Thelypteris quelpaertensis var. quelpaertensis("Obashorima")
Japanese name: オオバショリマ Scientific name:Thelypteris quelpaertensis var. quelpaertensis
[Overview]
A summer-green fern found in mountain forests.
The rhizome is short, creeping horizontally or ascending, with triangular-oblong, membranous scales.
The fronds are twice pinnately deeply divided, oblanceolate, 50–80 cm long and 12–25 cm wide.
The pinnae are cut deeply almost to the pinna axis; they are triangular-linear and sessile, and the lowest pinnae are small and ear-shaped.
The rachis is densely covered with scales.
The sori are borne near the margin, and the indusium is round-reniform.
The stipe is 20–40 cm long and straw-colored, densely covered with triangular-oblong, membranous scales.
The spore surface has no warty projections and is almost smooth.
