classification

Why is black tea preferred over green tea in the UK? Are flies the only ones that visit tea plant flowers?

Tea plants contain essential nutrients like catechins and caffeine, making them an indispensable beverage in Japan, enjoyed both at home and on the go. As you may know, its origin lies in China, and it's a species not native to Japan. However, even in China, wild varieties haven't been confirmed, which is puzzling...

2022.02.21

plant

Chelidonium Majus Subsp Asiaticum Flower

What are the differences between Greater Celandine and Japanese Kerria? We'll explain how to distinguish between similar species! Are they poisonous? Why do Greater Celandine flowers bloom at an angle?

Both *Chelidonium majus* and *Cornus kousa* are wild species of the poppy family, composed of four yellow petals, so it can be difficult to distinguish between them. Their leaves can be differentiated by the presence or absence of serrations on the leaflets, and their flowers are almost identical, but there are differences in the arrangement of the inflorescence and the shape of the stamens and pistils...

2022.02.08

plant

What are the differences between Aucuba japonica, Aucuba japonica var. serrata, and Aucuba japonica var. japonica? We explain how to distinguish between similar species! Only fungus gnats were visiting the inconspicuous flowers!? Only bulbuls were eating the fruit!?

Aucuba japonica is distributed in evergreen broad-leaved forests of East Asia and is a very common plant in Japan, even in urban areas, where it's rare to go a day without seeing it. Several varieties of Aucuba japonica are known, and they are often classified into Aucuba japonica (in the narrow sense), Aucuba japonica var. nangokuensis, and Aucuba japonica var. dwarf. The differences between them are not easily discernible from their names alone...

2021.12.16

plant

Orthosiphon Aristatus Var Aristatus Flower

What species resembles Cat's Whiskers (Kumiskuching)? We'll explain how to distinguish them, and reveal that butterflies specialize in visiting the flowers! What are the effects of Kumiskuching tea?

*Cat's Whiskers* (Kumiskuching) is a popular ornamental horticultural plant in Japan, known for its long stamens. In Okinawa, it's called *Kumiskuching* and is sometimes used to make *Kumiskuching* tea. Several closely related species exist within the same genus, but they don't resemble each other very much. Japan...

2021.11.07

plant

What are the differences between Veronica persica, Veronica polifolia, Veronica undulata, and Veronica polifolia? We'll explain how to distinguish between similar species! Has Veronica persica been displacing Veronica polifolia?

Veronica persica, Veronica polifolia, Veronica undulata, and Veronica polifolia are four blue wild species found in fields and roadsides around the world. They are representative early spring flowers in Japan, and may be among the first plants whose names you learn when you become interested in weeds. However, all of them have blue to purple flowers, and their leaves...

2021.09.24

plant

There are differences between Japanese daffodils and regular daffodils! Are they poisonous? How do they differ from chives? Where are they native to? Why did the flowers evolve to bloom in winter?

Daffodils are a very popular ornamental plant in Japan, blooming in winter. However, a little research reveals that they are sometimes referred to as "Japanese daffodils" (Nihon-zuisen) or simply "daffodils." Is there a difference between Japanese daffodils and regular daffodils? Japanese daffodils are native to China...

2021.09.23

plant

What are the differences between Kibushi and Hachijo-kibushi? What are the different species in the Kibushi genus? We'll explain how to distinguish between similar species! Do the fruits turn your teeth black? Did the flowers have a strategy to attract different insects during the day and night?

Stachyurus praecox, once considered endemic to Japan, is now widely distributed throughout the country. Although there are only two distinct species, their varieties are quite diverse, making identification difficult. While some argue that these variations exhibit continuity and should not be distinguished, this article will deliberately avoid making distinctions...

2021.09.23

plant

There are differences between plumeria and Indian jasmine! We'll explain how to distinguish between similar species! When did it arrive in Hawaii? Is it poisonous? Were the flower's flashy colors and scent an evolutionary adaptation to deceive moths?!

Plumeria is a popular garden plant known for its vibrant, large flowers and fragrance, symbolizing the tropics. However, it is also known as Indian jasmine. The terms "plumeria" and "Indian jasmine" may have different meanings. In Japan, "Indian jasmine" often refers to a single, common variety...

2021.09.22

plant

How toxic is castor bean? What are its components? What are the uses of castor oil? Why is it considered safe despite being toxic? Its flowers are pollinated by both wind and insects! Its seeds are dispersed automatically and by ants!

Castor bean is a perennial plant said to originate from northeastern Africa, cultivated worldwide for commercial and ornamental purposes, and sometimes naturalized. It's almost impossible to mistake it for anything else. Its seeds, called "himashi," are rich in oil, and the extracted "castor oil" is used in cosmetics, shampoos, soaps, and more...

2021.09.22

plant

What are the differences between wisteria, mountain wisteria, and summer wisteria? We'll explain how to distinguish between similar species! Why is it so beloved by the Japanese? Were the flowers originally for bumblebees? Do wisteria pods pop and scatter?

Wisteria floribunda, mountain wisteria, and summer wisteria remain popular legumes, so much so that trellises are still provided for them. However, distinguishing between the three species can be difficult until you become familiar with them. Examining their flowering period and the direction in which their vines twine is crucial for identification. Wisteria has a long history, and is even mentioned in the oldest document in Japan, the "Kojiki," which dates back to the Nara period...

2021.09.22

plant