Difference between revisions of "Najas wrightiana"
Sitzungsber. Ges. Naturf., Freunde Berlin. 1868:17. 1868.
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|place=1868:17. 1868 | |place=1868:17. 1868 | ||
|year=1868 | |year=1868 | ||
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+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=W | ||
+ | |label=Weedy | ||
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+ | |code=I | ||
+ | |label=Introduced | ||
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|basionyms= | |basionyms= | ||
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|elevation=0–100 m | |elevation=0–100 m | ||
|distribution=Fla.;Mexico;Central America (Guatemala;Belize;Honduras);West Indies (Cuba). | |distribution=Fla.;Mexico;Central America (Guatemala;Belize;Honduras);West Indies (Cuba). | ||
+ | |introduced=true | ||
|tables= | |tables= | ||
|references={{Treatment/Reference | |references={{Treatment/Reference | ||
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name=Najas wrightiana | name=Najas wrightiana | ||
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|authority=A. Braun | |authority=A. Braun | ||
|rank=species | |rank=species | ||
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|publication title=Sitzungsber. Ges. Naturf., Freunde Berlin. | |publication title=Sitzungsber. Ges. Naturf., Freunde Berlin. | ||
|publication year=1868 | |publication year=1868 | ||
− | |special status= | + | |special status=Weedy;Introduced |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V22/V22_191.xml |
|genus=Najas | |genus=Najas | ||
|species=Najas wrightiana | |species=Najas wrightiana |
Latest revision as of 20:29, 5 November 2020
Stems profusely branched proximally to distally, 9–45 cm × 0.3–1 mm; internodes 0.3–5.2 cm, without prickes abaxially. Leaves ascending with age, 0.5–2.6 cm, stiff in age; sheath 0.7–2.8 mm wide, apex rounded; blade 0.2–1.3 mm wide, margins conspicuously serrulate, teeth 8–22 per side, apex acute, with 1 tooth, teeth multicellular; midvein without prickles abaxially. Flowers 1–2 per axil, staminate and pistillate on same plant. Staminate flowers in distal axils, 1.2–1.9 mm; involucral beaks 2-lobed, 0.3–0.5 mm; anther 4-loculed,1 mm. Pistillate flowers in proximal axils, 2 mm; styles to 0.7 mm; stigmas 4-lobed. Seeds not recurved, whitish, fusiform, 0.7–1.5 × 0.3–0.5 mm, apex with style situated at center; testa dull, 3 cell layers thick, pitted; aeroleareoles regularly arranged in 20 longitudinal rows, not ladderlike, 4–5-angled, longer than broad, end walls raised. Chromosome number unknown not available.
Phenology: Flowering late spring–fall.
Habitat: Slow moving streams and ponds
Elevation: 0–100 m
Distribution
Introduced; Fla., Mexico, Central America (Guatemala, Belize, Honduras), West Indies (Cuba).