Difference between revisions of "Cyperus tetragonus"
Sketch Bot. S. Carolina 1: 71. 1821.
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|place=1: 71. 1821 | |place=1: 71. 1821 | ||
|year=1821 | |year=1821 | ||
| + | }} | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
}} | }} | ||
|basionyms= | |basionyms= | ||
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|name=Cyperus pringlei | |name=Cyperus pringlei | ||
|authority=Britton | |authority=Britton | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Cyperus tetragonus var. pringlei | |name=Cyperus tetragonus var. pringlei | ||
|authority=(Britton) Kükenthal | |authority=(Britton) Kükenthal | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Mariscus tetragonus | |name=Mariscus tetragonus | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus tetragonus | |hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus tetragonus | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Cyperus tetragonus | name=Cyperus tetragonus | ||
| − | |||
|authority=Elliott | |authority=Elliott | ||
|rank=species | |rank=species | ||
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|publication title=Sketch Bot. S. Carolina | |publication title=Sketch Bot. S. Carolina | ||
|publication year=1821 | |publication year=1821 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_328.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Cyperus | |subgenus=Cyperus subg. Cyperus | ||
Latest revision as of 20:39, 5 November 2020
Herbs, perennial, cespitose, rhizomatous. Culms trigonous, (20–) 30–80 cm × 1–2.5 mm, glabrous or occasionally with scattered prickles on distal angles. Leaves 9–11, flat to slightly V-shaped, 25–80 cm × 3.5–10 mm. Inflorescences: spikes (1–)3–6, loosely cylindric or oblong with parallel sides, 1.5–4 cm × 10–17 mm; rays 6–12, 2–25 cm, glabrous or rarely scabridulous proximal to spikes; bracts 6–11, ascending at 45°, flat, (1–)10–20(–26) cm × 1–10 mm; rachilla deciduous, wings persistent, 0.4–0.5 mm wide. Spikelets 10–60, narrowly ellipsoid, quadrangular, 5–8 × 1.5–2 mm; floral scales persistent, (2–)3–7, appressed, clear at maturity, laterally reddish to purplish brown, medially greenish, often erose at maturity, laterally 3–5-ribbed, medially 3-ribbed, ovate-elliptic, 2.5–3.2 × 1.8–2.1 mm, apex obtuse. Flowers: anthers 0.8–1 mm; styles 0.3–0.5 mm; stigmas 2–2.5 mm. Achenes brown to reddish brown, sessile, oblong-ovoid to broadly ellipsoid, slightly dorsiventrally flattened, 1.8–2 × 0.7–0.8 mm, apex obtuse, apiculate, surfaces papillose to puncticulate.
Phenology: Fruiting summer–fall (Jun–Nov).
Habitat: Open woods, thickets, barrier islands
Elevation: 0–1000 m
Distribution
Ala., Ariz., Fla., Ga., Miss., N.Mex., N.C.
Discussion
The status of Cyperus pringlei from the southwestern United States requires further study.
Selected References
None.