Perlucidus

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

Perlucidus ( Latin for "transparent"; abbreviation : pe ) are clouds in extensive patches, fields or layers with clearly defined, but only very small gaps between the individual cloud parts. Through these gaps, the sun, the moon, the blue sky or the clouds above are clearly visible. This subspecies can be observed at the same time as the translucidus or opacus subspecies .

This name is used for Altocumulus and Stratocumulus .

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  Altocumuls stratiformis perlucidus: The sky is clearly visible through small gaps.