View source for Ludwigia linearis

{{Treatment/ID
|accepted_name=Ludwigia linearis
|accepted_authority=Walter
|publications={{Treatment/Publication
|title=Fl. Carol.,
|place=89. 1788
|year=1788
}}
|common_names=Narrowleaf primrose-willow
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Isnardia linearis
|authority=(Walter) de Candolle
|rank=species
}} {{Treatment/ID/Synonym
|name=Ludwigia angustifolia
|authority=Michaux
|rank=species
}} {{Treatment/ID/Synonym
|name=L. linearis var. puberula
|authority=Engelmann & A. Gray
|rank=variety
}}
|hierarchy=Onagraceae;Onagraceae subfam. Ludwigioideae;Ludwigia;Ludwigia sect. Isnardia;Ludwigia linearis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Onagraceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Onagraceae subfam. Ludwigioideae]]</div><div class="higher-taxon"><small>genus</small>[[Ludwigia]]</div><div class="higher-taxon"><small>section</small>[[Ludwigia sect. Isnardia]]</div><div class="higher-taxon"><small>species</small>[[Ludwigia linearis]]</div></div>
|volume=Volume 10
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs </b>slender, usually with aerenchyma near base, forming stolons 10–30 cm, 0.8–2.5 mm thick. <b>Stems</b> erect, slightly ridged, often well branched, (22–)50–100(–145) cm, glabrous or sparsely to densely, minutely strigillose. <b>Leaves</b> alternate; stipules narrowly ovate or lanceolate, 0.15–0.3 × 0.05–0.15 mm; stolons: petiole attenuate, 0.2–0.5 cm, blade narrowly to very narrowly elliptic, 1–2.5 × 0.3–0.9 cm, surfaces glabrous or minutely strigillose; stems: subsessile, blade linear to elliptic-linear, 1.6–6(–8.5) × 0.1–0.4(–0.6) cm, base very narrowly cuneate, margins entire with obscure hydathodal glands, apex very narrowly acute, surfaces glabrous or sparsely to densely, minutely strigillose or puberulent; bracts not much reduced. <b>Inflorescences</b> leafy racemes or spikes, flowers solitary in leaf axils; bracteoles deciduous, attached on pedicel near ovary base or to 4.5 mm distal to base, linear, 0.4–4(–7.5) × 0.1–0.3 mm. <b>Flowers</b>: sepals ascending, green, lanceolate-deltate to narrowly so, 2.5–5(–5.5) × 1–3(–3.5) mm, margins entire, apex acuminate or elongate-acuminate to cuspidate, surfaces sparsely to densely strigillose; petals obovate to suborbiculate, 3–6 × (2–)2.5–5 mm, base attenuate, margins entire, apex obtuse; filaments white or cream, 1.1–2.2 mm, anthers lanceolate-oblong, 1–2 × 0.6–1 mm; pollen shed in tetrads; ovary cylindric (wider at apex), 2.5–4.5 ×1–2.5 mm, strigillose; nectary disc elevated (0.2–)0.3–0.6 mm on ovary apex, yellow, 1.3–2.5 mm diam., 4-lobed, margins glabrous or minutely strigillose; style yellowish green, (0.4–)0.7–1.5 mm, glabrous or densely strigillose on proximal part, stigma clavate to subcapitate, (0.6–)1–1.9 × 0.6–0.9 mm, shallowly 4-lobed, not exserted beyond anthers. <b>Capsules</b> elongate-obpyramidal, obscurely 4-angled, often with central, longitudinal groove on each side, 5–10(–12) × 2–5.5 mm, hard-walled, dehiscent by apical ring, pedicel 0–3.5(–5) mm. <b>Seeds</b> light brown, oblong-elliptic,0.5–0.7 × 0.2–0.3 mm, surface cells oblong, elongate either parallel or transversely to seed length. <b>2n</b> = 16.</span><!--

-->{{Treatment/Body
|phenology=Flowering late Jun–Sep.
|habitat=Drainage ditches, along river or stream banks, swales, edges of pocosins, sandy soil in wet meadows, brackish marshes, disturbed ground.
|elevation=0–300 m.
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;La.;Md.;Miss.;Mo.;N.J.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va.
|discussion=<p>Ludwigia linearis is widespread in the southeastern United States, with a complex pattern of morphological variation, especially in stem pubescence, ranging from glabrous to densely strigillose, but without strong geographical separation (C. I. Peng 1989).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Ludwigia linearis
|authority=Walter
|rank=species
|parent rank=section
|synonyms=Isnardia linearis;Ludwigia angustifolia;L. linearis var. puberula
|basionyms=
|family=Onagraceae
|phenology=Flowering late Jun–Sep.
|habitat=Drainage ditches, along river or stream banks, swales, edges of pocosins, sandy soil in wet meadows, brackish marshes, disturbed ground.
|elevation=0–300 m.
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;La.;Md.;Miss.;Mo.;N.J.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va.
|reference=None
|publication title=Fl. Carol.,
|publication year=1788
|special status=
|source xml=https://xjsachs2@bitbucket.org/aafc-mbb/fna-data-curation.git/src/e39f0e846f172941159b2045254d62d10d9823f6/coarse_grained_fna_xml/V10/V10_243.xml
|subfamily=Onagraceae subfam. Ludwigioideae
|genus=Ludwigia
|section=Ludwigia sect. Isnardia
|species=Ludwigia linearis
}}<!--

-->[[Category:Treatment]][[Category:Ludwigia sect. Isnardia]]