2012; and Victoria Glade, Jefferson County, MO, 9-7-2014 (SRTurner).


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Allium stellatum Fraser ex Ker Gawl.
autumn onion

Image of Allium stellatum

General Information
Symbol: ALST
Group: Monocot
Family: Liliaceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : CAN   N
L48   N
Data Source and Documentation
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Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Allium thumbnails at the Plants Gallery

Tracey Slotta. Provided by ARS Systematic Botany and Mycology Laboratory . United States, MO, Allenton. Usage Requirements .

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 498. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .

slideshow

Synonyms

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Liliopsida – Monocotyledons
Subclass Liliidae
Order Liliales
Family Liliaceae – Lily family
Genus Allium L. – onion
Species Allium stellatum Fraser ex Ker Gawl. – autumn onion

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
Tennessee glade onion Endangered
Noxious Weed Information
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds .
Arkansas Allium
wild onion, wild garlic Noxious weed

Wetland Status

Interpreting Wetland Status

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (ALST)
CalPhotos (ALST)
Flora of North America (ALST)
Integrated Taxonomic Information System (ALST)
Kemper Center for Home Gardening (ALST)
Lady Bird Johnson Wildflower Center Native Plant Information Network (ALST)
Native American Ethnobotany (University of Michigan - Dearborn) (ALST)
University of Tennessee Herbarium (Distribution) (ALST)
University of Wisconsin - Stevens Point Freckmann Herbarium (ALST)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Allium+stellatum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Allium+stellatum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

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Number of matches : 12
Query: SELECT * FROM img WHERE ready=1 and taxon like "Allium stellatum%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Allium stellatum
Allium stellatum
Prairie Onion
ID: 0000 0000 0203 0601 [detail]
© 2003 Jeff Abbas

Allium stellatum
Allium stellatum
Prairie Onion
ID: 0000 0000 0203 0602 [detail]
© 2003 Jeff Abbas

Allium stellatum
Allium stellatum
ID: 0000 0000 0506 1075 [detail]
© 2006 Louis-M. Landry

Allium stellatum
Allium stellatum
ID: 0000 0000 0506 1076 [detail]
© 2006 Louis-M. Landry

Allium stellatum
Allium stellatum
ID: 0000 0000 0506 1077 [detail]
© 2006 Louis-M. Landry

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4967 [detail]
© 2016 Keir Morse

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4968 [detail]
© 2016 Keir Morse

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4969 [detail]
© 2016 Keir Morse

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4970 [detail]
© 2016 Keir Morse

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4971 [detail]
© 2016 Keir Morse

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4972 [detail]
© 2016 Keir Morse

Allium stellatum
Allium stellatum
Autumn Onion
ID: 0000 1111 1234 4973 [detail]
© 2016 Keir Morse

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