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Anaphalis margaritacea ssp. yedoensis

Anaphalis margaritacea ssp. yedoensis

Anaphalis margaritacea ssp. yedoensis

Anaphalis margaritacea ssp. yedoensis

Anaphalis margaritacea ssp. yedoensis

わが国の各地に分布しています。河原の砂地に生え、高さは30〜50センチになります。茎は叢生し、茎の中部でも枝分かれします。葉は線形で、裏面は灰白色の綿毛が密生します。葉の縁は全縁で裏側に巻きます。8月から10月ごろ、茎の上部に、頭花を散房状に咲かせます。頭花は黄色い管状花で、白色の花弁状の総苞片に包まれています。雌雄異株です。 
キク科ヤマハハコ属の多年草で、学名は Anaphalis margaritacea ssp. yedoensis。英名はありません。 
"Kawara-hahako" (Anaphalis margaritacea ssp. yedoensis) belongs to the Asteraceae (the Aster family). It is a perennial herb that is disributed throughout Japan. This herb grows in the sandy area of dry riverbeds, and up to a height of 30-50 cm. The stems are crowded and branched in the middle part of the stem. The leaves are linear and the grayish white fluffs bristle on the reverse side. They are entire and the edges are winding on the back sides. The flower-heads bloom in the corymbs-like inflorescence at the upper part of the stem from August to October. They are yellow tubular flowers, and are wrapped by white petal-like bracts. This plant is dioecious. 
大阪府河内長野市「花の文化園」にて、2017年09月22日撮影。 

Shu Suehiro
shu@botanic.jp