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Munz's onion

Arizona onion, largeflower onion

Bulbs

usually solitary, not clustered on stout, primary rhizome, ovoid, 1–1.5 × 0.8–1.4 cm;

outer coats enclosing single bulb, reddish brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows proximal to roots, ± quadrate, without fibers;

inner coats pale brown to white or pink, cells obscure, quadrate.

1–5, without basal bulbels, ovoid, 1.5–2.5 × 1–2 cm;

outer coats enclosing 1 or more bulbs, brown, reticulate, cells usually coarse-meshed, open, fibrous;

inner coats whitish, cells vertically elongate and regular or obscure.

Leaves

persistent, withering from tip by anthesis, 1, basally sheathing, sheath not extending much above soil surface;

blade solid, terete, 15–25 cm × 0.5–1.5 mm.

persistent, green at anthesis, 2, sheathing;

blade solid, channeled, semiterete, 8–20 cm × 1–3 mm, margins entire.

Scape

persistent, solitary, erect, solid, terete, 15–35 cm × 1–2.5 mm.

persistent, solitary, erect, terete or ± 4-angled, 5–20 cm × 1–4 mm.

Umbel

persistent, erect, compact, 10–35-flowered, hemispheric, bulbils unknown;

spathe bracts persistent, 2–3, 5–7-veined, lanceolate to ovate, ± equal, apex abruptly acuminate.

persistent, erect, compact to loose, 10–20-flowered, hemispheric to globose, bulbils unknown;

spathe bracts persistent, 2–3, 3–5-veined, ovate to lanceolate, ± equal, apex acute to short-acuminate.

Flowers

campanulate, 6–8 mm;

tepals erect, white with greenish midveins, becoming deep pink to red in fruit, ovate to nearly round, ± equal, becoming papery in fruit, margins entire to finely denticulate, apex obtuse (rarely acute), shallowly emarginate;

stamens included;

anthers yellow;

pollen yellow;

ovary crested;

processes 6, prominent, ± triangular, margins entire, apex emarginate;

style linear, equaling stamens;

stigma capitate, 3-lobed, lobes slender, recurved;

pedicel spreading, straight, 7–12 mm, becoming rigid and ± reflexed in fruit.

campanulate, 8–12 mm;

tepals spreading, pink with deeper pink or reddish midveins, lanceolate, ± equal, becoming papery in fruit, not investing capsule, margins entire, apex obtuse to acuminate, midrib scarcely thickened;

stamens included;

anthers yellow or purple;

pollen yellow;

ovary usually conspicuously crested;

processes 6, central, usually connate in pairs across septa, ± erect, flattened, triangular, to 2 mm, margins entire, mostly well developed in fruit;

style linear, equaling stamens;

stigma capitate, unlobed or obscurely lobed;

pedicel 5–20 mm.

Seed

coat dull;

cells minutely roughened.

coat shining;

cells smooth, without central papillae.

2n

= 14.

= 14.

Allium munzii

Allium macropetalum

Phenology Flowering Apr–mid May. Flowering late Mar–Jun.
Habitat Clay soil on grassy slopes Desert plains and hills
Elevation 400–900 m (1300–3000 ft) 300–2500 m (1000–8200 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
AZ; CO; NM; TX; UT
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 253. FNA vol. 26.
Parent taxa Liliaceae > Allium Liliaceae > Allium
Sibling taxa
A. aaseae, A. abramsii, A. acuminatum, A. ampeloprasum, A. amplectens, A. anceps, A. atrorubens, A. bigelovii, A. bisceptrum, A. bolanderi, A. brandegeei, A. brevistylum, A. burlewii, A. campanulatum, A. canadense, A. cepa, A. cernuum, A. columbianum, A. constrictum, A. coryi, A. cratericola, A. crenulatum, A. crispum, A. cuthbertii, A. denticulatum, A. diabolense, A. dichlamydeum, A. dictuon, A. douglasii, A. drummondii, A. elmendorfii, A. falcifolium, A. fibrillum, A. fimbriatum, A. fistulosum, A. geyeri, A. gooddingii, A. haematochiton, A. hickmanii, A. hoffmanii, A. howellii, A. hyalinum, A. jepsonii, A. kunthii, A. lacunosum, A. lemmonii, A. macropetalum, A. macrum, A. madidum, A. membranaceum, A. monticola, A. neapolitanum, A. nevadense, A. nevii, A. nigrum, A. obtusum, A. oleraceum, A. paniculatum, A. parishii, A. parryi, A. parvum, A. passeyi, A. peninsulare, A. perdulce, A. platycaule, A. plummerae, A. praecox, A. punctum, A. rhizomatum, A. robinsonii, A. rotundum, A. runyonii, A. sanbornii, A. sativum, A. schoenoprasum, A. scilloides, A. serra, A. sharsmithiae, A. shevockii, A. simillimum, A. siskiyouense, A. speculae, A. stellatum, A. textile, A. tolmiei, A. tribracteatum, A. tricoccum, A. triquetrum, A. tuberosum, A. tuolumnense, A. unifolium, A. validum, A. victorialis, A. vineale, A. yosemitense
A. aaseae, A. abramsii, A. acuminatum, A. ampeloprasum, A. amplectens, A. anceps, A. atrorubens, A. bigelovii, A. bisceptrum, A. bolanderi, A. brandegeei, A. brevistylum, A. burlewii, A. campanulatum, A. canadense, A. cepa, A. cernuum, A. columbianum, A. constrictum, A. coryi, A. cratericola, A. crenulatum, A. crispum, A. cuthbertii, A. denticulatum, A. diabolense, A. dichlamydeum, A. dictuon, A. douglasii, A. drummondii, A. elmendorfii, A. falcifolium, A. fibrillum, A. fimbriatum, A. fistulosum, A. geyeri, A. gooddingii, A. haematochiton, A. hickmanii, A. hoffmanii, A. howellii, A. hyalinum, A. jepsonii, A. kunthii, A. lacunosum, A. lemmonii, A. macrum, A. madidum, A. membranaceum, A. monticola, A. munzii, A. neapolitanum, A. nevadense, A. nevii, A. nigrum, A. obtusum, A. oleraceum, A. paniculatum, A. parishii, A. parryi, A. parvum, A. passeyi, A. peninsulare, A. perdulce, A. platycaule, A. plummerae, A. praecox, A. punctum, A. rhizomatum, A. robinsonii, A. rotundum, A. runyonii, A. sanbornii, A. sativum, A. schoenoprasum, A. scilloides, A. serra, A. sharsmithiae, A. shevockii, A. simillimum, A. siskiyouense, A. speculae, A. stellatum, A. textile, A. tolmiei, A. tribracteatum, A. tricoccum, A. triquetrum, A. tuberosum, A. tuolumnense, A. unifolium, A. validum, A. victorialis, A. vineale, A. yosemitense
Synonyms A. fimbriatum var. munzii A. deserticola, A. reticulatum var. deserticola
Name authority (Ownbey & Aase ex Traub) McNeal: Aliso 13: 415. (1992) Rydberg: Bull. Torrey Bot. Club 31: 401. (1904)
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