Difference between revisions of "Schoenoplectus saximontanus"
Adansonia, n. s. 16: 141. 1976.
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|name=Scirpus saximontanus | |name=Scirpus saximontanus | ||
|authority=Fernald | |authority=Fernald | ||
+ | |rank=species | ||
|publication_title=Rhodora | |publication_title=Rhodora | ||
|publication_place=3: 251. 1901 | |publication_place=3: 251. 1901 | ||
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|name=Scirpus bergsonii | |name=Scirpus bergsonii | ||
|authority=Schuyler | |authority=Schuyler | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Scirpus supinus var. saximontanus | |name=Scirpus supinus var. saximontanus | ||
|authority=(Fernald) T. Koyama | |authority=(Fernald) T. Koyama | ||
+ | |rank=variety | ||
}} | }} | ||
|hierarchy=Cyperaceae;Schoenoplectus;Schoenoplectus sect. Supini;Schoenoplectus saximontanus | |hierarchy=Cyperaceae;Schoenoplectus;Schoenoplectus sect. Supini;Schoenoplectus saximontanus | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Schoenoplectus saximontanus | name=Schoenoplectus saximontanus | ||
− | |||
|authority=(Fernald) J. Raynal | |authority=(Fernald) J. Raynal | ||
|rank=species | |rank=species | ||
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|publication year=1976 | |publication year=1976 | ||
|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/V23/V23_88.xml |
|genus=Schoenoplectus | |genus=Schoenoplectus | ||
|section=Schoenoplectus sect. Supini | |section=Schoenoplectus sect. Supini |
Revision as of 21:12, 16 December 2019
Plants annual or perennial; rhizomes 1 mm diam. Culms often arching to decumbent, cylindric, ridged when dry, 0.09–0.65 m × 0.5–1.5 mm. Leaves 3–4, 1(–2) cauline; sheath fronts not pinnate-fibrillose; blades 1–2, proximally thickly C-shaped in cross section, distally flat, rudimentary to longer than sheath, 1–200 × 0.2–1 mm, smooth or margins distally spinulose. Inflorescences capitate or of 1 spikelet or with 1 or 2 branches to 15 mm; proximal bract erect, like leaf blades, 5–15 cm. Spikelets 1–20; 6–20 × 3 mm; scales pale orange-brown to colorless, midrib region sometimes greenish, ovate, 2.2–3(–3.5) × 1.5 mm, awn sparsely spinulose, margins ciliolate, midrib keeled distally, apex entire, rounded, awn 0.2–0.5 mm or to 1 mm on proximal scale. Flowers: perianth absent; anthers 0.3–0.5 mm; styles 3-fid. Spikelet achenes blackish brown, nearly equilaterally sharply trigonous, ovoid to obovoid, 1.3–1.8 × 1–1.4 mm, with 10–20 mostly sharp ridges; beak 0.1 mm. Amphicarpic achenes trigonous, 2.2–3 mm including stout, tapered beak 0.3 mm, with many obscure to evident horizontal ridges. 2n = 50.
Phenology: Fruiting late summer–fall, spring–fall (California, Texas).
Habitat: Damp soils to emergent, freshwater ponds, ditches, often drying, disturbed, and sandy areas
Elevation: 0–2200 m
Distribution
![V23 88-distribution-map.jpg](/w/images/0/02/V23_88-distribution-map.jpg)
B.C., Calif., Colo., Ill., Kans., Mo., Nebr., Ohio, Okla., S.Dak., Tex., Utah, Wyo., Mexico (San Luis Potosí, Tamaulipas).
Discussion
The distribution of Schoenoplectus saximontanus is very scattered (local).
Selected References
None.