"Exannulate" is a word in ENGLISH
Having the sporangium destitute of a ring; -- said of
certain genera of ferns.
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A sporangium or conceptacle containing only large spores; -- opposed to microsporangium. Both are found in the genera Selaginella, Isoctes, …
Read the complete definitionA sporangium or conceptacle containing only very minute spores. Cf. Macrosporangium.
Read the complete definitionA slender support of any special organ, as that of a capsule in mosses, an air vesicle in algae, or …
Read the complete definitionAn elastic band partly or wholly encircling the spore cases of ferns. See Illust. of Sporangium.
Read the complete definitionof Sporangium
Read the complete definitionA spore case in the cryptogamous plants, as in ferns, etc.
Read the complete definitionA sporangium.
Read the complete definitionThe line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See …
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