Deparia acrostichoides
athyrie fausse-thélyptère, silver false spleenwort, silver glade fern, silvery false spleenwort, silvery glade fern, silvery-spleenwort
short-creeping.
dark red-brown at base, straw-colored distally, 10–45 cm, swollen, with 2 rows of teeth;
scales at base light brown, linear-lanceolate to lanceolate.
oblong-lanceolate, pinnate-pinnatifid, 30–80 × 12–25(–30) cm, narrowed to base, broadest near middle, acuminate at apex.
linear-oblong, base truncate, apex acuminate;
segments oblong, margins entire to slightly lobed, apex round to slightly pointed.
pinnate, lateral veins simple or 1-forked.
elongate, straight or hooked;
indusia ± thick, margin ± entire.
and veins with multicellular hairs.
= 80.
Deparia acrostichoides
Deparia acrostichoides belongs to sect. Lunathyrium. Closely related Asian ferns have been treated as conspecific with Deparia acrostichoides, but D. acrostichoides differs from them in having creeping stems with rather distant leaves and pinnate-pinnatifid leaves. Deparia acrostichoides and Asian species such as D. pycnosora (H. Christ) M. Kato and D. allantodioides (Beddome) M. Kato are examples of vicariant species pairs with amphipacific disjunct distributions.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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