Juncus torreyi
 
Torrey's Rush

Distal Portion of Highest Leaf, Abaxial Side

One Mile West of Melita
24-July-2015

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Torreyi: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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lowland species; NOT [montane to alpine species]

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perennial; NOT [annual]

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flowering stems mostly more than 15 cm tall; NOT [flowering stems 3-15 cm tall]

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leaves basal and cauline; NOT [leaves all basal], NOT [leaves reduced to sheaths]

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leaves terete; NOT [leaves dorsiventrally flattened], NOT [leaves laterally flattened with the edge toward the stem], NOT [leaves channelled]

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leaves septate with the septa complete

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leaf blades mostly less than 3 mm wide; NOT [leaf blades 3-6 mm wide]

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inflorescence appearing terminal or lateral; NOT [bract of inflorescence appearing as a cylindrical continuation of the stem, inflorescence appearing lateral]

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NOT [inflorescence diffuse, generally more than two-thirds the height of the plant]

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inflorescence with short branches; NOT [inflorescence with elongate branches]

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bract of the inflorescence flat or channeled on the upper side; NOT [bract of the inflorescence terete]

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NOT [heads solitary (very rarely 2), blackish brown]

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heads more than one; NOT [heads solitary (rarely 2)]

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heads short-peduncled; NOT [heads long-peduncled]

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heads 10-15 mm wide; NOT [heads less than 10 mm wide]

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heads spherical; NOT [heads at most hemispherical]

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heads appearing prickly

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heads with 25-80 flowers; NOT [heads with 10-20 flowers], NOT [heads with 1-3 (5) flowers]

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heads with spreading, often reflexed flowers; NOT [flowers erect or ascending]

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flowers 4-5 mm long; NOT [flowers 3-4 mm long]

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sepals longer than the petals; NOT [sepals as long as the petals]

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stamens 6; NOT [stamens 3 or 6]

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capsule at most not much longer than the perianth; NOT [capsule much longer than the perianth]

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capsule shorter; NOT [capsule 6-9 mm long]

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capsules lanceolate; NOT [capsules oblong]

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capsule tapered at the apex; NOT [capsule abruptly narrowed at the apex]

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seeds lacking appendages

 

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

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

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