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| Scirpus pallidus (Britt.) Fern. | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||||||||||||||||
| Family: | Cyperaceae | ||||||||||||||||||||
| Genus: | Scirpus | ||||||||||||||||||||
| Species Synonyms: | Scirpus atrovirens var. pallidus Britt. | ||||||||||||||||||||
| Common Names: | pale bulrush cloaked bulrush pale-green bulrush |
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| DISTRIBUTION | |||||||||||||||||||||
| Canada: | southeastern British Columbia – central and southeastern Alberta, southeastern Saskatchewan – southern Manitoba – northern Ontario | ||||||||||||||||||||
| Saskatchewan: | southeastern Saskatchewan; Souris River Valley – Antler River Valley | ||||||||||||||||||||
| Ecoregion: | Moist Mixed Grassland, Aspen Parkland | ||||||||||||||||||||
| HABITAT | |||||||||||||||||||||
| Saskatchewan: | marshy shores, moist ravine bottoms, low meadows, streamsides, and ditches | ||||||||||||||||||||
| Associated Species: | Carex bebbii, Carex gravida, Elymus virginicus, Glyceria striata, Muhlenbergia racemosa, Schoenoplectus tabernaemontani, Scirpus microcarpus, Solidago gigantea | ||||||||||||||||||||
| 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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| Scirpus pallidus is threatened because it is rare or uncommon in Saskatchewan and is restricted to the southeastern part of the province. This species is usually locally numerous within limited areas. | |||||||||||||||||||||
| SPECIES DESCRIPTION | |||||||||||||||||||||
| Height: | to 1.5 m | ||||||||||||||||||||
| Roots: | rhizomes short, tough | ||||||||||||||||||||
| Culms: | solitary to few, erect or nearly so, trigonous, leafy on lower half, pale green | ||||||||||||||||||||
| Leaves: | 5 – 10 per culm; sheaths greenish or whitish; blades 20 – 55 cm long, 0.8 – 2 cm wide | ||||||||||||||||||||
| Inflorescence: | umbel terminal; involucral bracts 3 – 4, foliaceous, short, green; rays 4 – 8, ascending or divergent, lacking axillary bulblets; glomerules terminating rays dense, spikelets 12 – 130 | ||||||||||||||||||||
| Spikelets: | sessile, 4 – 5 mm long, < 2.5 mm wide, narrowly ovoid; scales 1.8 – 2.8 mm long, elliptic to ovate, black or brownish, midrib pale, awn 0.4 – 0.6 mm long | ||||||||||||||||||||
| Flowers: | perianth bristles 6, stout, straight or curved, may be tangled and appearing woolly in fruit, longest bristles equalling achene, retrorsely barbellate, enclosed within scales; styles 3-cleft | ||||||||||||||||||||
| Achenes: | elliptic to obovate, trigonous or planoconvex, pale brown or whitish | ||||||||||||||||||||
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