Polystichum microchlamys

Stems erect. Leaves arching, 3–8 dm; bulblets absent. Petiole 1/8–1/4 length of leaf, densely scaly; scales brown, diminishing in size distally. Blade broadly lanceolate, 1-pinnate-pinnatifid, base slightly narrowed. Pinnae narrowly lanceolate, not overlapping, in 1 plane, 3–13 cm; base oblique, proximal acroscopic segments enlarged; margins incised to costa but segments sessile and adnate to costa for at least 2 mm, segments excised and decurrent, serrulate-spiny with teeth spreading to ascending; apex acute with subapical and apical teeth same size; microscales filiform, dense abaxially, sparse adaxially. Indusia erose-dentate. Spore color unknown.

Habitat: Terrestrial
Elevation: 0–100 m

Distribution

• Generated Map
• Legacy Map

Alaska, Asia in Kamtchatka and Japan.

Discussion

Polystichum microchlamys is found in the flora only on Attu, at the western tip of the Aleutian Archipelago.

Selected References

None.

Lower Taxa

None.