Difference between revisions of "Carex tetrastachya"
Linnaea 22: 347. 1849.
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|name=Carex wrightii | |name=Carex wrightii | ||
|authority=Olney | |authority=Olney | ||
+ | |rank=species | ||
|publication_title= | |publication_title= | ||
|publication_place=1871 | |publication_place=1871 | ||
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|name=Carex brittoniana | |name=Carex brittoniana | ||
|authority=L. H. Bailey | |authority=L. H. Bailey | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Carex straminea var. maxima | |name=Carex straminea var. maxima | ||
|authority=L. H. Bailey | |authority=L. H. Bailey | ||
+ | |rank=variety | ||
}} | }} | ||
|hierarchy=Cyperaceae;Carex;Carex sect. Ovales;Carex tetrastachya | |hierarchy=Cyperaceae;Carex;Carex sect. Ovales;Carex tetrastachya | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Carex tetrastachya | name=Carex tetrastachya | ||
− | |||
|authority=Scheele | |authority=Scheele | ||
|rank=species | |rank=species | ||
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|publication year=1849 | |publication year=1849 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_668.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Ovales | |section=Carex sect. Ovales |
Revision as of 21:10, 16 December 2019
Plants densely to loosely cespitose; rhizomes black, short to ± elongate in old clumps. Culms 30–100 cm; vegetative culms few, inconspicuous, usually fewer than 12 leaves, not strikingly 3-ranked. Leaves: sheath summits with adaxial hyaline band, truncate to rounded, sometimes prolonged beyond collar; distal ligules to 5 mm; blades 3–5 per fertile culm, 13–40 cm × 2.5–5 mm. Inflorescences densely to usually open, at least proximally, silvery white, 2.5–6 cm × 10–25 mm; proximal internode (4–)8–11 mm; 2d internode 4–8 mm; proximal bracts bristlelike to 5 cm. Spikes 2–4(–5), distant, distinct, ovoid to globose-ovoid, 11–18 × 8–13 mm, base attenuate on terminal spike, rounded on lateral spikes, apex rounded. Pistillate scales white-hyaline with light brown 1–3-veined midstripe, lanceolate to ovate, 4–6 mm, as long as and narrower than perignyia. apex acuminate with subulate tip or awnlike, awn of at least proximate staminate scales and sometimes proximal pistillate scales 0.1–0.9(–2.4) mm, scabrous. Perigynia 15–80 in larger spikes, ascending, white with light green margins, veinless over achene on each face, orbiculate or little wider than long, flat, 5.5–8(–8.7) × 3.5–6.3 mm, 0.4–0.5 mm thick, margin flat, including wing 1–2 mm wide, smooth; beak pale brown to reddish at tip, flat, (1.4–)1.6–2.5(–3.4) mm, ciliate-serrulate, abaxial suture inconspicuous or brown, distance from beak tip to achene 2.5–4 mm. Achenes oblong-elliptic, 2.5–3 × 1.5–2 mm, 0.4–0.5 mm thick. n = 30+III. 2n = 64, 66.
Phenology: Fruiting spring.
Habitat: Mesic to moist prairies, roadside ditches, shores
Elevation: 0–300 m
Distribution
La., Okla., Tex.
Discussion
Selected References
None.