BY JOHN SHIULEY, B.SC. 



209 



Cohort 0. Apothecia marginate ; spores parenchymatous. 



YJ. — Helmisthocakpox, Mull. Arg, 



Apothecia scattered ; paraphyses intricately eonnexo- 

 ramose ; spores hyaline. 



1. H. Lojkanuni, Mull. Arg. 



Thallus thin, ftavescent-cinereous, subrimulose, and obso- 

 letely verruculose J lirellse somewhat emergent, orbicular, 

 about *7 m.in., with equal diameters, margin tumid, wholly 

 girdled by the thallus and concolorous with it, simulating 

 a species' of Thelotrema, but occasionally 1 -5 — 2 m m. long 

 31. by '5 m.m. broad, straight, genuflexed or sigmoid, at both 

 ends obtuse ; disk punctiform-orbicular or according to 

 the form of the lirellae oblongate, caesio-pulveraceous, 

 depressed ; perithecium in section cupular, everywhere 

 thin and albo- hyaline, outwardly above covered with a 

 thick thalline stratum ; paraphyses trabeculate-connected; 

 asci 1-spored, spores -18 — -225 x -04 — .048 m.m., very 

 finely cubic-locellate, locelli in series 25 — 30, transversely 

 placed, and occasionally for the most part again divided. 

 Lich. Beit. v. Dr. J. M., XX\ r I. 26. 

 Hab. — Toowoomba, on bark. 



VII. — Trkmotylium, Mull. Arg. 

 Yerrucaj arranged in a sub-series simulating a Graphis ; 

 paraphyses parallel, trabeculately massed and coherent ; 

 spores hyaline 



1. T. australianum, Mull. Arg. 



Thallus ashy-pale, tartareus, thickish, continuous, smooth- 

 ish, in all parts closely verruciferous j vomicae 5 m.m., 

 many confluent in irregular aggregations, vertex depressed, 

 1 — 4 fruited, apices thelotremoid-aperient, somewhat de- 

 fossate, subcaesio-pallid ; disk punctiform, orbicular, c<Tsio- 

 M, velate ; apertures at length confluent in a series ; thala- 

 mium bordered from earliest stages by the pallid thallus, 

 slightly fuscescent, externally with spurious fuscescent 



