ヒノキ林の林床などでオニカナワラビが見られます。オシダ科の常緑性のシダ植物です。葉は硬く光沢があります。似た仲間が多く、雑種も作りやすいため見分けるのが難しい種です。


 

"Oni-Kanawarabi" ferns are growing in the Japanese cypress woodland. They are evergreen ferns in the Dryopteridaceae family. Their fronds are thick and glossy. There are many similar species and they hybridize easily, so it's difficult to identify them.

 ナツミカンの実がなっています。果実は晩秋から黄色く色づきますが、まだ酸味が強いのでこのまま初夏まで待ってから収穫します。たくさん実をつける表年と少ない裏年を交互に繰り返す性質があると言われますが、今年は表年のようです。

A "Natsu-Mikan" tree is now bearing fruits. Their fruit starts to turn yellow in late fall, but it remains too sour at that time, so we wait until early summer to harvest it. The tree has on-years, when it produces a large amount of fruit, and off-years, when production is low. These alternate from year to year. This year appears to be an on-year.

オオバノアマクサシダが見られます。イノモトソウ科の常緑のシダ植物です。アマクサシダに似ていますが、全体的に大型です。胞子のう群は小羽片の縁につきます。

 

"Oobano-Amakusashida" ferns are growing. They are evergreen ferns in the Pteridaceae family. They are similar to a relative called "Amakusashida," but their entire plant is larger. Their sori are located along the edges of the pinnules.

イヌカタヒバが見られます。イワヒバ科の常緑のシダ植物です。本来の自生地である沖縄県では絶滅が危惧されていますが、園芸品が逸出したものが各地で広く野生化しています。

 

"Inu-katahiba" ferns are growing here. They are evergreen ferns in the Selaginellaceae family. Although they are an endangered species in their native habitat in Okinawa, some cultivated plants have escaped into the wild and are now found in various parts of Japan.

ミゾシダが見られます。ヒメシダ科のシダ植物です。普通は夏緑性ですが、温暖な地域では常緑性となります。胞子のう群は線形で、葉脈に沿ってつき、包膜はありません。

 

"Mizoshida" ferns are growing. They belong to the Thelypteridaceae family and are typically winter-dormant ferns, though they remain evergreen in warmer regions. Their line-shaped sori run along the leaf veins and are not covered with indusia.

 フモトシダが見られます。コバノイシカグマ科の常緑のシダ植物です。胞子のう群は、葉脈の先端に位置し、カップ状の包膜に包まれています。