286 



. Pertusaria lutescens Krplh. Siidsee Ins, p. 11, sporae costu- 

 latae; in Australia orientali prope Rockhampton: Thozet, in 

 insula Socotra: Dr. Schweinf., prope Rio de Janeiro: Glaziou 

 (sine no.), prope Bahiam: Martius (in hb. Mom), et in insula 

 Cuba: C. Wright 11/158. 



§. 5, Depressae. Verrucae fructigerae hemisphaericae, apice 

 demum depresso-concavae, in depressione confertim v. subcon- 

 fluentim ostioligerae. 



a. Flavicanies. 



726. Pertusaria xanthodes Mtill, Arg,; thallus cum verrucis 

 flavus, nonnihil albicans, crassiusculus, rugulosus, margine ab- 

 rupte effusus; verrucae densiusculae, 1 mm. latae, hemisphae- 

 ricae, basi sublimitatae, vertice latiuscule depresso-concavae, 

 ambitu gibboso-subirregulares, in depressione pauciostiolatae; 

 ostiola exigua, hyalino-fuscidula, orbicularia, non emergen tia, 

 nee immersa; sporae .in ascis 2-nae (rarius et 3*nae), 90 — 105^ 

 longae, 33 — 37 ja latae, oblongato-ellipsoideae, diu laeves, de- 

 mum tamen obsolete costulatae. — Fere cum P. schizostoma 

 convenitj sed ostiola orbiculari-punctiformia, sporae multo mi- 

 nores et sublaeves et thallus minus intense flavidus. — Corti- 

 cola prope Dallas in Texas : J. Boll. 



Pertusaria schizostoma Mull. Arg. Diagn. Lich. Socotr. p. 5; 

 corticola in insula Socotra: Prof. Balfour. 



Pertusaria glebosa Mull. Arg. Lich. Beitr. nr. 501, sporae 

 intus laeves; in Australiae montibus Grampians : Sullivan n. 14, 



b, Albidae. 



727. Pertusaria cretacea Mull. Arg.; thallus cum verrucis 

 cretaceo-albus, subtenuis, ruguloso-inaequalis, demum parce 

 rimosus, margine snbeffusus, superficie subfarinaceus ; verrucae 

 1 mm. latae v. paullo majores, confertae, interdum confluentes 

 nano-hemisphaericae , subfarinosae , caeterum laeves et satis 

 regulares, vertice late obtuso v. paullo depresso nigro-ostiolatae; 

 ostiola pauca in maculam parvam nigram irregularem con- 

 fluentia, non emergentia; sporae in ascis 8-nae, biseriales, circ. 

 48—60 fi longae, intus laeves. — A P. rnelaleucoide praesertim 

 colore* cretaceo-albo partium et t ostiolis minus amplis non emer- 

 gentibus et dein sporis differt, — Corticola in Nova Zelandia: 

 Dr. Ch. Knight (sub P. leucodeoide pro parte). 



728. Pertusaria leucodeoides Mull. Arg,; thallus albidus v. 

 subflavescenti-aibus, tenuis, laevis, dein obsolete granuloso- 

 inaequalis; margine subeffusus, superficie cum verrucis minute 



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