Castellanus

This article is about the clouds. For persons see Petrus Castellanus .

Clouds : classification
Genera Cirrus Ci Cirrocumulus Cc Cirrostratus Cs Altocumulus Ac Altostratus As Stratocumulus Sc Stratus St. Cumulus Cu Nimbostratus Ns Cumulonimbus Cb	species calvus cal capillatus cap castellanus cas congestus con fibratus fib floccus flo fractus fra humilis hum lenticularis len mediocris med nebulosus neb spissatus spi stratiformis st uncinus unc volutus vol	Subspecies duplicatus you intortus in lacunosus la opacus op perlucidus pe radiatus ra translucidus tr undulatus un vertebratus ve Special forms arcus arc asperitas asp cauda cau cavum cav fluctus flu flumen flm incus inc mamma mam murus mur pannus pan pileus pil praecipitatio pra tuba tub velum vel virga vir

Stratocumulus castellanus (below)

Altocumulus castellanus seen on September 23, 2015 morning in Biertan (Biertan), Romania

Castellanus (cas) ( Latin for "concerning the castle") are clouds that have at least some swellings in the upper section in the form of turrets, which generally give the cloud a crenellated appearance. This species is applicable to the genera Cirrus , Cirrocumulus , Altocumulus and Stratocumulus . The turrets, some of which develop more upwards than in width, are connected to one another by a common base and often grow side by side out of the same cloud. The Castellanus character is particularly evident when the cloud is viewed from the side.