Cerastium caespitosum var. ianthes

Japanese: ミミナグサ(耳菜草) - ミミナグサ（英語表記）Cerastium caespitosum var. ianthes

A biennial plant of the Caryophyllaceae family. It is widely distributed in the temperate and warm-warm zones of eastern Asia, and is commonly found along roadsides and in fields in many places. The stems are thin and dark purple, and grow in clusters that branch from the base of the plant. They are densely hairy, with glandular hairs mixed in at the top. The leaves are ovate or oblong, blunt, hairy on both sides, and opposite each other. In spring, the tip of the stem branches, forming a cyme that produces many small white flowers. There are five sepals, which are oblong and hairy on the back. There are five petals, which are thin and tubular, and do not open flat like chickweed. The tip of each sepal is bilobed. There are ten stamens, and the pistil has five styles. A closely related naturalized plant, C. viscosum , is native to Europe and has spread as a weed in urban areas.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

ナデシコ科の越年草。アジア東部の温帯から暖帯に広く分布し，各地の路傍や田畑に普通にみられる。茎は細く，暗紫色を帯び，株の根もとから分枝して群生し，毛を密生，上部には腺毛が混る。葉は卵形ないし長楕円形，鈍頭で両面に毛があり対生する。春，茎の先端が分枝し，集散花序をなして白色の小花を多数つける。萼片は5枚で，長楕円形で背面に毛がある。花弁は5枚あり，細い筒状をなしハコベのように平開はしない。各片の先端は2裂する。おしべは 10本あり，めしべの花柱は5本。近縁の帰化植物であるオランダミミナグサ C. viscosumはヨーロッパ原産で，都会地に雑草として広がっている。

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