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| Elatine triandra Schkuhr | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||
| Family: | Elatinaceae | ||||||
| Genus: | Elatine | ||||||
| Species Synonyms: | Elatine triandra var. americana
(Pursh) Fassett Elatine triandra var. brachysperma (Gray) Fassett |
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| Common Names: | mud purslane longstem waterwort threestamen waterwort |
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| DISTRIBUTION | |||||||
| Canada: | southern Mackenzie District, southern British Columbia – Alberta – Saskatchewan – southern Ontario – Quebec – New Brunswick | ||||||
| Saskatchewan: | northwestern – southeastern Saskatchewan; Cluff Lake – Val Marie – Regina | ||||||
| Ecoregion: | Mixed Grassland, Moist Mixed Grassland, Mid-Boreal Upland, Athabasca Plain | ||||||
| HABITAT | |||||||
| Saskatchewan: | wet to drying mudflats, in slough bottoms and tilled field potholes | ||||||
| Associated Species: | Alisma plantago-aquatica, Eleocharis acicularis, Isoetes lacustris, Limosella aquatica, Lobelia kalmii, Ranunculus flammula var. filiformis | ||||||
| RARITY STATUS | |||||||
| Provincial
Status According to Harms (2003): |
Threatened |
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| Nature Conservancy Status: | G5 S2 |
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| Saskatchewan
Species at Risk Status: |
None |
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| COSEWIC Status: | None |
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| Elatine triandra is threatened in Saskatchewan because it rare or uncommon. It is usually locally numerous within limited areas. Possible threats have been identified for this species, including the drainage of potholes for agriculture and climate change. | |||||||
| SPECIES DESCRIPTION | |||||||
| Roots: | fibrous | ||||||
| Stems: | semi-annual, tufted or mat-forming, creeping, branches sometimes erect, to 10 cm tall, spreading to 20 cm wide, rooting at nodes, slender, rather succulent | ||||||
| Leaves: | opposite, 3 – 8 mm long, 1.5 – 3 mm wide, linear to obovate, apex truncate or emarginated, glabrous, punctuate above, papillate below, rather succulent | ||||||
| Inflorescence: | flowers solitary in leaf axils, sessile | ||||||
| Flowers: | minute, 1.5 – 2 mm wide, regular, perfect; sepals 3, petals 3, stamens 3, ovary superior | ||||||
| Fruits: | capsule ~ 3 mm wide, septicidal, globose; seeds many, areolate | ||||||
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