Close-up View of Red Clover
- Photographic study by Brian Johnston of Trifolium pratense, with many fine images, both macroscopic and microscopic.
- http://www.microscopy-uk.org.uk/mag/artjun06/bj-clover.html

Clover
- Photographs and information from Wikipedia on this leguminous plant used as a fodder crop, including its classification, varieties and cultivation.
- http://en.wikipedia.org/wiki/Clover

Shamrock
- Derived from an Irish word meaning “little clover”, various species claim the title of Shamrock. Information on growing the plant, its connection with St Patrick and use as an emblem.
- http://www.tippitiwitchet.co.uk/shamrock.html

Trifolium pratense
- Two photographs of the flowers of Red Clover.
- http://www.floralimages.co.uk/ptrifoprate.htm

Starry Clover: Trifolium stallatum
- Several photographs of this species, rare in the UK, and an excerpt from the book “Unto the Hills” by Patrick Coulcher.
- http://www.glaucus.org.uk/starry.htm

Trifolium: Clover
- Provides a description, species list and identification guide, with photographs of T. pratense and T. repens.
- http://www.discoverlife.org/nh/tx/Plantae/Dicotyledoneae/Fabaceae/Trifolium/index.html

Trifolium medium
- Description of Zigzag Clover and a photograph of the flower.
- http://www.plant-identification.co.uk/skye/leguminosae/trifolium-medium.htm

Trifolium dubium
- Description of Lesser Trefoil and a photograph.
- http://www.plant-identification.co.uk/skye/leguminosae/trifolium-dubium.htm

Trifolium campestre
- Several photographs of Hop Trefoil and its brief description.
- http://www.plant-identification.co.uk/skye/leguminosae/trifolium-campestre.htm

Trifolium repens
- Description of White Clover and a photograph of the flower.
- http://www.plant-identification.co.uk/skye/leguminosae/trifolium-repens.htm