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dotted onion, punctate onion

Douglas' onion

Bulbs

1–3, not clustered on stout primary rhizome, ovoid to subglobose, 1–2 × 0.9–1.7 cm;

outer coats enclosing 1 or more bulbs, brown to yellow-brown or gray, membranous, ± prominently cellular-reticulate, cells in ± regular vertical rows, narrowly rectangular, transversely elongate, without fibers;

inner coats white, cells obscure, narrowly rectangular, transversely elongate, or quadrate.

1–4, not clustered on stout, primary rhizomes, ovoid, 1.2–3 × 1–2 cm;

outer coats enclosing 1 or more bulbs, light brown, membranous, lacking cellular reticulation, or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers;

inner coats white, sometimes pink, cells obscure, quadrate or linear.

Leaves

usually deciduous with scape, green or withering only at tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface;

blade solid, flat, falcate, 9–18 cm × 2–3 mm, margins entire.

usually persistent, green at anthesis, 2, basally sheathing, sheaths not extending much above soil surface;

blade solid, flat, falcate, 9–28 cm × (2–)5–15 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, ± flattened, not winged, 3–10 cm × 1–2 mm.

persistent, solitary, erect, solid, terete, not expanded proximal to inflorescence, (10–)20–30(–40) cm × 1–4 mm.

Umbel

persistent, erect, ± compact, 6–20-flowered, hemispheric, bulbils unknown;

spathe bracts persistent, 2, 6–9-veined, lanceolate to ovate, ± equal, apex acute to abruptly acuminate.

persistent, erect, compact, 25–50-flowered, hemispheric to globose, bulbils unknown;

spathe bracts persistent, 3, 4–6-veined, ovate, ± equal, apex acute.

Flowers

narrowly campanulate, 6–13 mm;

tepals erect, white to pinkish with narrow to very broad, purple midvein, oblong-lanceolate, ± equal, becoming papery, investing capsule in fruit, margins entire, apex obtuse;

stamens included;

anthers light yellow;

pollen yellow;

ovary crested;

processes 3, central, low, rounded, broad, margins entire;

style linear, equaling stamens;

stigma capitate, scarcely thickened, unlobed;

pedicel 5–11 mm.

± stellate, (6–)7–8(–10) mm;

tepals spreading, light pink to purple with prominent green midribs, narrowly lanceolate, ± equal, becoming papery in fruit, margins entire, apex acuminate;

stamens equaling tepals or exserted;

anthers blue-gray;

pollen white to light gray;

ovary crested;

processes 6, 2 per lobe, low, rounded, margins entire;

style exserted, linear;

stigma capitate, unlobed;

pedicel 15–30 mm.

Seed

coat dull;

cells smooth.

coat shining;

cells smooth.

2n

= 14.

= 14.

Allium punctum

Allium douglasii

Phenology Flowering May–Jun. Flowering May–Jul.
Habitat Sandy, rocky, or clay soils on open slopes and flats Winter-wet, shallow soils on rock outcrops
Elevation 1300–1600 m (4300–5200 ft) 400–1300 m (1300–4300 ft)
Distribution
from FNA
CA; NV; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 26, p. 270. FNA vol. 26, p. 267.
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. 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. 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. 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. hendersonii
Name authority L. F. Henderson: Rhodora 32: 23. (1930) Hooker: Fl. Bor.-Amer. 2: 184, plate 197. (1838)
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