Trifolium Linnaeus. Clover.
A genus of about 280 species, annual and perennial herbs, nearly cosmopolitan (primarily north temperate).
Key advice:Draft key adapted from various published sources.
Ref: Chapel & Vincent (2013); Collins & Wieboldt (1992); Isely (1998); Vincent & Gillett (2023) In Flora of North America Editorial Committee (2023b); Zohary & Heller (1984). Show full citations.
Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.
© Gary P. Fleming | Trifolium reflexum | Original Image ⭷
© Gary P. Fleming | Trifolium arvense | Original Image ⭷
© Bruce A. Sorrie | Trifolium pratense | Original Image ⭷
© Bruce A. Sorrie | Trifolium arvense | Original Image ⭷
© Richard & Teresa Ware | Trifolium incarnatum CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Gary P. Fleming | Trifolium campestre | Original Image ⭷
© Erik Danielson | Trifolium arvense source | Original Image ⭷
© Gary P. Fleming | Trifolium calcaricum | Original Image ⭷
© Gary P. Fleming | Trifolium aureum | Original Image ⭷
© Richard & Teresa Ware | Trifolium hybridum CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Gary P. Fleming | Trifolium virginicum | Original Image ⭷
© Bruce A. Sorrie | Trifolium campestre | Original Image ⭷Feedback
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