indusium

How To Use indusium In A Sentence

• The contraction and imperfect development of the fronds of some varieties of ferns, hence called depauperated, may receive passing notice, as also the cases in which the sori or clusters of spore cases are denuded of their usual covering, owing to the abortion or imperfect development of the indusium, as in what are termed exindusiate varieties. [ Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
• Indusium fixed by its outer margin to a veinlet and opening on the inner side. The Fern Lover's Companion A Guide for the Northeastern States and Canada
• Indusium hidden beneath the sporangia, consisting mostly of a few hair-like divisions. The Fern Lover's Companion A Guide for the Northeastern States and Canada
• Indusium straight or rarely curved, fixed lengthwise on the upper side of a fertile veinlet, opening toward the midrib. The Fern Lover's Companion A Guide for the Northeastern States and Canada
• Indusium hood-shaped, fixed centrally behind the sorus and arching over it, soon withering, often illusive. The Fern Lover's Companion A Guide for the Northeastern States and Canada
• That the indusium is a _special_ organ, i.e. not an eruption of the cuticle, I am sure; hence it is essential to examine extensively both indusiate and other forms, the precise extension of their veins, etc. at an early period to ascertain if their most diversified situations cannot be reduced to some one type. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries
• Two pairs of medial and lateral longitudinal striae of white matter are embedded within the gray matter of the indusium, creating four fine ridges.
• As the fornix passes beneath the corpus callosum it receives fibers from the longitudinal striæ of the indusium and from the cingulum; these are the perforating fibers of the fornix which pass through the corpus callosum and course in the fornix toward the mammillary body. IX. Neurology. 4e. Composition and Central Connections of the Spinal Nerves
• The upper surface of the intermediate portion of the corpus callosum is covered by a thin veil of gray substance - the indusium griseum.
• Ovular characters determine the grouping in the Dicotyledons, van Tieghem supporting the view that the integument, the outer if there be two, is the lamina of a leaf of which the funicle is the petiole, whilst the nucellus is an outgrowth of this leaf, and the inner integument, if present, an indusium. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1