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| Schoenoplectus subterminalis (Torr.) Sojak | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||||||||||||||||
| Family: | Cyperaceae | ||||||||||||||||||||
| Genus: | Schoenoplectus | ||||||||||||||||||||
| Species Synonyms: | Scirpus subterminalis Torr. | ||||||||||||||||||||
| Common Names: | subterminal bulrush swaying bulrush |
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| DISTRIBUTION | |||||||||||||||||||||
| Canada: | British Columbia, northwestern Saskatchewan, Ontario – Quebec – Newfoundland – Nova Scotia | ||||||||||||||||||||
| Saskatchewan: | northwestern Saskatchewan; Lake Athabasca | ||||||||||||||||||||
| Ecoregion: | Athabasca Plain | ||||||||||||||||||||
| HABITAT | |||||||||||||||||||||
| Saskatchewan: | submerged to emergent aquatic, occasionally terrestrial; lakes streams, and bogs | ||||||||||||||||||||
| RARITY STATUS | |||||||||||||||||||||
| Provincial
Status According to Harms (2003): |
Endangered |
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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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| Schoenoplectus subterminalis is endangered because it is extremely rare and is only found in one small region of the province. In addition, most local populations are small and some may be threatened by planned developments. | |||||||||||||||||||||
| SPECIES DESCRIPTION | |||||||||||||||||||||
| Height: | to 1.5 m | ||||||||||||||||||||
| Roots: | rhizomes soft, weak, occasionally with terminal tubers to 3 mm thick | ||||||||||||||||||||
| Culms: | cylindrical to obscurely trigonous, < 1 mm wide | ||||||||||||||||||||
| Leaves: | 2 – 20 or more, erect leaves usually C-shaped in cross section, capillary; submerged leaves basal, < 1 mm wide, filiform, flaccid | ||||||||||||||||||||
| Inflorescence: | spikelet terminal but appearing lateral, solitary, erect; bract 7 – 60 mm long, stiff, foliaceous | ||||||||||||||||||||
| Spikelets: | 5 – 15 mm long; scales 4 – 6 mm long, ovate, smooth, pale brown, margins sometimes ciliolate | ||||||||||||||||||||
| Flowers: | perianth bristles 6, shorter than or equal to achene beak, brown, spinulose; styled 3-cleft | ||||||||||||||||||||
| Achenes: | obovoid, trigonous, brown, beak 0.3 – 0.8 mm | ||||||||||||||||||||
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