Ecological Notes Web

What are the differences between Paulownia (Paulownia) and Jacaranda (Jacaranda)? An explanation of how to distinguish between similar species.

Paulownia (Paulownia) and Jacaranda (Jacaranda jacaranda) are both deciduous trees with "paulownia" in their name, and are quite similar in that they both produce purple, tubular, bell-shaped flowers, and their flowering seasons are also close. Traditionally, the paulownia has been considered a sacred tree by the Japanese, and its flowers and wood have been highly valued, while the jacaranda...

2024.04.14

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What are the differences between Senecio japonica, Senecio crassipes, and Senecio stolonifera? An explanation of how to distinguish between similar species.

Senecio vulgaris, Senecio rupestris, and Senecio rupestris all belong to the Senecio tribe (or Senecio tribe) of the Asteraceae family and are introduced weeds with the name "borogiku" (ragwort). A key characteristic is that their flower heads (capitulum) are composed solely of tubular florets. These three species have similar names...

2024.04.13

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What are the differences between cucumber grass, water hyacinth, and flowering flower? How do they differ from forget-me-nots and wild purple flowers? This article explains how to distinguish between similar species.

Both *Myosotis scorpioides* and *Myosotis alpestris* belong to the genus *Myosotis* in the family Boraginaceae, and are biennial herbs characterized by entire leaves, scorpion-shaped inflorescences, blue corollas, and the presence of appendages. *Myosotis scorpioides*, in particular, is well-known and popular for its pretty blue flowers that bloom in spring. *Myosotis scorpioides* and...

2024.04.09

plant

What are the differences between common chickweed, green chickweed, and cow chickweed? We'll explain how to distinguish between similar species! There are even differences in their survival strategies!?

Common chickweed, green chickweed, and large chickweed all belong to the genus Stellaria in the family Caryophyllaceae, and are representative Japanese weeds that can almost certainly be found if you observe roadsides. In Japan, they are one of the seven spring herbs and are familiar to people as they are eaten in seven-herb rice porridge. However, these three species are usually referred to simply as "chickweed"...

2024.04.08

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What are the differences between chickweed (Cerastium holosteoides) and Dutch chickweed (Cerastium holosteoides)? How do they differ from other chickweed species? This article explains how to distinguish between similar species.

Both *Cerastium holosteoides* and *Cerastium holosteoides* belong to the genus *Cerastium* in the family Caryophyllaceae, and are extremely common plants that grow along roadsides in spring, representing typical "weeds." However, few people may be able to accurately distinguish between the two species. Distinguishing between the two may require close observation in some cases...

2024.04.07

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What are the differences between Japanese apricot (Prunus tomentosa), Japanese garden apricot (Prunus serrulata), and Japanese garden cherry (Prunus serrulata)? How do they differ from Japanese apricot (Prunus mume) and Japanese cherry (Prunus serrulata)? This article explains how to distinguish between similar species.

Japanese apricot (Prunus tomentosa), Japanese garden apricot (Prunus serrulata), and Japanese cherry (Prunus serrulata var. japonica) all belong to the genus Prunus in the family Rosaceae. Despite being shrubs, they are popular in horticulture because they produce beautiful flowers in spring, similar to plums and cherries. They are also known to be edible. However, their appearance is quite similar, leading to confusion...

2024.04.03

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What are the differences between sea radish, flower radish, and large-flowered wallflower? An explanation of how to distinguish between similar species.

Sea radish, flower radish (Raphanus sativus), and large-flowered radish (Raphanus erythrosora) all belong to the Brassicaceae family, and their names sometimes include "radish." They are herbaceous plants that are cultivated for either ornamental or edible purposes and have also become naturalized. They are characterized by their purple, cross-shaped flowers...

2024.03.29

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What are the differences between Pyracantha coccinea, Pyracantha japonica, and Pyracantha sulphurea? We explain how to distinguish between similar species! Is it a myth that Pyracantha causes sudden death in waxwings?

Pyracantha coccinea, Pyracantha japonica, and Pyracantha serrulata all belong to the genus Pyracantha in the Rosaceae family. They are characterized by their bright red berries that appear in winter and are frequently cultivated for ornamental purposes. In horticulture, however, this group is collectively referred to as "Pyracantha" or "Pyracantha" based on its genus name...

2024.03.26

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What are the differences between Ilex rotunda, Ilex crenata, Ilex serrata, and Ilex serrata? An explanation of how to distinguish between similar species.

Ilex rotunda, Ilex crenata, Ilex serrata, and Ilex serrata all belong to the Ilex genus of the family Aquifoliaceae. They not only grow in evergreen broad-leaved forests but are also frequently seen planted in parks and gardens, making them extremely familiar and common evergreen trees in Japan. They share thick leaves and beautiful red fruits...

2024.03.25

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What are the differences between Shepherd's Purse, Lepidium virginicum, Lepidium thunbergii, and Arabidopsis thunbergii? An explanation of how to distinguish between similar species.

Shepherd's purse, lacecap shepherd's purse, dog shepherd's purse, and Arabidopsis thaliana all belong to the Brassicaceae family, and among them, the one with the name "shepherd's purse" is a representative weed of Japan. It is characterized by flowering in early spring and quickly producing flat fruits. However, despite its fame, these four species...

2024.03.22

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