Dryopteris amurensis Amur wood fern

Synonym Leptorumohra amurensis Epithet means "from the Amur River" in Siberia. Evergreen, 1 to 2 ft. (30 to 60 cm). Zones 4 to 8.

description: The rhizome is short-creeping and the major portion of the frond is a tall stipe. Blades are broadly triangular, tripinnate at the base with elongate lower pinnules resulting in basal pinnae resembling lopsided triangles. The whole could masquerade as a Gymnocarpium. Sori are medial with a kidney-shaped indusium.

range and habitat: Dryopteris amurensis colonizes in high-elevation coniferous forests in Siberia, China, Japan, and Korea.

Dryopteris affinis 'Revolvens' with its turned-under margins in the Schieber garden.

mensely popular with its 2- to 4-ft. (60- to 120-cm) arching fronds displaying crests at the apex as well as at the tips of the pinnae. Use it as a focal point.

'Cristata Angustata' (crested and narrow) with nicely proportioned slender and short fronds is an alternate choice, instead of'Cristata', for decorating small spaces.

'Grandiceps' (with large terminal crests) is so overly crested that it appears to be covered with cheerleader pom-poms.

culture and comments: Although described in many reference works, this feather-topped species is not often seen in cultivation. When available it should be extremely cold tolerant and acclimate in a shaded, moist woodland garden where it should not be allowed to dry out. It is not likely to be a suitable choice for areas with hot summer days and nights.

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