Trifolium pratense




Family Fabaceae (alt. Leguminosae)
Subfamily Faboideae
Tribe Trifolieae
Scientific name Trifolium pratense L.
Synonyms Lagopus pratensis (Linnaeus) Bernhardi; Trifolium alpicola Hegetschweiler; Trifolium baeticum Boissier; Trifolium borysthenicum Gruner; Trifolium brachystylos Knaf; Trifolium bracteatum Schousboe ex Willdenow; Trifolium carpaticum Porcius; Trifolium expansum Waldstein & Kitaibel; Trifolium fontanum Bobrov, in Komarov; Trifolium heterophyllum Trattinnick; Trifolium microphyllum Desvaux; Trifolium pensylvanicum Willdenow; Trifolium pratense L. forma album Alefeld; Trifolium pratense L. forma heterophyllum (Trattinnick) Alefeld; Trifolium pratense L. forma microphyllum (Desvaux) Alefeld; Trifolium pratense L. forma pratarum Alefeld; Trifolium pratense L. forma alpinum (Hoppe) Hoppe ex Alefeld; Trifolium pratense L. var. alpinum Hoppe; Trifolium pratense L. var. americanum Harz; Trifolium pratense L. var. anatolicum Freyn; Trifolium pratense L. var. collinum Gibelli & Belli; Trifolium pratense L. var. expansum (Waldstein & Kitaibel) Haussknecht; Trifolium pratense L. var. frigidum Gaudin; Trifolium pratense L. var. majus Boissier; Trifolium pratense L. var. nivale Koch; Trifolium pratense L. var. genuinum Rouy; Trifolium pratense L. var. sativum Schreber; Trifolium pratense L. var. spontaneum Willkomm; Trifolium pratense L. var. sylvestre Ducommun; Trifolium pratense L. var. villosum de Candolle; Trifolium pratense L. subsp. eupratense Ascherson & Graebner; Trifolium pratense L. subsp. nivale Ascherson & Graebner; Trifolium sativum (Schreber) Crome ex Boenninghausen
Common name (Japanese common name) murasaki tume-kusa (ムラサキツメクサ, 紫詰草 [meaning: purple packing weed]), aka tume-kusa (アカツメクサ, 赤詰草 [meaning: red packing weed])
(English common name) red clover, purple clover
Distribution (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa
(Other nations) [native] Russia, India, Pakistan, Afganistan, Caucasus, western Asia, Europa, northern Africa
Habitat Field, roadside
Chromosomal number 2n=14
Description Plants 30-60cm tall. Leaves ternate, leaflets each 2-3.5cm long, 1-2.5cm wide, petioles 2-20cm long. Flowers pink or purple (merely white) 13-15mm long, flowering in May to October. Perennial plants.
Reference Trifolium pratense L.
Trifolium pratense L.
Note Naturalized plants (introduces in Meiji era).



October 2006 at open field November 2006 at open field October 2006 at open field



Variation of flowers


June 2005 at open field June 2005 at open field