If
genera are different and co-ordinate, their differentiae are themselves different in kind.
Gay [2] has stated that he found in the neighbourhood of Rio, shells of the marine
genera solen and mytilus, and fresh water ampullariae, living together in brackish water.
How do those groups of species, which constitute what are called distinct genera, and which differ from each other more than do the species of the same genus, arise?
As species of the same genus have usually, though by no means invariably, some similarity in habits and constitution, and always in structure, the struggle will generally be more severe between species of the same genus, when they come into competition with each other, than between species of distinct genera. We see this in the recent extension over parts of the United States of one species of swallow having caused the decrease of another species.
The middle part is characterized by shallow shelfal waters with moderate circulation and
genera which indicate an open lagoon, lagoonal channel and subtidal environments.
Creating three (new)
genera (the Atlantic clade of Crassostrea, Magallana, and Talonostrea) is not the preferred solution to this problem of paraphyly.
There are a number of orchid
genera, Aporodes, Aporum, and Oxystophyllum, in which the plants are most unlike those of typical orchids, because of the flattened stems and triangular to acutely pointed, laterally flattened leaves.
Microbial analysis of Indian flying fox, Pteropus giganteus ejecta roosting at Jinnah and Lalazar Gardens, Lahore was carried out from January, through December, 2011 and a total of twelve fungal and twelve bacterial
genera were isolated.
Originally, the vernacular tenu "bunyavirus" was used for viruses in this genus, but as more
genera were added to Bunyaviridae (there are currently 5), confusion arose over whether "bunyavirus" referred to members of the genus Bunyavirus or family Bunyaviridae.
The family of freshwater fish Callanthiidae contains two
genera, say Anderson, Johnson, and Baldwin: the genus Callanathias with seven species and the genus Grammatonotus with six nominal species.
21 September 2015 - UK-based veterinary pharmaceuticals specialist Dechra Pharmaceuticals Plc has launched its takeover offer to acquire the shares in
Genera d.d.
M2 EQUITYBITES-September 21, 2015-Dechra Pharmaceuticals Launches Takeover Bid for
Genera