Difference between revisions of "Carex sect. Macrocephalae"
in H. G. A. Engler, Pflanzenr. 20[IV,38]: 186. 1909.
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|accepted_name=Carex sect. Macrocephalae | |accepted_name=Carex sect. Macrocephalae | ||
| − | |accepted_authority=Kükenthal | + | |accepted_authority=Kükenthal |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in H. G. A. Engler, Pflanzenr. | |title=in H. G. A. Engler, Pflanzenr. | ||
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name=Carex sect. Macrocephalae | name=Carex sect. Macrocephalae | ||
|author=Joy Mastrogiuseppe | |author=Joy Mastrogiuseppe | ||
| − | |authority=Kükenthal | + | |authority=Kükenthal |
|rank=section | |rank=section | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=1909 | |publication year=1909 | ||
|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_537.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Macrocephalae | |section=Carex sect. Macrocephalae | ||
Latest revision as of 20:41, 5 November 2020
Plants usually not cespitose, rhizomatous. Culms brown at base. Leaves: basal sheaths fibrous; sheath fronts membranous; blades V-shaped in cross section when young, widest leaves 4–8 mm wide, glabrous. Inflorescences paniculate, with 20+ spikes, ovoid or oblong capitate, occasionally with proximal 1–2 spikes separated, sessile; proximal bracts leaflike or threadlike, sheathless; spikes staminate, pistillate, or androgynous, sessile, without prophylls. Proximal pistillate scales with apex awned. Perigynia ascending or at length spreading, veined on both faces, short-stipitate, narrowly ovate, thickly plano-convex in cross section, base tapering or rounded, with spongy tissue, margins serrulate-winged, apex tapering to beak, glabrous; beak with abaxial suture, margins entire, apex bidentate. Stigmas 3. Achenes rounded-trigonous, smaller than bodies of perigynia; style deciduous.
Distribution
North America, e Asia.
Discussion
Species 2 (2 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Culms bluntly angled, smooth or, sometimes, weakly serrulate on 1 angle immediately proximal to inflorescences; proximal spikes appressed to ascending; proximal pistillate scales with awn to 6–12 mm; anthers 4–6.5 mm. | Carex kobomugi |
| 1 | Culms sharply angled, at least 1 angle serrulate immediately proximal to inflorescences; proximal spikes ascending-spreading to spreading; proximal pistillate scales with awn to 1.2–4 mm; anthers 2.5–5 mm. | Carex macrocephala |