Urticales is an order of flowering plants. Before molecular phylogenetics became an important part of plant taxonomy, Urticales was recognized in many, perhaps even most, systems of plant classification, with some variations in circumscription. Among these is the Cronquist system (1981), which placed the order in the subclass Hamamelidae [sic], as comprising:
Potamogeton is a genus of aquatic, mostly freshwater, plants of the family Potamogetonaceae. Most are known by the common name pondweed, although many unrelated plants may be called pondweed, such as Canadian pondweed. The genus name means "river neighbor", originating from the Greek potamos (river) and geiton (neighbor).
Ruppia, also known as the widgeonweeds, ditch grasses or widgeon grass, is the only extant genus in the family Ruppiaceae, with eight known species. These are aquatic plants widespread over much of the world. The genus name honours Heinrich Bernhard Rupp, a German botanist (1688-1719). They are widespread outside of frigid zones and the tropics.
Nobuyuki Tanaka is an economic botanist at the Tokyo Metropolitan University, the Makino Botanical Garden in Kōchi Prefecture, Japan.
Phalaenopsis stobartiana, also known as 滇西蝴蝶兰 in Chinese, is a species of epiphytic plant in the family Orchidaceae. It is endemic to Hainan, China. The specific epithet stobartiana refers to William Culley Stobart. The Stobart family were the principal landowners and colliery owners in the 19th century in England.
Tricyrtis chinensis is a Chinese species of herbaceous plant in the lily family. It occurs in southeastern China.
Lemna trisulca L. is a species of aquatic plants in the arum family Araceae. It has a subcosmopolitan distribution. Unlike other duckweeds, it has submerged rather than floating fronds, except when flowering or fruiting. Also unlike other duckweeds, a large number of fronds remain attached to each other at a time.
Filifolium is a genus of flowering plants in the daisy family.
Hololeion is a genus of East Asian flowering plants in the family Asteraceae. It is native to Japan, Korea, China, and the Russian Far East.
Potamogeton lucens, or shining pondweed, is an aquatic perennial plant native to Eurasia and North Africa. It grows in relatively deep, still or slow-flowing, calcareous freshwater habitats.
Potamogeton obtusifolius, known as blunt-leaved pondweed, is an aquatic plant in the genus Potamogeton. It grows mainly in mesotrophic to eutrophic lakes, ponds and ditches, rarely in brackish water. It occurs primarily in Central Europe, the British Isles, Fennoscandia and eastern North America.
Potamogeton maackianus is an aquatic plant species in the genus Potamogeton. It is found in slow moving fresh water.
Potamogeton octandrus is an aquatic plant species in the genus Potamogeton. It is found in slow-moving fresh water. The specific epithet means 'eight-stamened'.
Potamogeton wrightii, is an aquatic plant species in the genus Potamogeton. It is found in slow-moving fresh water.
Nechamandra is a monotypic genus of an aquatic plant family Hydrocharitaceae. The sole species is Nechamandra alternifolia. It is found in slow moving fresh water.
Norio Tanaka is an aquatic botanist at Tsukuba Botanical Garden, National Science Museum, Tokyo, Japan.
Najas tenuis is a species of aquatic plant found in freshwater habitats, especially still or slow-moving waters, like ponds and rice fields.
Prunus × nudiflora is a Korean native cherry tree originating from Jeju Island. It is a distinct species from Japanese native Yoshino cherry. King cherry is a rare plant and listed as an endangered species. As of April 2017, 194 king cherry trees were growing around Mt. Halla in Jeju Island. According to Gen-ichi Koidzumi, king cherry is erroneously believed to be discovered by a French missionary Émile Joseph Taquet although what he discovered was a different species.
Patis is a genus of grasses in the Stipeae tribe of the grass family, found in China, Korea, Japan, eastern Canada, and north central and eastern United States.
Acta Phytotaxonomica et Geobotanica (APG) is a scientific journal of plant taxonomy and botany published by the Japanese Society for Plant Systematics (日本植物分類学会). The journal was established along with the Societas Phytogeographica in 1932 by Gen-ichi Koidzumi. According to the International Plant Names Index, over 3,300 plant names have been first published in the journal.
