Arrow-leaved Tearthumb is in flower. It has small clusters of white or pink flowers and tiny back-curved spines on the mid-rib of the leaves and on its 4 sided stem. Thus any attempt at pulling up this species results in lacerations - torn thumbs.
The closely related Halberd-leaved Tearthumb is equally well armed.
Look for them both sprawling over thickets, often in wet places.
John
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| Tearthumb flower |
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| Tearthumb spines |
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