Difference between revisions of "Rorippa amphibia"

(Linnaeus) Besser

Enum. Pl., 27. 1821.

WeedyIntroduced
Basionym: Sisymbrium amphibium Linnaeus Sp. Pl. 2: 657. 1753
Synonyms: Armoracia amphibia (Linnaeus) Petermann Brachiolobos amphibius (Linnaeus) Allioni Cochlearia amphibia (Linnaeus) Ledebour Myagrum amphibium (Linnaeus) Loiseleur Nasturtium amphibium (Linnaeus) W. T. Aiton Radicula amphibia (Linnaeus) Druce
Treatment appears in FNA Volume 7. Treatment on page 497. Mentioned on page 494, 495.
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|habitat=Lakeshores, marshes, ponds, streams
 
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|distribution=Que.;Maine;N.Y.;Europe;Asia.
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V7/V7_769.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_769.xml
 
|tribe=Brassicaceae tribe Cardamineae
 
|tribe=Brassicaceae tribe Cardamineae
 
|genus=Rorippa
 
|genus=Rorippa

Latest revision as of 22:36, 5 November 2020

Perennials; (submerged aquatic, rooting from proximal nodes, forming clumps); glabrous or pubescent proximally on young leaves. Stems prostrate basally (hollow), branched, (2–)4–12(–13) dm. Basal leaves not rosulate; blade margins pinnatifid. Cauline leaves (proximal) petiolate, (distal) sessile; blade pectinate or pinnatisect to pinnatifid (especially when submerged), oblanceolate to elliptic, 4–12 cm × 5–30 mm, base auriculate or not, margins entire or denticulate to serrate (emergent ones usually undivided, rarely lobed). Racemes considerably elongated. Fruiting pedicels horizontal to reflexed, straight or recurved, (5–)7–15(–18) mm. Flowers: sepals erect, oblong, 2.5–3.5 × 1–1.7 mm; petals yellow, obovate, (3.3–)3.8–5.5(–6.2) × 1.5–2.5 mm; median filaments 3–4 mm; anthers ovate, 0.7–1 mm. Fruits silicles, straight, ovoid-oblong, (2.5–)3–5.5(–7) × 1.7–2.7(–3) mm; valves glabrous; ovules 36–62 per ovary; style (0.5–)1–2.2(–2.5) mm. Seeds biseriate, reddish brown, ovoid, 0.7–1 mm (0.5–0.6 mm diam.), colliculate. 2n = 16, 32.


Phenology: Flowering Jun–Aug.
Habitat: Lakeshores, marshes, ponds, streams

Distribution

V7 769-distribution-map.gif

Introduced; Que., Maine, N.Y., Europe, Asia.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Rorippa amphibia"
Ihsan A. Al-Shehbaz +
(Linnaeus) Besser +
Sisymbrium amphibium +
Que. +, Maine +, N.Y. +, Europe +  and Asia. +
Lakeshores, marshes, ponds, streams +
Flowering Jun–Aug. +
Armoracia amphibia +, Brachiolobos amphibius +, Cochlearia amphibia +, Myagrum amphibium +, Nasturtium amphibium +  and Radicula amphibia +
Rorippa amphibia +
species +