from The Century Dictionary.
- noun Plural of
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
Sorry, no etymologies found.
The lichen-thallus is composed of chains or groups of round chlorophyl-containing cells, called "gonidia," and masses of interwoven rows of elongated cells which constitute the hyphæ.
Zeospores; 2, 4, or multiciliated active automobile cells -- gonidia -- discharged from the mother cells or plants without impregnation, and germinating directly.
Fructification: the internal mass or contents separating into roundish or lenticular gonidia.
Under certain conditions single cells of the gonidia become surrounded with a dense felt of hyphæ, these accumulate in numbers below the surface of the thallus, until at last they break out, are blown or washed away, and start germination by ordinary cell division, and thus at once reproduce a fresh lichen-thallus.
Two or more gonidia may be supported upon each sterigma.
Although this has by no means been proved, yet I cannot help calling the attention of the members of this society to a fact which I think strongly bears out the said theory: While watching a gathering of _Vaucheria_ one morning when the plant was in the gonidia-forming condition (which is usually assumed a few hours after daybreak), I observed one filament, near the end of which a septum had formed precisely as in the case of ordinary filaments about to develop a spore.