(23) J. MULLER. LICHENES WILSONL^NI. o5 



marginata; disciis iiTegulariter orbicularis et irregularitPi- Dudatus, 

 nigricanti-fuscus, planus; epithecium fuscum ; hypothecium iiigro- 

 fuscum, crassum, subtus pallide coccineum ; paraphyses simplices; asci 

 l-seriatim 8-spori; sporse 12-14 y- longae, 7-8 ;'■ latœ, ellipsoideœ, 

 utrinque la te rotundato-obtusse, 2-loculares. — Subsimilis Birinœ 

 repandœ Fr., sed graciliox* et sporaü fusca?, divisione et aiiibitu alife. — 

 Genus Dirinastruni differt a D/rina sporis fuscis (ambitu latis). Reli- 

 qui characteres utriusque conveniunt et ambo a Lecanoreis structura 

 gonidiorum omniuo differuut. — Super saxa calcarea maritima ad 

 Waarnambool : Wilson, n. 735 (spécimen receptum eximie pauperum, 

 at characteres tarnen evidentes). 

 14o. Platygrapha Banksiae Müll. Arg. ; thallus argillaceo-cinereus, lenuis, 

 granoso-rugosus ; apothecia */5 mm. lata, creberrima saepeque mutua 

 pressione subangulosa, crassiuscula, sessilia, valide thallino-marginata ; 

 margo junior prominens, dein cum disco apicem apotheciorum leviter 

 convexum formans, semper integer; discus nigro-fuscus, grossiuscule 

 granuloso-ciuereus, demum nudatus ; epithecium diu thalliuo-tectura ; 

 hypothecium profunde nigro-fuscum ; paraphyses tenellse et irreguläres ; 

 asci 8-spori; spor* 20-25 y. longa\. absque halone interdum distincto 

 4-5 y- lata^, fusiformes, rectœ v. modice incurva:', 6-8-loculares. — 

 Prima fronte optime Dirinaiii Ceratonia' Fr. simulât, sed apothecia 

 leviter minora et sporae et paraphyses omnino aliœ. — Prope 

 PL cineream Müll. Arg., e Manipoor. inserenda est. — Ad corticem 

 Banksiœ serratœ, Chelteuham : Wilson, n. 364. 



146. Opegrapha lacteella Müll. Arg. ; thallus lacteo-albus, tenuissimus. con- 



tinuus et Isevigatus. demum irregulariter maculoso-evanescens ; lirella; 

 adpresso-sessiles, cire, ^"/loo""/"» i^'n^- l^-t*,- longitudine diametrum 

 semel-quater eequantes, atrae et opaca-, semicylindricfe ; labia arcte con- 

 niveutia; perithecium basi completum; epithecium nigro-fuscum; asci 

 oblongo-obovoidei, apice pachydermei, 8-spori: sporœ 12-14 // longœ, 

 3 72-4 // latae, utrinque obtusœ, 4-loculares. — Proxime affinis est 

 austro-americanse Op. atratulœ Müll. Arg., a qua recedit thallo lacteo, 

 lirellis brevioribus. madefactis discum non denudantibus et dein ascis 

 minus cylindricis, ascis pachydermeis et sporis obtusioribus. — Corti- 

 cola ad Warrnambool : Wilson, n. 845, ad Hejiield : Wilson, n. 894. 



147. Opegrapha Turneri Leight. Brit. Graph., p. 17, t. V, f. 10; ad corticem 



Bursariœ spinonce prope Grand Warrnambool : Wilson, n. 855 pr. p. 



148. Opegrapha sororiella Müll. Arg. Diagu. L. Socotr., p. 11; ad corticem 



Banksiœ serratœ prope Cunningham : Wilson, n. 862. 



149. Opegrapha varia v. diaphora Nyl. Scand., p. 253; corticola prope 



Sandringham ; Wilson, n. 899; ad truncos Banksiœ serrata' prope 

 Cheltenham : Wilson, n. 858 h, et dein ad saxa calcarea prope Warr- 

 nambool : Wilson, n. 849, 851, 861. 



