Tokutarō Itō

Ranzania (トガクシソウ, Togakushisou) is a monotypic genus of perennial herbs in the family Berberidaceae. The only species is Ranzania japonica. It is native to woodlands in the mountains of Honshu, Japan. This genus is named in honor of Ono Ranzan, who has been called "the Japanese Linnaeus". Fleshy stems of Ranzania form small colonies from an underground rhizome. Each stem bears two trifoliate compound leaves, and between the leaves is a single or more commonly a small cluster of drooping cup-shaped mauve flowers. These develop into an upright cluster of white berries. The haploid chromosome

Paulownia kawakamii, commonly known as the sapphire dragon tree, is a tree species in the family Paulowniaceae. The tree is native to Taiwan and southern China. It is deciduous and bears many large violet flowers in early spring before the leaves appear. Paulownia kawakamii is an IUCN Red List critically endangered plant species, that is threatened by habitat destruction in its native range. The species was first described by Tokutarô Itô in 1912.

Camellia lutchuensis is a species of camellia that is widespread in southeastern China, Taiwan, and the Ryukyu Islands of Japan. It is a shrub or small tree growing from 2–7 meters in height, with evergreen leaves and fragrant, white flowers.

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Tashiroea is a genus of plants in the family Melastomataceae. Species in this group resemble morphologically those in genus Bredia, but differ in indumentum of mature leaf (Glabrous, with yellowish uniseriate trichomes vs. Sparsely to densely puberulous or strigose, appressed or spreading uniseriate trichomes with glandular head or not), leaf surface sculpture (Furrowed vs. Not furrowed) and capsule (Ovary crown usually evanescent, capsule uncrowned with rounded or 4-humped top vs. Ovary crown persistent and enlarged, enclosing an inverted frustum-shaped depression at capsule top). This genus

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