Difference between revisions of "Cyperus melanostachyus"
in A. von Humboldt et al., Nov. Gen. Sp. 1(fol.): 167.
1(qto.): 207. 1816.
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GeoffLevin (talk | contribs) m (Changed "Ruiz and Pavon" to "Ruiz & Pavon" in discussion) |
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{{Treatment/ID | {{Treatment/ID | ||
| − | |accepted_name=Cyperus | + | |accepted_name=Cyperus melanostachyus |
| − | |accepted_authority= | + | |accepted_authority=Kunth |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| − | |title= | + | |title=in A. von Humboldt et al., Nov. Gen. Sp. |
| − | |place=1: | + | |place=1(fol.): 167 |
| − | |year= | + | }}, {{Treatment/Publication |
| + | |place=1(qto.): 207. 1816 | ||
| + | |year=1816 | ||
}} | }} | ||
|special_status={{Treatment/ID/Special_status | |special_status={{Treatment/ID/Special_status | ||
| Line 16: | Line 18: | ||
|authority=S. Watson | |authority=S. Watson | ||
|rank=variety | |rank=variety | ||
| − | |||
| − | |||
| − | |||
| − | |||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Cyperus niger var. castaneus | |name=Cyperus niger var. castaneus | ||
| Line 25: | Line 23: | ||
|rank=variety | |rank=variety | ||
}} | }} | ||
| − | |hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycreus;Cyperus | + | |hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycreus;Cyperus melanostachyus |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cyperus]]</div><div class="higher-taxon"><small>subgenus</small>[[Cyperus subg. Pycreus]]</div><div class="higher-taxon"><small>species</small>[[Cyperus | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cyperus]]</div><div class="higher-taxon"><small>subgenus</small>[[Cyperus subg. Pycreus]]</div><div class="higher-taxon"><small>species</small>[[Cyperus melanostachyus]]</div></div> |
|volume=Volume 23 | |volume=Volume 23 | ||
|mention_page=page 161 | |mention_page=page 161 | ||
| Line 39: | Line 37: | ||
|elevation=0–1200 m | |elevation=0–1200 m | ||
|distribution=Ariz.;Calif.;N.Mex.;Okla.;Tex.;Mexico;Central America;South America. | |distribution=Ariz.;Calif.;N.Mex.;Okla.;Tex.;Mexico;Central America;South America. | ||
| − | |discussion=<p>Six varieties (<i> | + | |discussion=<p>Six varieties (var. <i>niger</i>, var. <i>castaneus</i>, var.<i> robustus</i>, var. <i>lorentizianus</i>, var. <i>intricatoramosus</i>, and var. <i>pseudoelegantulus</i>) were recognized by G. Kükenthal (1935–1936) under the illegitimate name <i>Cyperus niger</i> Ruiz & Pavon (1798), not Salisbury (1796). Based on field observations and measurements of hundreds of collections from Mexico, where the species is most plentiful, it does not seem possible to recognize any of the infraspecific taxa (G. C. Tucker 1983, 1994; G. C. Tucker and R. McVaugh 1993).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
| Line 47: | Line 45: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
| − | name=Cyperus | + | name=Cyperus melanostachyus |
| − | |authority= | + | |authority=Kunth |
|rank=species | |rank=species | ||
|parent rank=subgenus | |parent rank=subgenus | ||
| − | |synonyms=Cyperus diandrus var. castaneus | + | |synonyms=Cyperus diandrus var. castaneus;Cyperus niger var. castaneus |
|basionyms= | |basionyms= | ||
|family=Cyperaceae | |family=Cyperaceae | ||
| Line 59: | Line 57: | ||
|distribution=Ariz.;Calif.;N.Mex.;Okla.;Tex.;Mexico;Central America;South America. | |distribution=Ariz.;Calif.;N.Mex.;Okla.;Tex.;Mexico;Central America;South America. | ||
|reference=None | |reference=None | ||
| − | |publication title= | + | |publication title=in A. von Humboldt et al., Nov. Gen. Sp. |
| − | |publication year= | + | |publication year=1816 |
|special status=Illustrated | |special status=Illustrated | ||
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_254.xml | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_254.xml | ||
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Pycreus | |subgenus=Cyperus subg. Pycreus | ||
| − | |species=Cyperus | + | |species=Cyperus melanostachyus |
}}<!-- | }}<!-- | ||
-->[[Category:Treatment]][[Category:Cyperus subg. Pycreus]] | -->[[Category:Treatment]][[Category:Cyperus subg. Pycreus]] | ||
Latest revision as of 15:32, 15 November 2022
Herbs, perennial, rhizomatous. Culms solitary or close together, trigonous, 5–40(–95) cm, glabrous. Leaves (2–)3–7, broadly V-shaped, 3–20(–30) cm × 1.5–3 mm. Inflorescences: spikes loosely to densely ovoid to hemispheric, 7–16 mm diam.; rachis 1–2 mm, or absent; rays 1–2, 3–45 mm; if rays absent, inflorescence sessile, dense, 6–20 mm diam; bracts 2–3, horizontal to reflexed downward, broadly V-shaped, 1–15 cm × 1–3 mm. Spikelets (3–)5–25(–60), linear to oblong-linear, (3–)5–9 × 1.8–2.3 mm; floral scales 4–18, closely imbricate, chestnut brown, black, or brown, medially green or greenish brown, laterally ribless, medially 2(–3)-ribbed, distinctly 2-keeled basally, ovate to orbiculate, 1.5–2.1 × 1.4–2.2 mm, apex obtuse. Flowers: stamens 2; anthers 0.6–0.8 mm, connectives not prolonged; styles 0.4–0.6 mm; stigmas 0.7–2.1 mm. Achenes brown, ellipsoid, 1.2–1.4 × 0.6–0.8 mm, network of ridges forming isodiametric or square cells, slightly stipitate, apex apiculate, surfaces minutely punctate.
Phenology: Fruiting summer.
Habitat: Swamps, ditches, wet pastures, seeps in montane forests
Elevation: 0–1200 m
Distribution
Ariz., Calif., N.Mex., Okla., Tex., Mexico, Central America, South America.
Discussion
Six varieties (var. niger, var. castaneus, var. robustus, var. lorentizianus, var. intricatoramosus, and var. pseudoelegantulus) were recognized by G. Kükenthal (1935–1936) under the illegitimate name Cyperus niger Ruiz & Pavon (1798), not Salisbury (1796). Based on field observations and measurements of hundreds of collections from Mexico, where the species is most plentiful, it does not seem possible to recognize any of the infraspecific taxa (G. C. Tucker 1983, 1994; G. C. Tucker and R. McVaugh 1993).
Selected References
None.