Agastache foeniculum

      
Giant-Hyssop

Flower Front

Turtle Mountain Provincial Park, Manitoba
30-July-2004

When applied to the stamens, upper and lower refer to the point of attachment on the corolla tube.  Lower means closer to the base of the corolla tube and upper means farther away from the base. 

Flora of the Great Plains states that the upper pair of stamens is exserted between the lower pair. This is true; the upper stamens cross the lower ones in the portion of the corolla tube obscured in this picture.

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Agastache:  Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus.  
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plants perennial; NOT annual

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stem glabrous; NOT pubescent

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flowers in a terminal, spike-like inflorescence; NOT in axillary clusters, NOT forming an obvious terminal inflorescence

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inflorescence a more or less elongated raceme; NOT a more or less globose head

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inflorescence a raceme of oppositely placed clusters of flowers; NOT a raceme of oppositely placed flowers

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spikes symmetrical; NOT strongly one-side

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bracts much shorter than and differing from the stem leaves; bracts NOT grading into the stem leaves

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calyx longer on upper than lower side, somewhat oblique at throat; calyx NOT [regular, clearly 5-lobed]

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calyx indistinctly or not at all 2-lipped, one lobe may be larger than the others; NOT [calyx distinctly 2-lipped, the upper lip 3-toothed, the lower one 2-lobed]

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calyx NOT [distinctly 5-toothed, the upper tooth almost as wide as the lower 4 together]

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calyx lacking a helmet-shaped projection on the upper side

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calyx 15-nerved or more; NOT 5-10 nerved

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corolla 2-lipped; NOT [more or less regular, 4-lobed]

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corolla blue; NOT [white with purple dots]

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stamens didynamous; NOT all of equal length

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upper pair of stamens longer than the lower pair; NOT shorter than the lower pair

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stamens 4; NOT 2

 
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Labiatae: Answers to key questions in Budd's Flora leading to this family.
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herbs; NOT shrubs, NOT trees

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plants green or with some chlorophyll

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plants NOT aquatic

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stems square

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leaves NOT bearing bladders

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leaves opposite

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flowers NOT in heads, NOT in form resembling a head, NOT in spikes

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flowers with two floral rings, but with the petals wholly or partly united forming a tube or bell

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corolla irregular

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ovary superior

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fruit with 4 nutlets; NOT a many-seeded capsule