American Heritage® Dictionary of the English Language, Fourth Edition
- n. A disk-shaped or cup-shaped ascocarp of some lichens and the fungi Ascomycetes.
Century Dictionary and Cyclopedia
- n. In botany, the fruit of lichens, usually an open, rounded, shield- or dish-shaped body attached to the surface, as in gymnocarpous lichens, or globular and immersed in the substance of the thallus, as in the angiocarpous series of genera. An apothecium consists of an exciple and the included hymenium. The exciple is composed of a layer of cells (hypothecium) with or without an additional subhymenial layer. The hymenium consists of asci (otherwise thecæ or thekes), which are the sporebearing organs, usually intermingled with slender erect filaments (paraphyses).
GNU Webster's 1913
- n. (Bot.) The ascigerous fructification of lichens, forming masses of various shapes.
- n. a cuplike ascocarp in many lichens and ascomycetous fungi
- From Latin apothēca, storehouse; see apothecary. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Nylander called the apothecium pale within, but forms with red-brown hypothecia are admitted by later writers.”
“A portion of a section through an apothecium of _Peltigera canina_, showing part of the hymenium of interwoven hyphae below and the bases of three paraphyses above.”
“A vertical section through an apothecium of _Lecidea rupestris_: a, the hymenium, composed of asci and paraphyses; b, the hypothecium; c, the mycelium, the cells of the algal host, and particles of the limestone on which the plant was growing; d, the weak, light-colored, covered exciple.”
“No species showed any great luxuriance, and seldom did the black and white lichen-crust produce any 'apothecium,' The lichen-vegetation was most abundant on the driftwood of the beach and on the tufts in the marshes.”
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