Galeopsis tetrahit

Hemp-nettle

Middle Stem Leaf Bottom
2 Miles South, 2 Miles West of Tantallon
20-June-2003

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Tetrahit: Answers to key questions from Budd's Flora (BF) leading to this species.
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corolla tube scarcely longer than the calyx; NOT 2-3 times as long

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corolla tube 1.5 to 2 cm long; NOT 2-3 cm long

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corolla tube purple, NOT yellow

 
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Galeopsis: Answers to key questions from Budd's Flora (BF) and Flora of Alberta (FOA) leading to this genus.
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annual weed

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stems erect or ascending; NOT decumbent; NOT creeping

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leaves NOT palmately lobed

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leaves crenate and serrate

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flowers in axillary clusters

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calyx indistinctly 2-lipped or regular

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calyx lobes as long as, or longer than, the tube

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calyx usually 5-toothed

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calyx lobes with sharp, spiny, glabrous tips; calyx lobes NOT herbaceous and pubescent to the tip

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calyx without hooks at tips of lobes

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calyx 5-10 nerved; NOT 13 or 15-nerved; NOT obscurely nerved

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calyx without a projection on upper side

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corolla distinctly 2-lipped

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anther-bearing stamens 4

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upper pair of stamens shorter than the lower pair

 
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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