Difference between revisions of "Cyperus elegans"
Sp. Pl. 1: 45. 1753.
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|place=1: 45. 1753 | |place=1: 45. 1753 | ||
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+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=F | ||
+ | |label=Illustrated | ||
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|basionyms= | |basionyms= | ||
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|name=Cyperus trachynotus | |name=Cyperus trachynotus | ||
|authority=Torrey | |authority=Torrey | ||
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus elegans | |hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus elegans | ||
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name=Cyperus elegans | name=Cyperus elegans | ||
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|authority=Linnaeus | |authority=Linnaeus | ||
|rank=species | |rank=species | ||
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|publication title=Sp. Pl. | |publication title=Sp. Pl. | ||
|publication year=1753 | |publication year=1753 | ||
− | |special status= | + | |special status=Illustrated |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_283.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, shortly rhizomatous, coarse, viscous. Culms round to roundly trigonous, 15–80 cm × 2–4 mm, glabrous. Leaves: adaxial face concave, becoming trigonous apically, 15–75 cm × 1–4 mm, margins involute. Inflorescences: spikes ovoid, 10–20 mm wide; rays 3–8(–10), 0.5–12 cm; 2d order rays 0–3, 1–3 cm; bracts 3–7, horizontal to vertical, 2.5–5.5 cm × 1–4 mm, margins involute; 2d order bracts 0–3, 1–3 cm; rachilla persistent, wingless. Spikelets 3–20(–30), beige to greenish or reddish brown, strongly compressed, oblong-ellipsoid to oblong-lanceoloid, 3–15 × 2.5–3.5 mm; floral scales deciduous, 6–22, laterally pale greenish white to stramineous or reddish brown, medially pale green to yellowish green, laterally 2-ribbed, medially 3–5-ribbed, broadly ovate, (2–)2.8–3.6 × 2.4–2.6 mm, apex with slightly excurved mucro 0.2–0.3 mm, apically scabrid. Flowers: anthers 0.6–1.4 mm; styles 1.2–1.5 mm; stigmas 1–1.5(–3) mm. Achenes dark reddish brown to black, stipitate, obovoid, faces concave, flat or subtly convex, (1.4–)1.8–2 × 0.9–1 mm, base cuneate, stipe (sometimes absent) spongy, 0.1–0.2 × 0.2–0.4 mm, apex truncate, apiculate, surfaces coarsely papillose.
Phenology: Fruiting summer.
Habitat: Ditches, damp pastures, pond shores, riverbanks
Elevation: 0–500 m
Distribution
Fla., La., N.Mex., Tex., Mexico, Central America, South America.
Discussion
Selected References
None.