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| Subularia aquatica var. americana (Mulligan & Calder) Boivin | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||
| Family: | Brassicaceae | ||
| Genus: | Subularia | ||
| Species Synonyms: | Subularia aquatica ssp. americana Mulligan & Calder | ||
| Common Names: | awlwort American awlwort American water awlwort |
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| DISTRIBUTION | |||
| Canada: | Yukon Territory - Mackenzie District (Northwest Territories) - southern Keewatin District (Nunavut) - Labrador, British Columbia - northern Saskatchewan - Ontario to Nova Scotia - Newfoundland | ||
| Saskatchewan: | northern Saskatchewan; Lake Athabasca - Cluff Lake - Wollaston Lake | ||
| Ecoregion: | Churchill River Upland, Athabasca Plain, Tazin Lake Upland, Selwyn Lake Upland | ||
| HABITAT | |||
| Saskatchewan: | shallow lake bottoms, submerged | ||
| Associated species: | Eleocharis acicularis, Lobelia dortmanna, Potamogeton gramineus, Ranunculus flammula var. filiformis | ||
| RARITY STATUS | |||
| Provincial
Status According to Harms (2003): |
Vulnerable |
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| Nature Conservancy Status: | G5T5 S2S3 |
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| Saskatchewan
Species at Risk Status: |
None |
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| COSEWIC Status: | None |
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| Subularia aquatica var. americana is vulnerable because it is rare or uncommon in the province. This species is likely commonly overlooked because of its size and resemblance to other aquatic plants, such as Isoetes. | |||
| SPECIES DESCRIPTION | |||
| Height: | 2 – 4 (-10) cm tall | ||
| Roots: | fibrous | ||
| Stems: | 1 – several, tufted, scapose, submersed | ||
| Leaves: | basal, 1.5 – 5 cm long, narrowly linear, subterete in cross-section, margin entire | ||
| Inflorescence: | raceme, 2 – 8 flowered; pedicels strongly ascending | ||
| Flowers: | calyx 4-merous; corolla 4-merous, white | ||
| Fruits: | silicle about 2.5 mm long, subglobose to obovate, only slightly compressed, not notched at summit, many-seeded; sepals may be persistent in fruit | ||
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