Thalline exciple

From LIAS Glossary
Jump to: navigation, search

thalline exciple (noun, pl. thalline exciples;ascocarp term; synonymous original Latinized form: sl. excipulum thallinum, pl. excipulae thallinae; alternatively: sl. amphithecium, pl. amphitheciae) – an anatomical term referring to an additional lateral layer surrounding an ascocarp, formed from thallus hyphae and photobiont cells; in apothecioid ascocarps forming a thalline margin, and in perithecioid ascocarps forming an involucrellum; generally with a similar structure as the surrounding thallus; ontogenetically derived not from the ascocarp itself but from the thallus; frequently but not always present in lichenized ascomycetes, absent from non-lichenized ascomycetes; if well-developed sometimes replacing (or at least diminishing) the proper exciple. Terms describing parts of the thalline exciple (amphithecium): cortical exciple, medullary exciple, amphithecial cortex. Related terms: proper exciple, lecanorine, involucrellum. This is:part of ascocarp.

This page is part of the LIAS Glossary. It is closely interlinked with the other LIAS projects: LIASLIAS lightLIAS namesLIAS gtm. See also Cooperating Websites
Many pages in the LIAS Glossary is in need of further revisions. Please contribute. Criticism as well as collaboration is welcome!

Other Resources: Flora Australia Fungi, Lichens  •  Glossary at Mushroom  •  Cornell Pl. Path.  •  APS Pl. Path.: A-D E-H I-M N-R S-V W-Z.
Direct search for topic name: Google   Yahoo   Merriam-Webster Online   Leo German-English   Wikipedia: en de fr es it   Wiktionary: en de fr es it