Mentha arvensis

Field Mint

Leaf Top
Moose Mountain Provincial Park
01-Aug-2003

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Arvensis:  Answers to key questions in Budd's Flora leading to this species.  
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flowers in axillary clusters, not terminal spikes

 
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Mentha: Answers to key questions from Budd's Flora and Flora of Alberta leading to this genus.
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leaves crenate to serrate, NOT palmately lobed

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inflorescences axillary

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flowers in axillary clusters; NOT solitary, NOT in axillary racemes

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flowers pedicellate

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flowers blue or lavender

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calyx indistinctly 2-lipped or regular

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calyx WITHOUT projection on upper side

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calyx WITHOUT hooks at tips of lobes

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corolla nearly regular (FOA), 4- or 5- lobed; hardly, if at all, 2-lipped

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4 anther-bearing stamens

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stamens equal in length

 

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Labiatae: Answers to key questions from Budd's Flora leading to this family.
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herbs

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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 or 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