The difficulty of distinguishing Trifolium mucronatum from T. wormskioldii is discussed under 33. T. wormskioldii. Populations in the United States rep­resent T. mucronatum subsp. lacerum; in Mexico, subsp. lacerum is found in the north, subsp. mucronatum (petals pink or reddish, flowers 1.5–1.7 cm, inflorescences 2.5–3.5 cm diam.) is widespread, and subsp. vaughanae J. M. Gillett (petals lavender or white, flowers 1.2–1.4 cm, inflorescences 1.5–2 cm diam.) is restricted to central Mexico (Guanajuato, San Luis Potosí) (J. M. Gillett 1980).

Distribution

w, sc United States, n Mexico.

Discussion

Subspecies 3 (1 in the flora).

Trifolium involucratum Ortega (1797), which pertains here, is a later homonym of T. involucratum Lamarck (1778, = T. cherleri Linnaeus).

Selected References

None.

Lower Taxa

Trifolium mucronatum subsp. lacerum