Alpine Water Fern (Blechnum penna-marina subsp. alpina)

Overview

Alpine Water Fern (Blechnum penna-marina subsp. alpina) is a low, creeping fern from subalpine regions of the Southern Hemisphere. It forms dense mats of small, leathery fronds.

Taxonomy

Description

Sterile fronds are 5–15 cm long, pinnate, with rounded, leathery pinnae, forming a prostrate mat. Fertile fronds are taller, narrower, with contracted pinnae bearing sori. Rhizome is long-creeping.

Habitat and Cultivation

Found in wet alpine grasslands and bogs. In cultivation, needs constantly moist, acidic soil and cool temperatures. Ideal for trough gardens, bog gardens, or cool greenhouses.