Allophyllum is a small genus of flowering plants in the phlox family known as false gillyflowers. These are hairy, glandular annuals with tall, thin, branching stems topped with clusters of small tubular flowers in varying shades of purple. Some of the plants are sticky, and all have seeds which become gluey when wet. False gillyflowers are native to western North America, from Washington to Utah and northwestern Mexico.

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