Difference between revisions of "Allium constrictum"
Syst. Bot. 13: 211. 1988.
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|name=Allium douglasii var. constrictum | |name=Allium douglasii var. constrictum | ||
|authority=Ownbey & Mingrone | |authority=Ownbey & Mingrone | ||
| + | |rank=variety | ||
|publication_title=in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. | |publication_title=in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. | ||
|publication_place=1: 747. 1969 | |publication_place=1: 747. 1969 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Allium constrictum | name=Allium constrictum | ||
| − | |||
|authority=(Ownbey & Mingrone) P. M. Peterson | |authority=(Ownbey & Mingrone) P. M. Peterson | ||
|rank=species | |rank=species | ||
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|publication year=1988 | |publication year=1988 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V26/V26_499.xml |
|genus=Allium | |genus=Allium | ||
|species=Allium constrictum | |species=Allium constrictum | ||
Revision as of 20:50, 16 December 2019
Bulbs 1–5+, not clustered on stout, primary rhizome, ovoid, 1–1.5 × 0.8–1.4 cm; outer coats enclosing 1 or more bulbs, brownish, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white, cells obscure, quadrate. Leaves usually persistent, green at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, broadly channeled, falcate, 10–35 cm × 1–3(–5) mm, margins entire. Scape persistent, solitary, erect, solid, terete, enlarged apically but distinctly constricted just proximal to inflorescence, 15–20 cm × 1.5–4 mm. Umbel persistent, erect, compact, 15–30-flowered, hemispheric to globose, bulbils unknown; spathe bracts persistent, 3, 5–7-veined, ovate, ± equal, apex acute. Flowers ± stellate, 7–8 mm; tepals spreading, light pink to rose with prominent green or reddish midribs, narrowly lanceolate, ± equal, becoming papery in fruit, margins entire, apex acuminate; stamens exserted; anthers blue-gray; pollen light blue to gray; ovary crested; processes 6, 2 per lobe, low, rounded, margins entire; style exserted, linear; stigma capitate, unlobed; pedicel 10–20 mm. Seed coat shining; cells smooth. 2n = 14.
Phenology: Flowering May–Jul.
Habitat: Shallow, lithosolic soils, often dry and sandy
Elevation: 300–500 m
Discussion
Of conservation concern.
Allium constrictum is known only from Douglas, Grant, and Lincoln counties.
Selected References
None.