Reproductive Structures - Lichen website - ANBG
Another type of fungal fruiting body is a perithecium which, to the naked eye, looks like a small, hemispherical pimple, typically black and varying in diameter from under a millimetre to about two millimetres. Depending on the species perithecia may develop totally on the lichen thallus or embedded in the thallus.
» Perithecia Lichens of The Evergreen State College
Perithecia (s. perithecium) are spore-containing structures of a lichen. They are usually immersed in the thallus surface, and appear as black dots on the surface of the lichen. Perithecia differ from other spore-containing structures by being almost entirely enclosed except for a small opening through which the spores exit–the ostiole.
Lichen Basics - North American Mycological Association
When a lichen reproduces sexually, it is the fungal component that makes structures called apothecia or perithecia. Apothecia look like cups or discs on the surface of the thallus. Perithecia are flask shaped structures mostly embedded in the thallus.
Handbook of Lichenology – International Association for …
It provides user-friendly descriptions, labelled illustrations, and high-resolution photographs of lichen species that illustrate the trait. The handbook addresses the complexity and variability of lichens in a variety of habitats and eco-geographical regions.
Pyrenula hibernica - The British Lichen Society
A very rare species of temperate rainforest found in a few very sheltered, moist woods, often in ravines but also on more open slopes, especially in Ireland. Pyrenula dermatodes also has sunken perithecia, but the perithecia are arranged signally and the UV fluorescence is …
Few know that tropical lichen diversity surpasses that of temperate areas, and that lichens play an important role in tropical rainforest ecology, being involved in water and nutrient cycling. Foliicolous lichens, which grow on the surface of living
Irish Lichens 37: 1-59. IntroductionThis volume of Revisions of British and Irish Lichens brings together a number of genera of predominantly corticolous perithecial lichens (mostly with fissitunicate asci) associated with green algae and with exciple and/or involucrellum.
3.5.2: Types of Ascocarps - Biology LibreTexts
Fruiting bodies formed by sexual reproduction in Ascomycota are called ascocarps. There are three main types: apothecium, perithecium, and cleistothecium.
Identifying Lichens - Indian Institute of Science
The lichen thallus usually bears cup like structures called apothecia (Fig. 8), or bulged, globular or immersed pitcher like structures called perithecia (Fig. 9) as sexual reproductive organs. The finger-like projections called isidia (Fig. 10) or granular, powder-like structures called soredia (Fig. 11) are common vegetative organs.
apothecia and perithecia - Schneider - ANBG Lichen website
Apothecia and perithecia contain asci as well as sterile fungal hyphae (called paraphyses) growing between the asci. 1. Apothecium of Umbilicaria pustulata, showing two asci, each containing one large spore. 2. Two perithecia of Trypethelium virens. The very rudimentary thallus develops within bark, as do the perithecia.
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