Two of its tetraspores (spores in fours), highly magnified.
Small plant of Chondrus crispus, or Carrageen Moss, reduced in size, in fruit; the spots represent the fructification, consisting of numerous tetraspores in bunches in the substance of the plant.
Tetraspores are at first naked, but soon acquire a cell-wall and germinate without a period of rest.
Nemalion is, however, one of those Florideae in which tetrasporesdo not occur.
Novel as this result may seem, the tetraspores of Florideae become hereby comparable with the tetraspores of Dictyota, to which reference will be made hereafter.
But it is clear that it becomes on this view increasingly difficult to explain the occasional occurrence of tetraspores on male, female and monoecious plants or the role of the carpospores in the life-cycle of Florideae.
The asexual cells are termedtetraspores on account of the usual occurrence of four in each sporangium.
In the species under consideration the mother cell of the tetraspores arises as a small bud near the upper end of one of the ordinary cells (Fig.
The tetraspores are often imbedded in the tissues of the plant, or may be in special receptacles, nor are they always arranged in the same way as here described, and the same is true of the carpospores.
Tetraspores also occur in the cells of the surface of the filaments.
The tetraspores are in clusters which are scattered over the frond or on its leaflets.
The spores are contained in external tubercles, and the tetraspores are arranged in masses beneath the surface.
The spores are contained in globular stalked conceptacles, usually on one side of the midrib; and the tetraspores may be seen in pod-like leaflets attached to the bare midrib during the winter.
The spores are pear-shaped, in oval cells; and the tetraspores are irregularly distributed near the tips of the branches.
The tetraspores form crimson patches on the tips of the lobes.
The tetraspores are either distributed among the surface cells, collected in clusters, or situated in special leaflets.
The spore-conceptacles are tapering, on short stalks, and the tetraspores are contained in pointed pods on the branchlets.
The fronds arise from a disc-like root; and bear spores in thickly-clustered spherical conceptacles, and tetraspores in lanceolate pods at the tips of the branches, both in the winter.
Tetraspores in distorted branchlets or in receptacles.
The spore-clusters are grouped together, several being enclosed in a membranous cell in conceptacles, or external sacs, at the ends of the branchlets; and the tetraspores are arranged singly along the jointed branchlets.
The tetraspores are similarly situated in stalked, lanceolate leaflets.
The tetraspores occur singly, one at the top of each of the lower joints of the pinnules of the plumes.
The spores are embedded in the smallest branches, and the tetraspores are arranged among the superficial cells.
The spores are contained in conceptacles near the extremities of the branchlets, and the tetraspores are imbedded in club-shaped branchlets.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "tetraspores" in a variety of sentences. We hope that you will now be able to make sentences using this word.
