Difference between revisions of "Carex sect. Triquetrae"
in N. L. Britton et al., N. Amer. Fl. 18: 215. 1935.
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|accepted_name=Carex sect. Triquetrae | |accepted_name=Carex sect. Triquetrae | ||
| − | |accepted_authority=(L. H. Bailey) Mackenzie | + | |accepted_authority=(L. H. Bailey) Mackenzie |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in N. L. Britton et al., N. Amer. Fl. | |title=in N. L. Britton et al., N. Amer. Fl. | ||
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name=Carex sect. Triquetrae | name=Carex sect. Triquetrae | ||
|author=Peter W. Ball | |author=Peter W. Ball | ||
| − | |authority=(L. H. Bailey) Mackenzie | + | |authority=(L. H. Bailey) Mackenzie |
|rank=section | |rank=section | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=1935 | |publication year=1935 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_908.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Triquetrae | |section=Carex sect. Triquetrae | ||
Latest revision as of 21:43, 5 November 2020
Plants densely cespitose, short-rhizomatous. Culms brown at base. Leaves: basal sheaths not or slightly fibrous; sheath fronts dotted purple, membranous; blades M-shaped in cross section when young, adaxial surface with 2 lateral veins more prominent th an midvein, papillose, glabrous. Inflorescences racemose, with 3–4 spikes; proximal bracts leaflike, sheath to 3.5 cm; lateral spikes pistillate or, sometimes, androgynous with few staminate flowers, pedunculate, prophyllate; terminal spikes staminate. Proximal pistillate scales hyaline, green, or brown, apex acute to cuspidate. Perigynia ascending, obscurely veined or distinctly 6-veined, with 2 strong marginal veins, subsessile to sessile, ovate or obovate, trigonous in cross section, base rounded-tapering, apex abruptly contracted to beak, pilose; beak 0.2–0.4 mm, orifice emarginate. Stigmas 3. Achenes trigonous, almost as large as bodies of perigynia; styles deciduous.
Distribution
sw United States, nw Mexico.
Discussion
Species 1.
Selected References
None.