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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.
13 genera, 750–800 species: worldwide. Many cultivated for food, ornamental. —Scientific Editor: Thomas J. Rosatti.
Key to Alliaceae
Outer bulb coat generally brown to gray, inner generally white. Stem: scapose, cylindric, triangular in ×-section, or flat. Leaf: basal, 1–5 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.Key to Allium
700 species: generally northern temperate, especially California. (Latin: garlic) [McNeal & Jacobsen 2002 FNANM 26:224–276] Replanting bulbs after study essential for survival of plant; 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.
Bulb 10–16 mm, ovoid, bulblets in tight cluster at base or not; outer coat sculpture obscure, cells ± square, walls very wavy. Stem: 15–40 cm. Leaf: 2–3, ± = stem, flat. Inflorescence: flowers 15–35; pedicels 10–20 mm, slender. Flower: 7–12 mm; perianth parts spreading, ovate to elliptic, acute, entire, white to pale pink, in fruit papery; ovary crests 6, short, triangular.
n=7. Uncommon. Wooded slopes; 150–1400 m. Klamath Ranges, Cascade Range Foothills, n&c Sierra Nevada Foothills, s High Sierra Nevada. May–Jun [Online Interchange]
Previous taxon: Allium marvinii
Next taxon: Allium monticola
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 4 2015
Citation for this treatment: [Author of taxon treatment] 2013. Allium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=76531, accessed on Oct 4 2015
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|Geographic subdivisions indicated for the distribution of Allium membranaceum|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(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).
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