Blysmus rufus (Huds.) Link
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TAXONOMY
 
Family: Cyperaceae
Genus: Blysmus
 
Species Synonyms: Scirpus rufus (Huds.) Schrad.
Scirpus rufus var. neogaeus Fern.
Common Names: red bulrush
red club-rush
 
DISTRIBUTION
 
Canada: Mackenzie District, northeastern Alberta – central Saskatchewan – Manitoba, James Bay, eastern Quebec – Newfoundland – Nova Scotia
Saskatchewan: central Saskatchewan; Saskatoon – Nitenai River Salt Marsh
Ecoregion: Moist Mixed Grassland, Mid-Boreal Lowland
 
HABITAT
 
Saskatchewan: saline marshes and bogs
Associated Species: Carex aquatilis, Carex aurea, Carex mackenziei, Carex parryana, Carex viridula ssp. viridula, Eleocharis quinqueflora, Muhlenbergia glomerata, Parnassia palustris, Triglochin maritima, Triglochin palustris
 
RARITY STATUS
 
Provincial Status According
to Harms (2003):
Threatened
Nature Conservancy Status:
G5 S2
Saskatchewan Species at
Risk Status:
None
COSEWIC Status:
None
 
Blysmus rufus is threatened because it is rare or uncommon in Saskatchewan. This species occurs in a relatively wide range in central Saskatchewan, but population sizes are variable. No immediate threats to this species are known at the present time.
 
SPECIES DESCRIPTION
 
Height: 10 – 40 cm
Roots: rhizome creeping, freely branched, scales reddish-brown; roots fibrous
Stems: perennial, caespitose, commonly growing in a straight row, terete, 1 – 2 mm wide, leafy belo
Leaves: basal, 15 – 40 cm, almost as tall as stem, 1 – 2 mm wide, flat; stiff, ligules present
Inflorescence: spike solitary, 1 – 2 cm long, distichous
Bracts: 1 – several, small, inconspicuous to overtopping spike, foliaceous
Spikelets: scales 2 – 5, each subtending flower, dark brown
Flowers: bisexual; perianth bristles 0 or 3 – 5, very short, barbed, deciduous; stamens 3; stigma bifid
Fruits: drupe, 3.5-4.5 mm long, red, viscid-pubescent; seed 3-3.5 mm long, yellowish, smooth
 
BLYSMUS VS. SCIRPUS, ELEOCHARIS, AND RHYNCHOSPORA IN SASKATCHEWAN
 
1 Style base enlarged, persistent as tubercle on achene
2
1 Style base not enlarged, style generally deciduous
3
   
2 Culms unbranched; spikes 1, many-flowered
Eleocharis
2 Culms branched; spikes 2 or more, one fertile flower per spikelet
Rhynchospora
   
3 Spikes solitary, distichous
Blysmus
3 Spikes many, arranged in panicle or head
Scirpus