The ordinary conjugation is formed quite differently.
The assertion of Areschoug that conjugation occurs among zoospores derived from unilocular sporangia, in the case of Dictyosiphon hippuroides, is no doubt to be ascribed to error of observation.
Thus among Volvocaceae, a family of Protococcales, while in some of the genera (Chloraster, Sphondylomorum) no sexual union has as yet been observed, in others (Pandorina, Chlorogonium, Stephanosphaera, Sphaerella) conjugation of similar gametes takes place, in others still (Phacotus, Eudorina, Volvox) the union is of the nature of fertilization.
In Schizosaccharomyces and Zygosaccharomyces, however, we have a fusion of nuclei in connexion with the conjugation of cells which precedes sporangium-formation.
That nuclear conjugation between cells ever takes place.
Further, most if not all forms of Sporozoa 'undergo sexual conjugation at some period or other of the life-cycle.
Some verbs originally belonging to the conjugation in e r e have, passed over into that in ir; for example t e n e r e gives lenir alongside of tindre, r e man e r e romanir and romandre.
Portuguese conjugation has more that is interesting.
Among the peculiarities of Portuguese conjugation may be rnentioned(1) the assimilation of the 3rd pers.
Antghi, aghi), has likewise served fur the forination not only of the past participle but also of the infinitive (agher, habere, can only be explained by ach, 3rd person of the perfect); the infinitives with r paragogic (viurer, seurer, plonrer) are not used (viure, seure, ploure ilistead); in the conjugation of the present of the verb essar or esser, the 2iid pers.