Luzula acuminata
 
Hairy Wood-Rush

Lower Cauline Leaf Top

Fir River Shelter on Fir River Road, West of Hudson Bay
18-June-2015

Note the pubescence, characteristic of Luzula species.

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Acuminata: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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inflorescence umbellate; NOT [inflorescence cymose (usually much branched)]

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flowers solitary (or 2-3 together) at the ends of branches; NOT [flowers crowded in dense clusters]

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flowers 2.5-4.5 mm long; NOT [flowers 2-3.0 mm long]

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seeds about 2.5 mm long; NOT [seeds smaller]

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seeds with a tail-like appendage about as long as the body; NOT [seeds without a tail-like appendage]

 

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Luzula: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus. 
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leaves flat or channelled and grass-like; NOT [leaves often terete, seldom flat and grass-like]

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leaves more or less hairy, at least when young; NOT [leaves glabrous]

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capsule containing 3 large seeds; NOT [capsule containing many small seeds]

 

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Juncaceae: Answers to key questions in Budd's Flora leading to this family. 
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plants not aquatic, or if growing in water, most of the plant emersed; NOT [plants aquatic, floating or submerged, with floating leaves or emersed inflorescence]

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flowers not in globular heads; NOT [flowers in globular heads, the upper ones staminate, the lower ones pistillate]

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flowers in branched inflorescences; NOT [inflorescence a dense, single, cylindrical spike 8-15 cm long, 1-2.5 cm thick], NOT [flowers in spike-like racemes]

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perianth in two whorls, each of three segments

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perianth segments inconspicuous and scale-like; NOT [perianth segments conspicuous and often brightly colored], NOT [perianth of greenish sepals and petals]