Triglochin maritima in Miyajima Island
Triglochin maritima in Miyajima Island
Triglochin maritima L. (Japanese name: Shibana) is a perennial herb of the family Juncaginaceae, growing in brackish muddy areas.
An endangered species Triglochin maritima and brackish water environments
A seaside arrowgrass, Triglochin maritima L. (Japanese name: Shibana) is a perennial halophytic herb of the family Juncaginaceae. The plant Shibana grows in marsh near sea. Leaves are linear with rounded tips sheathing basal leaves, and are bright green in color. The flowers are small and green in erect racemes; and the flowering season is September. It is distinguishable from other plants by its color and linear leaves.
The Japanese name Shibana is a derivation of “shioba-na”: “shioba” means a salt field like a salt evaporation pond, and “-na” means herbs or vegetables.
The habit of Shibana is a brackish water environment, resulting from mixing seawater and freshwater together. The brackish water environment changes constantly its salinity condition depending on tidal levels; the area is a difficult place to preserve. The pond in the Tsutsumiga-ura Nature Park located on the northwest side of Miyajima Island is a brackish water habitat, whose surrounding area is brackish marshes where Shibana grows at the habit along with Ruppia maritima L. (Ruppiaceae; Japanese name: Kawatsurumo) and Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer (Cyperaceae; Japanese name: Chaboi).
The plant Shibana is listed as an endangered species in the red list of Japan as well as the red list of Hiroshima Prefecture now, although it was previously widely distributed from Hokkaido to Kyushu in Japan.
（英語説明作成中）
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