indusium
noun
any of several structures having a netlike or skirtlike shape, as the membranous overgrowth covering the sori in ferns.
indusia
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pluralof indusium.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It is one of our handsomest evergreen ferns and even the large sori, with their dark spore cases and white indusia, are very attractive.
From The Fern Lover's Companion A Guide for the Northeastern States and Canada by George Henry Tilton
Although the genus Polýstichum represents the true shield ferns, the wood ferns are also thus designated, as their indusia have nearly the shape of small, roundish shields.
From The Fern Lover's Companion A Guide for the Northeastern States and Canada by George Henry Tilton
Sporangia near or on the margin of the segments, the reflexed portions of which serve as indusia.
From The Fern Lover's Companion A Guide for the Northeastern States and Canada by George Henry Tilton
Sporangia borne on elevated receptacles, forming roundish sori imperfectly covered by very delicate hood-shaped indusia attached to the base of the receptacles.
From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray
Pinnules toothed or entire nearly covered beneath with the large, thin, imbricated indusia which are orbicular with a narrow sinus, having the margins ragged and sparingly glanduliferous.
From The Fern Lover's Companion A Guide for the Northeastern States and Canada by George Henry Tilton
