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A group of spores arranged without order and covered with a thin gelatinous envelope, as in certain delicate red algæ.

ots. It has a distinct volva at the base, generally an upper ring on the stalk, and white spores. Called also fly agaric, deadly amanita.

The collective organs by which a plant produces its fruit, or seeds, or reproductive spores.

The spore cases or conceptacles of flowerless plants, as of ferns, mosses, algae, etc., with the spores contained in them.

rly, belonging to an order of alga: (Fucoideæ) which are blackish in color, and produce oöspores which are not fertilized until they have escaped from the conceptacle. The common rockweeds and the gulfweed (Sargassum) are fucoid in character.

the similar sex cells of the lower thallophytes which unite by conjugation, forming a zygospore. The gametes of higher plants are of two sorts, sperm (male) and egg (female); their union is called fertilization, and the resulting zygote an oöspore. In Zoöl., gamete is most commonly used of the sexual cells of certain P…

An order of fungi, in which the spores are borne inside a sac called the peridium, as in the puffballs.

A bud spore; one of the small spores or buds in the reproduction of certain Protozoa, which separate one at a time from the parent cell.

One of the reproductive spores of algæ.

iberty. Disease germ (Biol.), a name applied to certain tiny bacterial organisms or their spores, such as Anthrax bacillus and the Micrococcus of fowl cholera, which have been demonstrated to be the cause of certain diseases. See Germ theory (bellow). -- Germ cell (Biol.), the germ, egg, spore, or cell from which the…

minute spherical or rounded structure; as blood, lymph, and pus corpuscles, minute fungi, spores, etc.

Producing two kinds of spores unlike each other.

The spore-bearing surface of certain fungi, as that on the gills of a mushroom.

One of the great division of fungi, containing those species which have naked spores borne on free or only fasciculate threads. M. J. Berkley.

changed, after a period of drought or deficiency of food. In some instances, a process of spore formation seems to occur within such cysts.

isease and the attack resulting from it; the time of development of the supposed germs or spores.

Producing but one kind of spore, as the ferns and Equiseta. Cf. Heterosporic.

Producing but one kind of spore, as the ferns.

variously branched. They derive their nourishment from the air, and generate by means of spores. The species are very widely distributed, and form irregular spots or patches, usually of a greenish or yellowish color, upon rocks, trees, and various bodies, to which they adhere with great tenacity. They are often improp…

The cover of the spore cases of mosses.