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certain organisms, and by germination giving rise to a new organism; as, the reproductive spores of bacteria, etc.

A spore borne at the extremity of the cells of fructification in fungi.

A spore of some algæ, which has male functions.

A sexual spore in which the sexes differ in size; -- opposed to isospore.

A bacterial resting cell, -- formerly considered a spore, but now known to occur even in endosporous bacteria. -- Ar`thro*spor"ic (#), Ar*thros"po*rous (#), a.

One of the spores contained in the asci of lichens and fungi. [See Illust. of Ascus.]

A spore borne by a basidium. -- Ba*sid`i*o*spor"ous (, a.

One of several spores growing in a series or chain, and produced by one of the fungi called brand.

A kind of spore formed in the conceptacles of red algæ. -- Car`po*spor"ic (, a.

A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe.

The thin inner coat of certain spores.

The thickish outer coat of certain spores.

The extreme outer wall of a spore; the epispore.

One of the spores produced by an isosporous organism.

One of the specially large spores of certain flowerless plants, as Selaginella, etc.

A large motile spore having four vibratile cilia; -- found in certain green algæ.

One of the exceedingly minute spores found in certain flowerless plants, as Selaginella and Isoetes, which bear two kinds of spores, one very much smaller than the other. Cf. Macrospore.

A small motile spore furnished with two vibratile cilia, found in certain green algæ.

A special kind of spore resulting from the fertilization of an oösphere by antherozoids.

The outer covering of a spore.