The lichen-flora of Great Britain, Ireland, and the Channel Islands / by W.A. Leighton.

  • Leighton, W. A. (William Allport), 1805-1889.
Date:
1879
Catalogue details

Licence: Public Domain Mark

Credit: The lichen-flora of Great Britain, Ireland, and the Channel Islands / by W.A. Leighton. Source: Wellcome Collection.

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    THE LICHEN-FLORA Apothecia prominent, with 2 or 4 longtitudinally parallel hymenia in each ; spores 8, simple. = Ptychographa. Apothecia red, rotundate or oblong, biatorine, plane, internally colourless ; spores 8, simple. = Agyrium. Apothecia black, tumid; hypothecium black, entire; spores 8 or numerous, simple or 1 -septate. = Lithographa. Apothecia black, superficial; perithecium black, entire ; spores 8, obovate or fusiform, 1-multiseptate ; paraphyses indistinct. = Opegrapha. Apothecia black, impressed in thalline verrucse and surrounded with a spurious thalline margin; hypothecium black; spores fusiform, 3-septate = Plattgrapha. Apothecia brownish, punctiform or elongate, immersed; hypo- thecium colourless. =Stigmatidium. Apothecia roundish, plane, or tumid, innately sessile ; asci pyri- form in excavations of the subgelatinous hymenium ; paraphyses none =Arthonia. Apothecia black, innate or immersed ; spores 8, oblong or lineari-elongate or cylindrical, pluri-locular; paraphyses distinct. =Graphis. Apothecia substellato-radiate, immersed in white rounded ver- rucse ; spores fusiform, 3-septate. = Chiodecton. Apothecia intricato-flexuose, immersed in white piano-depressed verruca). = Glyphis. Apothecia black, superficial, arthonoid ; spores 1-septate ; para- physes distinct. =Melaspilea. Tribe XVII. Peridiei. Apothecia containing many hymenia conjoined as in a common excipulum, but without perithecia.=My copoeum. Apothecia rotundate, depressed in the centre, dehiscing by a subradiate fissure. =Rimularia. Series VI. PYRENODEL Tribe XVIII. Pyrenocarpei. Apothecia single in citrine spheerical thalline verrucse; spores numerous. = Thelocarpon. Perithecia black, immersed in a squamulose thallus; spores 8. septate. = Normandina. Perithecia pale, immersed in a peltate or squameeform thallus; spores 8, simple. =Endocarpon. Perithecia black, rarely coloured, entire or dimidiate, semi- immersed or sessile ; spores 8 or numerous, simple or variously septate. = Verrucaria. Foliicolous. = Strigula. Perithecia numerous, minute, black, imbedded in a round or oblong blackish plane apothecium. = Melanotheca. Perithecia several, stellato-cougregate, their ostiola converging into one common central poriform epithecium. = Astrothelium.
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