spisstaus clouds are the densest cirrus clouds you'll see. They're even able to hide the sun if they're dense enough. 4. Castellanus. This species of cloud appears in cirrus, cirrocumulus ...

But, strictly speaking, cumulus castellanus isn't actually a thing. Specific types of cumulus and cirrus clouds can be of the castellanus variety, and these feature several chunks of clouds ...

Cirrus clouds are short, detached ... more cotton wool-like appearance than the rest of the cirrus family Cirrus castellanus - More vertically developed than cirrus floccus, cirrus castellanus ...

Castellanus: A cloud species of which at least a portion of its upper part presents vertically developed protuberances, usually taller than they are wide, that give the cloud a turreted appearance.

Clouds are grouped by their shape, using Latin words. Most fall into one of three groupings: cirrus (pronounced SEAR-us, the Latin word for a curl of hair), stratus (STRAIGHT-us or STRAT-us ...