形態学 | Page 2 | Ecological Notes Web

What are the differences between Solanum nigrum, Solanum sibiricum, Solanum nigrum, and Solanum nigrum? We'll explain how to distinguish between similar species!

Black nightshade, large black nightshade, American black nightshade, and glossy black nightshade all belong to the Solanaceae family and Solanum genus. They are very commonly seen in urban areas, and can even be found in green spaces in large cities. They are characterized by their round, black, ripening fruits, but the four species are very similar...

2025.05.15

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What's the difference between Lythrum salicaria and Lythrum anceps? We'll explain how to distinguish between these similar species!

Both Lythrum salicaria and Lythrum sibiricum belong to the genus Lythrum in the family Lythraceae, and are perennial herbs commonly found in waterside areas and wetlands. They are often planted in biotopes, and their flower shapes are almost identical, making it difficult for some to distinguish between the two species. However, in addition to the hair-like projections on the entire plant, the shape of the leaves...

2025.05.14

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マメアサガオとホシアサガオの違いは？似た種類の見分け方を解説！

マメアサガオとホシアサガオはいずれもヒルガオ科サツマイモ属に含まれ日本では野生化した外来種で、小さな花冠と上から見ると星形という点で共通しています。町中でも見かけますが混同されることがあるかもしれません。しかし、花の色という分かりやすい違い...

2025.05.13

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カシグルミ・オニグルミ・ヒメグルミ・サワグルミの違いは？似た種類の見分け方を解説！硬い果実はリスとネズミ専用に進化していた！？

カシグルミ・オニグルミ・ヒメグルミ・サワグルミはいずれもクルミ科に含まれ、鋸歯がある奇数羽状複葉によって特徴づけられる落葉高木です。日本の森林に生える他、カシグルミ・オニグルミ・ヒメグルミにおいては偽果と硬い果実の内部にいわゆる「クルミの実...

2025.05.12

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What are the differences between Chinese tallow tree and Japanese wax tree? We explain how to distinguish between similar species! Why did the white seeds, which contain a lot of fat, evolve?

Both the Chinese tallow tree (Toxicodendron sylvaticum) and the Japanese wax tree (Toxicodendron succedaneum) are deciduous trees, and both share the name "haze." This name comes from the fact that their fruits or seeds contain a large amount of fat, which has historically been used as wax. However, perhaps because of this, the Chinese tallow tree and the Japanese wax tree are often confused...

2025.05.08

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マグワ・ヤマグワ・ヒメコウゾの違いは？似た種類の見分け方を解説！

マグワとヤマグワはいずれもクワ科クワ属に含まれ日本の林縁のあちこちで見かける落葉低木で、どちらも養蚕で使用されてきたことで有名です。形態的には葉上面が無毛で不分裂葉と独特の3～5の切れ込みが入る分裂葉が入り交じる点が大きな特徴です。しかし2...

2025.05.07

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There are differences between Agapanthus and Clivia! We'll explain how to distinguish between these similar species! It turns out they've been mistakenly identified as the same species for a long time!?

Agapanthus and purple lily are both perennial plants belonging to the genus Agapanthus in the Amaryllidaceae family. While they are unique in that they both bear numerous blue, funnel-shaped flowers, making it unlikely to confuse them, the common misconception that "Agapanthus cultivated for ornamental purposes is the same as purple lily...".

2025.05.05

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What are the differences between evening primroses (Oenothera biennis), dwarf evening primroses (Oenothera japonica), common evening primroses (Oenothera parviflora), and large evening primroses (Oenothera biennis)? We'll explain how to distinguish between similar species! Why did they evolve to bloom in the evening?

Evening primrose (Oenothera biennis), small evening primrose (Oenothera japonica), common evening primrose (Oenothera parviflora), and large evening primrose (Oenothera japonica) are all herbaceous plants belonging to the genus Oenothera in the family Onagraceae. Although they are introduced species, they are frequently seen in urban areas. Among the Oenothera species, these four species differ from the flowers we usually see, as they bloom in the evening with four petals...

2025.05.02

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What's the difference between Tenningiku and Otenningiku? We'll explain how to distinguish between these similar species! Actually, telling them apart is quite difficult...?

Both *Lysimachia japonica* and *Lysimachia japonica* are herbaceous plants belonging to the genus *Lysimachia* in the Asteraceae family. They are characterized by their spherical or convex receptacle and the bicolored ray florets. Due to their beautiful colors, they are sometimes cultivated for ornamental or landscaping purposes...

2025.05.01

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