Goodyera oblongifolia
 
Rattlesnake-Plantain

Flower Bottom,
Lateral Sepals Removed

Centre Block, Cypress Hills Interprovincial Park
26-July-2012

Note the upper sepal and the two petals adjacent to it are connivent to form a hood over the lip and column.

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Oblongifolia: Answers to key questions in Budd's Flora and Flora of Alberta leading to this species. 
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stem 30-45 cm high; NOT [stem 10-20 cm high]

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leaves 3-6 cm long; NOT [leaves 1-3 cm long]

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raceme 6-10 cm long; NOT [raceme 3-6 cm long]

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flowers to 10 mm long; NOT [flowers to 5 mm long]

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lip scarcely saccate; NOT [lip deeply saccate]

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lip with incurved margins; NOT [lip with recurved or flaring margins]

 

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Goodyera: Answers to key questions in Budd's Flora (BF) and Flora of Alberta (FOA) leading to this genus. My comments are in red.
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plants NOT saprophytic

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plants with chlorophyll

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leaves normal; NOT [leaves reduced to scales] (BF) These do not refer to the scale leaves between the basal leaves and the raceme.

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leaves with well-developed blades; NOT [plants with reduced non-green leaves] (FOA) These do not refer to the scale leaves between the basal leaves and the raceme.

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leaves forming a rosette at the base of the stem These do not refer to the scale leaves between the basal leaves and the raceme.

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stem with scale leaves between the foliage-leaves and the raceme; NOT [stem naked between the foliage-leaves and the raceme]

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NOT [plants with a sub-basal, solitary leaf]

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NOT [leaves 2, opposite or nearly so, sessile, at about the middle of the stem]

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leaves ovate to obovate; NOT [leaves linear or lanceolate]  These refer to the basal leaves, not the scale leaves between the basal leaves and the raceme.

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leaves somewhat fleshy These refer to the basal leaves, not the scale leaves between the basal leaves and the raceme.

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[basal] leaves strongly reticulate (BF) The  basal leaves of this specimen are not strongly reticulate.

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[basal] leaves often blotched with silvery white (FOA) 

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flowers 2 to many, in racemes or spikes; NOT [flower solitary]

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flowers mostly smaller than to 8 cm long

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flowers not spurred; NOT [flowers distinctly spurred]

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NOT [lip large, inflated, and moccasin-shaped]

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lip saccate; NOT [lip fiddle-shaped]

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fertile anther 1; NOT [fertile anthers 2]

 

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Orchidaceae: 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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perianth present, conspicuous, in two series of 3 segments, often  brightly colored; NOT [perianth absent or inconspicuous]

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perianth usually large, consisting of sepals and petals usually alike, but petals not deciduous, variously colored; NOT [perianth small, consisting of 3 green sepals and 3 deciduous whitish petals]

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flowers irregular; NOT [flowers regular]

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stamens 1 or 2; NOT [stamens 3 or 6]