Jepson eFlora: Taxon page
Vascular Plants of California
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Allium unifolium


Higher Taxonomy
Family: AlliaceaeView DescriptionDichotomous Key
Common Name: ONION or GARLIC FAMILY
Habit: Perennial herb; bulb 1 or on rhizomes, reforming each year; bulblets at bulb bases or on rhizomes; outer bulb coat brown, red-brown, yellow-brown, or gray; inner coats generally white (pink, red, or yellow); onion odor, taste present (except Nothoscordum). Stem: scapose, cylindric, sometimes flat or triangular. Leaf: basal, sheathing stem, linear [or not], cylindric, channeled or flat, generally +- withering from tip by flowering. Inflorescence: umbel (1-flowered in Ipheion), bracts generally 2, splitting and appearing 2+ or not, +- fused, enclosing flower buds, scarious. Flower: perianth parts 6 in 2 petal-like whorls, +- free to fused in lower 1/3--1/2; stamens 6, fused to perianth, filaments widened at base, anthers attached at middle; ovary superior, 3-lobed, chambers 3, ovules 2+ per chamber, style 1, stigma entire or +- 3-lobed. Fruit: capsule, loculicidal. Seed: black, sculpture net-like, smooth, or granular.
Genera In Family: 13 genera, 750--800 species: worldwide. Note: Many cultivated for food, ornamental.
eFlora Treatment Author: Dale W. McNeal
Scientific Editor: Thomas J. Rosatti.
Genus: AlliumView DescriptionDichotomous Key


Common Name: ONION, GARLIC
Habit: Outer bulb coat generally brown to gray, inner generally white. Stem: scapose, cylindric, triangular in ×-section, or flat. Leaf: basal, 1--5[12] per stem, linear, cylindric, channeled, or flat, generally withering from tip before flower. Inflorescence: umbel, flowers 3--many, rarely all or in part replaced by bulblets; bracts generally 2--4, obvious, +- fused, scarious. Flower: perianth parts +- free, generally with darker or contrasting midvein, outer generally wider; filaments fused into a ring; ovary with 0, 3, or 6 crests, ovules generally 2 per chamber. Seed: obovoid, generally unappendaged.
Etymology: (Latin: garlic) Note: Replanting bulbs after study essential for survival of pl; shape, arrangement of cells of outer bulb coat (outer bulb coat sculpture) generally important in identification, generally determined only with magnification; color of outer bulb coat may be masked by substrate; stem lengths from top of bulb to base of inflorescence, not from substrate surface.
eFlora Treatment Author: Dale W. McNeal & Julie A. Kierstead
Reference: McNeal & Jacobsen 2002 FNANM 26:224--276; Wheeler et al. 2013 Amer J Bot 100:701--711
Allium unifolium Kellogg
NATIVE
Habit: Bulb 1--2 cm, ovoid to oblique-ovoid, +- 0 at flower; rhizomes 1--3, generally 3--5 cm, obvious, with new bulbs at tips; outer bulb coat pale brown, sculpture obscure, cells +- rectangular. Stem: 30--80 cm. Leaf: 2--3, < stem, widely channeled or +- flat, keeled. Inflorescence: flowers generally 15--35; pedicels 15--40 mm. Flower: 11--15 mm; perianth parts ascending, ovate to obovate, entire, pink or white; ovary crests 6 longitudinal ridges. Chromosomes: n=7.
Ecology: Uncommon. Moist clay or serpentine, especially grassy streambanks; Elevation: < 1100 m. Bioregional Distribution: NW, CW; Distribution Outside California: Oregon. Flowering Time: May--Jun
Jepson eFlora Author: Dale W. McNeal & Julie A. Kierstead
Reference: McNeal & Jacobsen 2002 FNANM 26:224--276; Wheeler et al. 2013 Amer J Bot 100:701--711
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Allium tuolumnense
Next taxon: Allium validum

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Botanical illustration including Allium unifolium

botanical illustration including Allium unifolium

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Citation for this treatment: Dale W. McNeal & Julie A. Kierstead 2023, Allium unifolium, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=12657, accessed on April 14, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 14, 2024.

Allium unifolium
click for enlargement
©2015 Barry Breckling
Allium unifolium
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©2007 Neal Kramer
Allium unifolium
click for enlargement
©2007 Neal Kramer
Allium unifolium
click for enlargement
©2010 Barry Breckling
Allium unifolium
click for enlargement
©2007 Neal Kramer

More photos of Allium unifolium
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Geographic subdivisions for Allium unifolium:
NW, CW
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).