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An opening at either end of the embryonic neural canal.

A name for certain crustaceous marine algæ which secrete carbonate of lime on their surface, and were formerly thought to be of animal nature. They are now considered corallines of the genera Melobesia and Lithothamnion.

Comprehending or including all bodies; embracing all substance. [R.] Cudworth.

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

See Palempore.

A superior kind of dimity made in India, -- used for bed coverings. [Written also palampore, palampoor, etc.] De Colange.

The outer covering of a spore.

A brownish zoöspore, characteristic of an order (Phæosporeæ) of dark green or olive-colored algæ. -- Phæ`o*spor"ic, a.

A peculiar reproductive cell found in some fungi.

Any one of several species of bryozoans of the genus Retepora. They form delicate calcareous corals, usually composed of thin fenestrated fronds.

One of several spores arranged in a chain as in certain algæ of the genus Callithamnion.

Same as Spermospore.

king up of which the spermoblasts are formed and ultimately the spermatozoids; a spermatospore. Balfour.

One of the nonsexual spores found in red algæ; a tetraspore.

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

minute, motile, reproductive bodies, produced asexually by certain algæ and fungi; a zoöspore.

The thick-celled winter or resting spore of the rusts (order Uredinales), produced in late summer. See Illust. of Uredospore.

A nonsexual spore, one of a group of four regularly occurring in red seaweeds. -- Tet`ra*spor"ic, a.

Any species of the genus Tubipora.

Any one of numerous species of Bryozoa belonging to Tubulipora and allied genera, having tubular calcareous calicles.