Difference between revisions of "Elatine ambigua"
Bot. Misc. 2: 103, suppl. plate 5. 1830.
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|elevation=0–100 m. | |elevation=0–100 m. | ||
|distribution=Calif.;Conn.;Mass.;S.C.;Va.;s;se Asia;introduced also in Europe;s Pacific Islands;Australia. | |distribution=Calif.;Conn.;Mass.;S.C.;Va.;s;se Asia;introduced also in Europe;s Pacific Islands;Australia. | ||
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|discussion=<p><i>Elatine ambigua</i> is a popular aquarium plant usually misidentified as E. trianda. It is also a common weed in rice fields. This species probably was introduced to California, South Carolina, and Virginia through rice farming. Its introduction to Connecticut and Massachusetts probably was through aquarium disposal or fish stocking.</p> | |discussion=<p><i>Elatine ambigua</i> is a popular aquarium plant usually misidentified as E. trianda. It is also a common weed in rice fields. This species probably was introduced to California, South Carolina, and Virginia through rice farming. Its introduction to Connecticut and Massachusetts probably was through aquarium disposal or fish stocking.</p> | ||
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name=Elatine ambigua | name=Elatine ambigua | ||
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|authority=Wight | |authority=Wight | ||
|rank=species | |rank=species | ||
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|publication year=1830 | |publication year=1830 | ||
|special status=Weedy;Introduced | |special status=Weedy;Introduced | ||
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|genus=Elatine | |genus=Elatine | ||
|species=Elatine ambigua | |species=Elatine ambigua | ||
Latest revision as of 19:18, 5 November 2020
Herbs, submersed, 1.5–4(–8) cm. Stems prostrate or erect, branched. Leaves green; stipules lanceolate, 1 mm, margins dentate, apex acute; petiole 0.1–1 mm; blade lanceolate or oblong-elliptic, 2–6 × 0.5–1.5 mm, base cuneate, apex obtuse to acute. Pedicels 0.5–2.5 mm, recurved in fruit. Flowers: sepals 3, equal, oblong-ovate or broadly lanceolate, 0.5 × 0.3 mm; petals 0 or 3, reddish, long-elliptic or ovate, 1–1.5 × 0.5 mm; stamens 3; styles 3. Capsules oblong-ovoid, 3-locular, 1 mm diam. Seeds 10 per locule, narrowly oblong, straight or curved 15–30°, 0.3 × 0.1 mm; pits obscure, round, length 1–4 times width, in 6 rows, 19–25(–30) per row.
Phenology: Flowering late spring–summer.
Habitat: Pools, marshy places, rice fields.
Elevation: 0–100 m.
Distribution
Introduced; Calif., Conn., Mass., S.C., Va., s, se Asia, introduced also in Europe, s Pacific Islands, Australia.
Discussion
Elatine ambigua is a popular aquarium plant usually misidentified as E. trianda. It is also a common weed in rice fields. This species probably was introduced to California, South Carolina, and Virginia through rice farming. Its introduction to Connecticut and Massachusetts probably was through aquarium disposal or fish stocking.
Selected References
None.