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inute jointed filament growing among the archegonia and antheridia of mosses, or with the spore cases, etc., of other flowerless plants.

The influence of light on the movements of low organisms, as various infusorians, the zoöspores of certain algæ, etc.; also, the tendency to follow definite directions of motion or assume definite positions under such influence. If the migration is toward the source of light, it is termed positive phototaxis; if away f…

A gelatin in which the algæ spores have been supposed to vegetate.

uits. Plurilocular sporangia (Bot.), many-celled sporangia, each cell containing a single spore, as in many algæ.

Containing many spores.

The primary growth from the spore in certain cryptogamous plants; as, the proembryo, or protonema, of mosses.

The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oöphoric generation of ferns, etc.

The primary growth from the spore of a moss, usually consisting of branching confervoid filaments, on any part of which stem and leaf buds may be developed.

haped fungus (Lycoperdon giganteum, and other species of the same genus) full of dustlike spores when ripe; -- called also bullfist, bullfice, puckfist, puff, and puffin.

In certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

ith a cluster of elongated four-tubed rushlike leaves, rising from a corm, and containing spores in their enlarged and excavated bases. There are about seventeen American species, usually growing in the mud under still, shallow water. So called from the shape of the shape of the leaves.

otrychium Virginianum) having a triangular decompound frond and a long-stalked panicle of spore cases rising from the middle of the frond. -- Rattlesnake grass (Bot.), a handsome American grass (Glyceria Canadensis) with an ample panicle of rather large ovate spikelets, each one composed of imbricated parts and slight…

a. & n. from Rest, v. t. & i. Resting spore (Bot.), a spore in certain orders of algæ, which remains quiescent, retaining its vitality, for long periods of time. C. E. Bessey.

Any seaweed with red spores.

An elastic band partly or wholly encircling the spore cases of ferns. See Illust. of Sporangium.

orm or condition of the corn mildew (Puccinia graminis). As rust, it has solitary reddish spores; as corn mildew, the spores are double and blackish.

A genus of cryptogamous plants resembling Lycopodia, but producing two kinds of spores; also, any plant of this genus. Many species are cultivated in conservatories.

Same as Spermospore.

porous; fertilization of the egg cell is either through a pollen tube emitted by the microspore or (in a few gymnosperms) by spermatozoids. The phrase "flowering plants" is less distinctive than "seed plants," since the conifers, grasses, sedges, oaks, etc., do not produce flowers in the popular sense. For this reason…

One of the cells formed by the diivision of the spermospore, each of which is destined to become a spermatozoid; a spermatocyte; a spermatoblast.