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Blechnum penna marina Alpine Water Fern This evergreen fern from South America is of a smaller stature, spreading slowly to make patches of refined, 4 to 8 inch fronds in cool, moist soil. New fronds are often bronzy. Hardy to 15°F, it can also be grown as a house plant. Plants A-B | C-D | E-H | I-L | M-R | S-Z |
