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fragile onion, scilla-like onion

Runyon's onion

Bulbs

1–5, not clustered on stout, primary rhizome, increase bulbs ± equaling parent bulbs, never appearing as basal cluster, rhizomes absent, globose to ovoid, 1–2 cm × 8–20 mm;

outer coats enclosing renewal bulbs, reddish or brownish, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers;

inner coats white or light brown, cells absent or obscure and ± quadrate.

1–3, bearing cluster of short-stalked, basal bulbels, ovoid, 1.2–2 × 1.2–2 cm;

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

inner coats whitish, cells contorted, walls very sinuous.

Leaves

deciduous with scape after seeds mature, 2, basally sheathing, sheaths not extending much above soil surface;

blade solid, flat, falcate, 6–15 cm × 2–4 mm, margins entire or obscurely papillose.

green at anthesis, persistent, 3–6, basally sheathing;

blade solid, flat, channeled, 10–40 cm × 1–4 mm, margins entire.

Scape

usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, strongly flattened, 2-edged or winged distally, wings obscurely papillose, 4–8 cm × 1–3 mm.

persistent, often 2 or more successively produced from single bulb, erect, ± terete, 10–45 cm × 1–4 mm.

Umbel

decisuous with scape, erect, compact, 5–12-flowered, hemispheric, bulbils unknown;

spathe bracts persistent, 2–3, 3-veined, broadly ovate, ± equal, apex acute.

persistent, erect, loose, usually 10–25-flowered, hemispheric-globose, bulbils unknown;

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

Flowers

campanulate, 6–8 mm;

tepals erect, white or pinkish with green midribs, becoming reddish purple, broadly elliptic-oblong, ± equal, becoming rigid, papery and ± connivent over fruit, margins entire, apex obtuse, not involute at tip;

stamens included;

anthers purple;

pollen white to gray;

ovary crestless or obscurely crested;

processes 3, central, rounded, margins entire;

style linear, equaling stamens;

stigma capitate, unlobed or minutely 3-lobed;

pedicel 2–10.5(–18.5 in fruit) mm.

urceolate, 5–7 mm;

tepals erect, white with pinkish midribs, aging to pink, lanceolate, ± equal, becoming callous-keeled and permanently investing capsule, margins entire, apex obtuse or even emarginate to acute;

stamens ± equaling tepals;

anthers yellow;

pollen yellow;

ovary crestless;

style linear, equaling stamens;

stigma capitate, unlobed or obscurelylobed, pedicel 8–28 mm, elongating in fruit.

Seed

coat dull;

cells smooth.

coat shining;, cells smooth.

2n

= 14.

= 14.

Allium scilloides

Allium runyonii

Phenology Flowering Mar–Apr. Flowering Mar–Apr.
Habitat Barren, gravelly soils, arid interior slopes and ridges well back from Columbia River Sandy soils, Rio Grande plains
Elevation 300–1300 m (1000–4300 ft) 10–200 m (0–700 ft)
Distribution
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
from USDA
Tex Allium runyonii is known only from extreme southern Texas
[BONAP county map]
Discussion

Of conservation concern.

Allium scilloides is known only from east of the Cascades.

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

Allium runyonii is known only from extreme southern Texas.

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

Source FNA vol. 26, p. 275. 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. 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. 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. perdulce, A. platycaule, A. plummerae, A. praecox, A. punctum, A. rhizomatum, A. robinsonii, A. rotundum, 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
Name authority Douglas ex S. Watson: Proc. Amer. Acad. Arts 14: 229. (1879) Ownbey: Res. Stud. State Coll. Wash. 18: 198, fig. 4. (1951)
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