. Genera lichenum [microform] : an arrangement of the North American lichens. Lichens; Lichens. • I (I m L I. (2U) r's description of tho spores of ^C. scriolr, from Acharius's sj)ociinoii (Nyl. in Vrodr. Fl. N. GritH. p. 110, n.) varies in iinportiint rospocts from tliiit sjivcn by F«'"o {Sitppl. p. 50, t. 40) and iul(lsanotli(>r to tho already noted intorostin;^ featnres of tins lichen.' Cuban sp(!cimcn3, collected by ]S[r. Wri^^ht, and affreeinjjf entirely with Nylander's plant in Lindit^'s collection (llnrl). N. Gran. coll. 2, n. .'J3) ofter (iblon,<,^-ovoid, or more rarely oblo
. Genera lichenum [microform] : an arrangement of the North American lichens. Lichens; Lichens. • I (I m L I. (2U) r's description of tho spores of ^C. scriolr, from Acharius's sj)ociinoii (Nyl. in Vrodr. Fl. N. GritH. p. 110, n.) varies in iinportiint rospocts from tliiit sjivcn by F«'"o {Sitppl. p. 50, t. 40) and iul(lsanotli(>r to tho already noted intorostin;^ featnres of tins lichen.' Cuban sp(!cimcn3, collected by ]S[r. Wri^^ht, and affreeinjjf entirely with Nylander's plant in Lindit^'s collection (llnrl). N. Gran. coll. 2, n. .'J3) ofter (iblon,<,^-ovoid, or more rarely oblonix, (luadrilocular spores, without tho colour, but with the spore-cells of Glfipliis l(ii)ifrinthica, and of the erucrc- forni type; tjf which tho spores of tho species last named aro a reiluced expression. Nor is this apparent di\erlc with Operjrapha, as regards tho predominant typo expressed in its spores, it is comparablo with it also in its anomalies. * Twenty-threo species of this genus are reckoned in tho various publi- cations of Dr. Nylauder; and, adding C. iimhratmn, Fee, and G. Mon- tdf/HfCi, the number of distinguishable forms may bo called twenty-fivo. Two of tlu'se belong to tho European Flora; one of them being found on rocks at Cherbourg in Normandy, and tho other on shrubs in tho islands of Hyeres (near Toulon) and on rocks in the Channel Islands, and Ireland ; and throe are natives of Chili. All the rest aro intcr-tropical; two of them reaching however within our southern limits. ' Massaloiigo {Itic. p. 149) had already inaile the same ohservation oa tho spores of this speeios, which ho inclined thou to refer to Artliotiid. • These anomalies have been excluded, iu the case of OpcijrapJin, by many writers {Enccidudoyrapha, Massal. Lccidwc sp., Xyl. Stictoi/rapiia, Mudd) and this is one of the possible solutions of the question in which spore-series to place the genus. But tho distinction of the divergent Opcf/rap1in\ by colour alone, is by no means so easy
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectlichens, bookyear1872
