Salsola komarovii; saltwort species
A specific species of saltwort, a plant in the amaranth family. The Japanese name is usually written in kana. Cross-referenced with 陸鹿尾菜 (おかひじき), another saltwort species.
See also: おかひじき
Miruna is an annual plant that grows on sandy soil near the coast.
Miruna and okahijiki are plants of the same family.
Katakana spelling is common for this plant name; usually written in kana.
Kanji spelling is rare and may not be widely recognized; lists it but the word is usually written in kana.
The name ミルナ likely derives from 海松 (みる, a type of seaweed) and 菜 (な, vegetable/greens), referring to its seaweed-like appearance. The exact historical derivation is uncertain.