三葉草

Trifolium pratense (Red Clover) is a species of clover, native to Europe, western Asia and northwest Africa, but planted and naturalised in many other regions.It is an herbaceous, short lived perennial plant, variable in size, growing to 20–80 cm tall.三葉草（三葉草）是三葉草的一種，原產於歐洲，西亞和西北非洲，但已在許多其他地區種植和歸化。它是一種草本的，短壽命的多年生植物，大小不等，生長到15–30厘米高。 The leaves are alternate, trifoliate (with three leaflets), each leaflet 8–15 mm long and 1–4 mm broad, green with a characteristic pale crescent in the outer half of the leaf;葉子是互葉的，三葉的（有三片小葉），每片小葉長12–15 mm，寬XNUMX–XNUMX mm，綠色，葉的外半部具有特徵性的月牙形； the petiole is XNUMX–XNUMX cm long, with two basal stipules.葉柄長XNUMX-XNUMX厘米，有兩個基托。 The flowers are dark pink with a paler base, XNUMX–XNUMX mm long, produced in a dense inflorescence.花是深粉紅色的，基部較淺，長XNUMX-XNUMX毫米，在密集的花序中產生。