a. Bot. [f. ACROSTIC(H + -OID.] Resembling the commencement of lines of poetry; an epithet of the genus of ferns Acrostichum, N.O. Polypodiaceae, so called from the peculiar distribution of the sori on the back of the fronds.
1882. T. More, in Gardeners Chron., No. 438, XVII. 672. The decurrent base, with light brown spore-cases, forming the usual universal acrostichoid fructification.
