American Heritage® Dictionary of the English Language, Fourth Edition
- n. The spore-bearing layer of the fruiting body of certain fungi, containing asci or basidia.
Century Dictionary and Cyclopedia
- n. In botany, the fructifying surface in fungi, especially when the spores are naked. It is an aggregation of spore mother-cells, with or without sterile cells, in a continuous stratum or layer npon a sporophore. In the common mushroom, Agaricus, for example, the hymenium or spore-bearing surface is naked or exposed, and spread over the gills, covering them on all sides with a delicate membrane, upon which the reproductive organs are developed. Also called
hymenial layer. See cuts under apothevium, ascus, and Fungi.
GNU Webster's 1913
- n. (Bot.) The spore-bearing surface of certain fungi, as that on the gills of a mushroom.
- n. spore-bearing layer of cells in certain fungi containing asci or basidia
- Ancient Greek ὑμενίων (humeniōn), diminutive of ὑμήν (humēn, "membrane"). (Wiktionary)
- New Latin, from Greek humenion, diminutive of humēn, membrane; see hymen. (American Heritage® Dictionary of the English Language, Fourth Edition)
“The cap of a basidiomycete, an expanded structure at the top of the stipe that bears the hymenium (gills, etc.) on its undersurface.”
“It is called from the prickly appearance of the under surface, or _hymenium_, the hedgehog mushroom”
“Every mushroom has a spore-bearing layer of cells, which is called the hymenium.”
“The substance proceeding from and of like nature with the part that bears the hymenium -- the framework of the gills.”
“This hymenium is composed of a number of swollen, club-shaped cells, called basidia, and close to them, side by side, are sterile, elongated cells, named paraphyses.”
“Thallus commonly granulose, and often passing into verrucose and chinky conditions, but scarcely ever areolate, sometimes scant and evanescent; apothecia usually minute or small, and commonly adnate, exciple weak and often becoming covered; hypothecium and hymenium passing from pale through shades of brown, the former becoming darker than the latter, this rarely tinged blue or violet above; spores hyaline, 2-celled.”
“Thallus light colored, usually thin and smooth, rarely disappearing; apothecia minute to middle-sized, 0.2 to 1 mm. in diameter, adnate scattered or crowded, flat or slightly convex, the disk pruinose, and the exciple persistent; hypothecium lighter or darker brown; hymenium usually pale; paraphyses coherent and becoming indistinct; asci cylindrico-clavate; spores oblong-ellipsoid, 3 to 5 mic. long and 1 to”
“Thallus usually verrucose, areolate or subareolate, tending toward squamulose conditions, better developed than in other members of the family, scarcely ever showing granulate conditions, and never disappearing entirely; apothecia also larger than in the other genera, adnate to immersed, usually black, but rarely white-pruinose; hypothecium usually dark brown; hymenium pale to light brown; spores”
“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.”
“Thallus granulose to verrucose and subareolate, sometimes inconspicuous and evanescent; apothecia minute to middle-sized, adnate or more or less immersed, exciple usually prominent and persistent, but sometimes becoming covered, disk flat to convex; hypothecium and hymenium pale to brown; spores simple, hyaline, minute, numerous in each ascus.”
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