(First upload on January 11 2012. Last on March 7 2018) [ 日本語 | English ]
Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
HOME > Plant list (植物リスト) > Lemnaceae (ウキクサ科) > Lemna minor
[Engler's syllabus (エングラー体系), APG = Araceae (サトイモ)]
Aquatic plants Lemna L. (アオウキクサ) Spirodela Schleid. (ウキクサ) |
Wolffiella Hegelm., 10 spp. Wolffia Horkel ex Schleid. (ミジンコウキクサ), 11 spp. |
W. arrhiza (ミジンコウキクサ), probably minimum seed plants of which oval body is 0.5 mm long |
Developing thallus (pl. thalli, 葉状体) that are not clearly divided into a stem and leaf because of the adhesion L. aequinoctialis Welw. (ナンゴクアオウキクサ) L. aoukikusa Beppu et Murata (アオウキクサ) |
ssp. hokurikuensis Beppu et Murata (ホクリクアオウキクサ) L. gibba L. (イボウキクサ), exoticL. japonica Landolt (ムラサキコウキクサ) L. minor L. (コウキクサ) L. minuta Kunth (ヒナウキクサ) |
L. perpusilla Torr. (チビウキクサ) L. trisulca L. (ヒンジモ), submerged (only reported from the Kurhiro Mire in Hokkaido) L. turionifera Landolt (キタグニコウキクサ) L. valdiviana Philippi (チリウキクサ) |
Koukikusa (コウキクサ, 小浮草), common duckweed or lesser duckweed Lifeform: evergreen aquatic forb → mostly dependent on asexual reproduction Distribution: cosmopolitan |
Habitat: stagnant water
Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト) |
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[1-4] in an artificial pond in the Arboretum of Hokkaido University adjacent to Poplar Boulevard in the Hokkaido University campus. [1] on September 27 2011. [2] on May 20 2015. [3/4] on June 12 2015. [5] along the shore of Echigo Pond in Ebetsu City on October 8 2017.