Alopecurus geniculatus
- Several photographs and some identifying features of Marsh Foxtail.
- http://www.plant-identification.co.uk/skye/gramineae/alopecurus-geniculatus.htm

Alopecurus pratensis
- Photographs of flower spike and spikelets of Meadow Foxtail.
- http://www.plant-identification.co.uk/skye/gramineae/alopecurus-pratensis.htm

Alopecurus myosuroides
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- http://delta-intkey.com/pooid/www/descr041.htm

Alopecurus carolinianus
- Line drawings of the inflorences, flowering parts, and fruit.
- http://www.csdl.tamu.edu/FLORA/image/k4368000.htm