55. BLUNT-LOBED WOODSIA
Woodsia obtusa
Small, slightly downy, fronds broadly lanceolate, nearly twice-pinnate. On rocks. P. [202].
56. NORTHERN WOODSIA
Woodsia hyperborea
Very small, smooth or nearly so, fronds narrowly oblong-lanceolate, once-pinnate, pinnæ cordate-ovate or triangular-ovate, 5-7 lobed. On moist rocks. P. [203].