フィールド日記

裏道でニッコウネコノメが咲いていました。ネコノメソウの仲間は似ているものも多く、見分けるのが難しいものもあります。ニッコウネコノメはイワボタン(別名ミヤマネコノメ)の変種で、開花直後の葯が赤褐色であることと、がく片が斜開から平開することが特徴です。


"Nikkou-Nekonome (ニッコウネコノメ)" plants are in bloom on the back road. Plants belonging to "Nekonome-Sou (ネコノメソウ)" resemble each other, so sometimes it's difficult to tell one from the others. "Nikkou-Nekonome" plants are a variety of "Iwabotan (イワボタン)" plants. They are characterized by their dark red anthers immediately after flowering and their half-open or open sepals.

写真は共生の森のアカマツの冬芽です。クロマツの冬芽は白っぽいのに対し、アカマツの冬芽は赤っぽいので簡単に見分けることができます。写真にある小さい松ぼっくりのようなものは前年の春に咲いた雌花で、今年の秋に熟します。つまり、アカマツは花が咲いてから種子ができるまで、1年半ほどかかります。


The photo shows the winter buds of an "Aka-Matsu (アカマツ)" tree planted in the Kyoseinomori-Forest (共生の森). "Aka-Matsu" trees have reddish winter buds while "Kuro-Matsu (クロマツ)" trees have whitish ones. The small pinecone-like thing in the photo is a female flower that bloomed last year and will ripen this fall. In other words, it takes "Aka-Matsu" trees a year and a half to bloom and produce seeds.

写真は共生の森に植栽されたハルニレの冬芽と葉痕です。春に花が咲くのでハルニレと呼ばれています。写真は昨年伸びた枝で、毛が生えています。ハルニレは街路樹として植えられることもあります。

The photo shows a winter bud and a leaf scar of a "Haru-Nire (ハルニレ)" tree planted in the Kyoseinomori-Forest (共生の森). "Haru (ハル)" in its name means "spring" and it comes from the fact that they bloom in spring. The twig in the photo grew last year, so it is hairy. "Haru-Nire" trees are often planted as roadside trees.

中学校舎の中庭にコバノチョウチンゴケが見られます。早春から鮮緑色の新芽を出すためよく目立ちます。写真は雄花盤と呼ばれるつくりで、芽の先端に造精器が集まってカップ状の形をつくっています。


I found a moss called "Kobano-Chouchin-Goke (コバノチョウチンゴケ)" in the courtyard of the junior high school building. They stand out because they sprout new bright green shoots in the spring. The photo shows the part called "splash-cup", which is a cup-shaped tip of its shoot filled with its antheridia.

写真は共生の森のキブシの冬芽と葉痕（葉が落ちた痕）です。葉痕には維管束痕（水や養分を運ぶ管の集まりの痕）が３つあり、顔のように見えます。


下の写真は花芽です。もうすぐ開花しそうです。


The first photo shows a winter bud and a leaf scar of a "Kibushi (キブシ)" tree planted in the Kyoseinomori-Forest (共生の森). Each leaf scar has three vascular bundle scars, so it looks like a face.
The second photo shows its flower buds. They will bloom soon.

 写真はキャンプ場のホオノキの冬芽です。葉も花も大きいホオノキは、冬芽も大きく、3cm以上あります。冬芽は無毛の芽鱗に包まれています。（ホオノキの花のようすはこちら）


The photo shows a winter bud of a "Hoonoki (ホオノキ)" tree in the camp site. "Hoonoki" trees, whose leaves and flowers are large, have large winter buds, too. The winter buds are covered with hairless bud scales. (Click here to read an article about the flowers of "Hoonoki")

 写真は共生の森に植栽されているアワブキの冬芽です。冬芽は裸芽で、褐色の毛が密に生えており、手袋のような形をしています。アワブキはスミナガシやアオバセセリなどの蝶の幼虫の食樹です。


The photo shows the winter buds of an "Awabuki (アワブキ)" tree planted in the Kyoseinomori-Forest (共生の森). The buds categorized as "naked buds" are densely covered with brown hair and they look a glove. "Awabuki" trees are a host plant for the larvae of the butterflies such as "Suminagashi (スミナガシ)" and "Aoba-Seseri (アオバセセリ)".

写真は共生の森に植栽されたオニグルミの冬芽です。冬芽は裸芽で、短い毛が密生しています。葉痕（葉が落ちた痕）はT字型で、ヒツジやサルの顔のようにも見えます。


The photo shows the winter buds of an "Oni-Gurumi (オニグルミ)" tree planted in the Kyoseinomori-Forest (共生の森). The buds categorized as "naked buds" are densely covered with short hair. Their leaf scar is T-shaped and looks like a sheep or monkey face.

写真は駐車場近くのスギの雄花と球果です。雄花はまだ開いていないようで、花粉は出ていませんでした。ニュースによると、東海や関東では暖かくなる今週末にかけて花粉の飛散がピークにはいるようです。


球果は昨年に熟したもので、中には種子が入っていました。


The first photo shows the male flowers and cones of a Japanese cedar tree near the parking area. The male flowers didn't look to bloom yet, so the pollens hadn't come out. According to the news, in the Tokai region and the Kanto region, it's getting warmer from this weekend and the pollen dispersal is going to its peak.
These corns ripened last fall and I found the seeds inside them. (second photo)

ヒノキ林の林道でキッコウハグマの果実を見つけました。和名のキッコウは亀甲のことで、葉の形が亀の甲羅の形に似ていることに由来します。キッコウハグマは花が開かずに自家受粉して結実する閉鎖花をつけることで知られています。


I found the fruit of the "Kikkou-Haguma (キッコウハグマ)" plants on the path in the Japanese cypress woodland. "Kikkou" in the name means "turtle shell" and it comes from the fact that the shape of their leaves looks like turtle shells. They are known to produce cleistogamous flowers, which are non-opening self-pollinating flowers.