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passey's onion

plains onion

Bulbs

2–3+, not rhizomatous, ovoid, 1–2 × 1.2–2 cm;

outer coats enclosing 1 or more bulbs, light brown, reticulate, fibrous;

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

2–20+, without basal bulbels, 1–2.5 × 1.2–2.8 cm;

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

inner coats whitish, cells regular, vertically elongate, walls not sinuous.

Leaves

persistent, green at anthesis, 2–3, sheathing;

blade solid, flat, ± falcate, 10–20 cm × 3–6 mm, margins entire.

persistent, green at anthesis, 3–5, sheathing;

blade solid, flat, channeled, 8–30 cm × 1–2(–3) mm, margins entire.

Scape

persistent, solitary, erect, terete or ± winged-angled, mostly 10–20 cm × 1–2.5 mm.

persistent, solitary, erect, ± terete, 10–20 cm × 1–3 mm.

Umbel

persistent, erect, compact, 8–27-flowered, hemispheric-globose, bulbils unknown;

spathe bracts persistent, 2–4, mostly 1-veined, ovate, ± equal, apex acuminate to caudate.

persistent, erect, loose, 5–25-flowered, hemispheric-globose, bulbils unknown;

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

Flowers

campanulate, 7–9 mm;

tepals erect, light pink, narrowly lanceolate to lance-ovate, becoming callous-keeled, persistent and permanently investing capsule, margins entire, apex acuminate, inner shorter and narrower than outer, outer strongly keeled and gibbous at base;

stamens included;

anthers yellow;

pollen yellow;

ovary obscurely crested;

processes 6, central, ± erect, rounded, minute, to 1 mm, margins entire;

style linear, equaling stamens;

stigma capitate, scarcely thickened, unlobed;

pedicel 10–18 mm.

urceolate, 7–10 mm;

tepals erect, white or pale pink with deep pink midribs to deep rose, lanceolate, ± equal, becoming callous-keeled and permanently investing capsule, margins entire, apex obtuse or acute;

stamens included;

anthers yellow or purple;

pollen yellow;

ovary crestless;

style linear, ± equaling stamens;

stigma capitate, unlobed or obscurely lobed;

pedicel 3–17 mm, ± 2 times perianth at anthesis, elongating in fruit.

Seed

coat shining;

cells smooth, each with minute, central papilla.

coat dull or shining;

cells minutely roughened.

Allium passeyi

Allium perdulce

Phenology Flowering Jun.
Habitat Shallow, stony, lithosolic soil over dolomitic limestone, hilltops
Elevation 1400–1600 m (4600–5200 ft)
Distribution
from FNA
UT
[BONAP county map]
from USDA
c North America
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Allium passeyi is known only from Box Elder County.

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

Varieties 2 (2 in the flora).

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

Key
1. Tepals deep rose, aging to purple; n Texas and e New Mexico to se South Dakota and adjacent Iowa
var. perdulce
1. Tepals white to light pink, aging pink; trans-Pecos Texas.
var. sperryi
Source FNA vol. 26, p. 242. FNA vol. 26, p. 241.
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. munzii, A. neapolitanum, A. nevadense, A. nevii, A. nigrum, A. obtusum, A. oleraceum, A. paniculatum, A. parishii, A. parryi, A. parvum, 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. macropetalum, 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. 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
Subordinate taxa
A. perdulce var. perdulce, A. perdulce var. sperryi
Name authority N. H. Holmgren & A. H. Holmgren: Brittonia 26: 309, figs. 1, 4. (1974) S. V. Fraser: Trans. Kansas Acad. Sci. 42: 124. (1940)
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