Arachnoid (botany)
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Arachnoid as a descriptive term in botany, refers to organs such as leaves or stems that have an external appearance similar to
cobweb A spider web, spiderweb, spider's web, or cobweb (from the archaic word '' coppe'', meaning "spider") is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally meant to catch its prey. Spi ...
s from being covered with fine white hairs, usually tangled. Such material is one common cause of plants having a grey or white appearance.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 The usages of various authors in distinguishing between "arachnoid" and a few other terms referring to hairiness, such as
floccose {{Short pages monitor