390 BOTANY OF SOCOTRA. 



lata, basi autem in sectione x % mm. lata ; liypothecium tenue et fuscescens v. hyalinum ; 

 paraphyses tenues, laxse et laxe clathratim ramosse ; spor?e in ascis 2-3-8-nae, hyalinae, 

 absque halone lato circ. 25 p longae et 4-10 /x latae, evolutse transversim 4-5-septatae, 

 loculi 1-3-locellati. 

 Simile Trypethelio fusco, Krplh. Lich. Warm. p. 398, nulli cognitorum nisi B. subdiscreto, s. 

 Trypcthelio subdiscreto, Nyl. Lich. Kurz. Bengal, n. 22 affine est, a quo perithecio dimidiato 

 et sporis subduplo minoribus differt. 



Socotra. B.C.S. nn. 1357, 1467 (hsec sine sporis, caeterum congrua). Ad 

 ramulos supra Wadi Kischen, Alt. 700 m. Schweinf. 

 Distkib. Endemic. 



2. B. velatum, Mull. Arg. in Proc. Roy. Soc. Edin. xi. (1882), 472. 



Thallus vix nisi hyphemoideus circa perithecia; gonidia evoluta deficientia (saltern non obser- 

 vata); stromata suborbicularia, 1^-2 mm. lata, depresso-hemisphserica, circumcirca effusa, 

 cortice obscurato v. cinerascente tecto-velata, 1-10-carpica ; perithecia immersa, dimidiata, 

 basi lateraliter inflexa caeterumque ibidem basi nulla, olivaceo-fuscescentia, primum longi- 

 colla, dein e cortice erumpentia et superficiem verrucarum attingentia aut illas paullo 

 superantia, ostiolum albo-pulverulentum, demum nudatum et atrum, minutulum ; lamina 

 undique cum hypothecio hyalina v. hypothecium basi angustissime olivaceum ; paraphyses 

 eonnexse ; asci oblongo-obovoidei, 1-8-spori ; sporse semper hyalinse, 25-38 /x longse, 10-16 

 ix lata?, locelli in seribus 6-8 transversis 2 v. saapius 3. — Paraphyses contextum laxum at 

 satis firmum tenacem proebent in quo nidulantur asci. 



Ob defectum gonidiorum in statu fructigero observato facile ad Fungos relegandum, at inicro- 

 gonidia in paraphysibus et sporis adsunt sed minus facile observanda sunt. 



Affine est dissimili B. paujperrimo. 



Socotra. Corticolum ad ramos majores. B.C.S. nn. 1330, 1354, 1381, 

 1410. 



Distrib. Endemic 



PYRENOMYCETES. 



By Dr M. C. COOKE. 



SPELERIACEI. 



1. SPH^ERIA. 



tiphceria, Haller (1768), Helv. iii., Fries. Syst. Myc. ii. 319. 



A very large genus, recently subdivided into numerous smaller ones with 

 little more than subgeneric value. Largely distributed throughout temperate 

 countries but comparatively scarce in the tropics. 



