アフリカきんせんか (アフリカ金盞花) [Index] [Back]

Dimorphotheca sinuata 'Primavera'

Dimorphotheca sinuata 'Primavera'

Dimorphotheca sinuata 'Primavera'

南アフリカ西部およびナミビアに分布しています。冬季降雨地帯に多く、砂地の砂漠にも生え、高さは30センチほどになります。葉は線形から披針形で、鋸歯があります。春に黄橙色に焦げ茶色の頭花を咲かせます。園芸品種も多く作出され、広く各地で栽培されています。属名の「ディモルフォセカ」は2形の果実を意味し、舌状花できる種子(角張っている)と、筒状花にできる種子(薄い円盤状)の、形状が異なることに由来しています。別名で「ディモルフォセカ」とも呼ばれ、写真は園芸品種の「プリマベーラ(Primavera)」。 
キク科アフリカキンセンカ属の一年草で、学名は Dimorphotheca sinuata (syn. Dimorphotheca aurantiaca)。英名は Cape marigold、African daisy。 
The Cape marigold (Dimorphotheca sinuata) belongs to Asteraceae (the Aster family). It is an annual herb that is distributed in western South Africa and Namibia. It is abundant in winter rainfall areas and also grows in sandy deserts, reaching a height of about 30 cm. The leaves are linear to lanceolate and serrated. It produces yellowish-orange, dark brown flower heads in spring. Many garden varieties have been produced, and it is widely grown in many areas. The genus name "Dimorphotheca" comes from the Greek "dis" "morphe" and "theka", meaning "two shaped fruit", referring to the different shapes of the seeds produced by the ray flowers (angular) and the seeds produced by the tubular flowers (thin disks). it is also known as "Dimorphotheca", the photos show the garden variety 'Primavera'. 
宮城県大河原町大谷にて、2023年03月29日撮影。 

Shu Suehiro
shu@botanic.jp