October 2023 | Ecological Notes Web

What's the difference between Fatsia japonica and Fatsia japonica? We'll explain how to distinguish between similar species! The glossy leaves are actually a sunbathing spot for insects!?

Both Fatsia japonica and Fatsia japonica belong to the Araliaceae family and are evergreen trees most characterized by their large, palmately lobed leaves. Both can be observed both outdoors and in gardens. They share many other similarities, which can sometimes lead to confusion. However, distinguishing between them is relatively easy, based on leaf size, hairiness, etc.

2023.10.24

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ヤブコウジ・ツルコウジ・マンリョウ・カラタチバナの違いは？似た種類の見分け方を解説！「葉で窒素固定をする」のは嘘だった！？

ヤブコウジ・ツルコウジ・マンリョウ・カラタチバナはいずれもサクラソウ科ヤブコウジ属に含まれ、照葉樹林で自生しますが、秋～冬に赤い球形の果実をつけることからセンリョウ科のセンリョウなどとともに観賞用に盛んに栽培されている常緑小低木です。日本で...

2023.10.22

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コミカンソウ・ヒメミカンソウ・ナガエコミカンソウの違いは？似た種類の見分け方を解説

コミカンソウ・ヒメミカンソウ・ナガエコミカンソウはいずれもコミカンソウ科コミカンソウ属に含まれ、畑や道端に生え、花よりも無数のミカンのような小さな緑色～赤色の果実をつけている様子が印象的な一年草です。これら3種はコミカンソウ属の中でも高頻度...

2023.10.20

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What are the differences between Clerodendrum trichotomum and Clerodendrum frequens? An explanation of how to distinguish between similar species.

Both Clerodendrum trichotomum and Clerodendrum sibiricum belong to the mint family and are sometimes cultivated for ornamental purposes. Their most significant commonality is the similar shape of their flowers. Specifically, both have very long stamens and pistils that curve downwards (curl) and protrude far from the flower. Therefore...

2023.10.15

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キンケイギク・オオキンケイギク・ハルシャギク・ホソバハルシャギクの違いは？キバナコスモスとの違いは？似た種類の見分け方を解説

キンケイギク・オオキンケイギク・ハルシャギク・ホソバハルシャギクはいずれもキク科ハルシャギク属に含まれ、特徴は少ないものの、「非常に派手な黄色の一重咲き～二重咲きのキク」という印象を受ける一年草または越年草です。特にオオキンケイギクは特定外...

2023.10.10

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What are the differences between cosmos, yellow cosmos, chocolate cosmos, and marigolds? We explain how to distinguish between similar varieties.

Cosmos, yellow cosmos, and chocolate cosmos all belong to the Cosmos genus of the Asteraceae family. Although they are introduced species in Japan, they have become representative autumn landscape plants, as evidenced by their alternative name, "autumn cherry blossom," and are widely cultivated. They are characterized by their large, beautiful ray florets and achenes...

2023.10.06

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What are the differences between Japanese shallots (rakkyo), wild shallots (yamarakkyo), and thread shallots? How do they differ from yellow thread shallots (kii-itorakkyo)? This article explains how to distinguish between similar species.

Japanese shallots (rakkyo), wild shallots (yamarakkyo), and thread shallots (itorakkyo) all belong to the genus Allium in the Amaryllidaceae family and share the common characteristic of having the word "rakkyo" in their Japanese names. Japanese shallots are eaten as pickled shallots, while wild shallots and thread shallots are wild species native to Japan...

2023.10.05

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What are the differences between Polygonum capitatum and Polygonum capitatum? An explanation of how to distinguish between similar species.

Both Polygonum capitatum and Polygonum persicaria belong to the genus Polygonum in the family Polygonaceae. They are among the most common perennial herbs in the genus Polygonum, and Polygonum persicaria in particular can be found very commonly on the stone walls of houses in urban areas. While the genus Polygonum contains a vast number of species, these two species share morphological similarities...

2023.10.04

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