Masao Kitagawa

Angelica acutiloba is a perennial herb from the family Apiaceae or Umbelliferous (carrot or parsley family). It is predominately in Japan and perhaps endemic (unique). It is now distributed widely and cultivated in Jilin, China, Korea, Taiwan and Indonesia. The common name of Angelica acutiloba is known as tōki (トウキ, 当帰) in Japanese. The root was used as a substitute for the crude drug tōki (当帰) in Kampō medicine (漢方製薬 Kanpō Seiyaku), which is a Japanese adaptation of Traditional Chinese medicine. The Traditional Chinese medicine uses the root of a different species A. sinensis, Chinese: 当归;

Persicaria longiseta is a species of flowering plant in the knotweed family known by the common names Oriental lady's thumb, bristly lady's thumb, Asiatic smartweed, long-bristled smartweed, low smartweed, Asiatic waterpepper, bristled knotweed, bunchy knotweed, and tufted knotweed. It is native to Asia (China, India, Russia, Japan, Malaysia, etc.), and it is present in North America and Europe as an introduced species and often a weed. Persicaria longiseta is an annual herb with stems 30 to 80 centimeters (12–32 inches) long, sometimes reaching one meter (40 inches). The hairless, branching

Dystaenia is a genus of flowering plants belonging to the family Apiaceae. Its native range is Temperate Eastern Asia. Species: Dystaenia ibukiensis (Y.Yabe) Kitag. Dystaenia takeshimana (Nakai) Kitag.

Iris typhifolia is a species in the genus Iris, also the subgenus Limniris and in the series Sibiricae. It is a rhizomatous herbaceous perennial, from China. It has slender, twisted leaves, deep green slender hollow stem and 2 violet-blue flowers. It is cultivated as an ornamental plant in temperate regions.

Iris kobayashii is a beardless iris in the genus Iris, in the subgenus Limniris and in the series Tenuifoliae of the genus. It is a rhizomatous herbaceous perennial, from China. It has slightly twisted leaves, short stems and 1 to 2 purple or blue and yellow flowers.

Ferulopsis is a genus of flowering plants in the umbellifer family Apiaceae, native to the Altai, Mongolia and Siberia. They form cushions which are ecologically important in the cold areas in which they live. Some authorities have it as a synonym of Phlojodicarpus.

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Spuriopimpinella is a genus of flowering plants belonging to the family Apiaceae. Its native range is Southern Russian Far East to China and Japan. Species: Spuriopimpinella arguta (Diels) X.J.He & Z.X.Wang Spuriopimpinella brachycarpa (Kom.) Kitag. Spuriopimpinella brachystyla (Hand.-Mazz.) Kitag. Spuriopimpinella calycina (Maxim.) Kitag. Spuriopimpinella komarovii Kitag. Spuriopimpinella nikoensis (Y.Yabe ex Makino & Nemoto) Kitag.

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Rorippa barbareifolia, the hoary yellowcress, is a plant species reported from Manchuria, Inner Mongolia, Mongolia, Siberia, Alaska, Yukon and Saskatchewan. It grows in wet habitats (though not completely submerged). It can be found along forest borders, in ditches, on stream banks, etc. Rorippa barbareifolia can easily be distinguished from other species in the genus by its multi-valved fruits. Rorippa barbareifolia fruits have 3-6 valves, usually 4, while other species generally have 2, rarely 3. The plants are annual herbs with yellow, 4-parted flowers.

Puccinellia hauptiana is a species of flowering plant belonging to the family Poaceae. Its native range is Eastern Europe to Korea, Alaska.

Pterygopleurum is a genus of flowering plants belonging to the family Apiaceae. Its native range is Eastern China to Japan. Species: Pterygopleurum neurophyllum (Maxim.) Kitag.

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Gagea nakaiana is an Asian species of plants in the lily family. It is native to northeastern China (Heilongjiang, Jilin, Liaoning), Russia (Kamchatka, Kuril Islands, Sakhalin, Primorye, Altay Krai, Krasnoyarsk), Japan, Korea, Nepal, Bhutan, Pakistan, and northern India. Gagea nakaiana is a bulb-forming perennial up to 20 cm (8 in) tall. Flowers are yellow.

Bupleurum stenophyllum is a species of Bupleurum native to Japan, Korea, and mainland China; it is also introduced to Taiwan. Its root is used as a traditional medicine in East Asia known as Radix Bupleuri (柴胡). Some sources treat Bupleurum falcatum as a species complex incorporating many East Asian species such as Bupleurum stenophyllum, Bupleurum scorzonerifolium, and Bupleurum chinense. However, molecular studies indicate that these are all separate species.

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Allium elegantulum is a species of onions endemic to the province of Liaoning northeastern China. The plant grows on cliffs and in other rocky or sandy places. Allium elegantulum produces a cluster of narrow bulbs rarely more than 5 mm across. Scapes are up to 20 cm tall, round in cross-section. Tepals are white to pale pink with a darker red midvein.

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Persicaria foliosa is a species of flowering plant belonging to the family Polygonaceae. Its native range is Northern and Northeastern Europe to Japan.

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