364 BOTANY OF SOCOTRA. 



2. P. flavens, Nyl. Enum. Lich. Husn. p. 12. 



Ostiola prinium sulphurea, non emersa et verrucas stictico-puncticulat* ut in specimine origi- 

 nali Husnotiano, n. 471. 



Socotra. B.C.S. n. 1410 joro parte. 

 Distrib. Madagascar, Guadeloupe. 



3. P. SChizostoma, Mull. Arg. in Proc. Eoy. Soc. Edin. xi. (1882), 461. 



Thallus albescenti-flavescens, mediocris, continuus, minute rugulosus, undique cum verrucis 

 minutissime ulcerato-puncticulatus, absque linea limitante. Verrucse fructiger* circ. 

 lj-li mm. latae, heniispb*ric*, superficie nonnihil gibboso-irregulares, vertice demum 

 depress*, circ. 5-7-carpic*, ostiola primum punctiformia, pallida, demum elliptica v. 

 oblongata saspeque circa centrum subcirculariter sita, in fundo pallida. Spor* in ascis 

 gemiuatse, 130-190 ft. long*, 56-80 n lata?, oblongato-ellipsoide*, demum valde pachy- 

 derme*. intus valide costulat*. 



Similis P.fiaxenti, Nyl., sed spor* in ascis non octon* et thallus minus intense flaveus et ostiola 

 demum alia. 



Socotra. Ramulicola. B.C.S. 1357 pro parte, 1361 pro parte. 

 Distrib. Endemic. 



4. P. subflavens, Mull. Arg. in Proc. Roy. Soc. Edin. xi. (1882), 461. 



Thallus sulphureo-flavus, tenuis, rugulosus v. subl*vis, margine subeffusus. Verrucas fructiger* 

 hemisph*ric*, s*pius sat regulares, mono-v. rarius dicarpic*, 1 mm. latae, superficie 

 obsolete ineequales, opac* ; ostiola haud emergentia, thallo subconcoloria, demum obscure 

 carnea; tbalamium pallidum. Asci subcylindrici.. 2-spori v. rarius 1-spori. Spor* super- 

 posit*, circ. 110-130 ^ long* et circ. 55 fi lata, solitari* autem usque ad 180 fj. longi- 

 tudiue attingentes at reliquis haud latiores. 



Extus Pertusariam flavemtem, Nyl. (Lich. Husn. p. 12) simulat, sed asci 2-spori sunt et verruc* 

 monocarpic*. Juxta Pertusariam lutescentem, Krplh. (Sud-See-Ins. p. 11) inserari potest, 

 a qua thallo intense flavo et verrucis 1-carpicis statim recedit. 



Socotra. Ad ramulos Hyperici supra Wadi Kischen, alt 1000 m. 

 Schweinf. 



Distrib. Endemic. 



5. P. lutescens, Krplh. Sud-See-Ins. p. 11. 



A Pertusaria cicatricosa, Mull. Arg. thallo flavescenti, verrucis minoribus magisque regularibus 

 sub lente recognoscenda. 



Socotra. Cum Pertusaria cicatricosa, Mull. Arg. in ramulis et ramis 

 llihamodendri supra Wadi Digal, alt. 300 m. mixtim crescens. Schweinf. 

 Distrib. Hayti and Brazil. 



