Linked from
The 11 pages that link to Cloud genus, each with the reason it gives.
Altocumulus cloudNarrower topic: Altocumulus is one of the ten recognized cloud genera.
Altostratus undulatusNarrower topic: Altostratus identifies the genus to which this species belongs.
Cloud (meteorology)Narrower topic: Clouds are grouped into ten genera, such as cirrus and stratus.
Fractus cloudNarrower topic: Fractus is a supplementary feature, not a cloud genus.