a close-up of dryopteris carthusiana (shield fern) with vibrant green fronds

background biodiversity botanical botany bright bush carthusiana caucasus cultivated decorative design dryopteris ecosystem environment exotic fern flora foliage forest fronds garden green greenery groundcover growth habitat horticulture indoor landscape leaf leaves lush natural nature ornamental outdoor perennial plant potted shade shield shrubs tropical undergrowth vegetation vibrant wild woodland