green penny fern
A small epiphytic fern (Lemmaphyllum microphyllum) native to East Asia, often found growing on rocks or tree trunks.
Green penny ferns were growing thickly on the rock.
Katakana spelling is common for this plant name; usually written in kana.
Kanji spelling is rare; the plant is usually written in kana.
The name マメヅタ (豆蔦) literally means 'bean ivy', referring to the small, bean-like leaves and its creeping habit. The exact origin is uncertain.