194 



non insculptae. — Ad terram in Western Australia, propc 

 Kverard Range: Helms n, 35. 



23. Heppia acarosporoides Miill. Arg. ; squamae 

 nigrescenti-olivaeeae, ^/a — 1 mm latae, orbiculares, integrae 

 V. margine leviter undulato-crenatae, fertiles liemisphaericae, 



n)onocarpicap, in maigine adpressae, liaud insculptae; gonidia 



olivacea, modice composita; apothecia demum ^/s mm lata, 



rogularia, imraersa, uon prominentia thallina cincta; discus 

 nigro - fuscus, depressus , nudus; sporae in aseis numerosae, 

 4^/3 — 6 |U longae, globose ellipsoideae. - — Affinis //. austra- 

 liensi^ sed squamulae aliae. Ilabitu bene accedit ad Placo- 

 diuni castaneiim (K()rb.), sod gonidia sunt absolute alia. 

 Ad terram in Western Australia, Camp. 1; H. sine n*^. 



Trib. Placodieae- 



24. A m p h i 1 ni a m u r o r u m v. m i n i a t u m Kerb. 

 Syst. p. Ill; saxicola, Australia occid,, Camp. 17: Helms 



II. 74. 







V, obi itera turn Korb, Syst. p. Ill; saxicola^ 

 Frasers Range: H. n. -89. 



V. areo latum Miill. Arg.; thallus crebre sub- 

 areolatus, areolae periphericao hinc inde obsolete radiantes, 

 turgidae, subtiliter crebre veri'uculosae, ocliraceo-auran- 

 tiacae. — Sporae ut in specie. — Quasi forma obliterata 

 varietatis aurantiacac. — iSaxicoIa, in Australia occidentali: 

 Helms n. 71, 



25. Placodium fulg ens v. b raeteatum (Acb.) Miill. 

 Arg, Lich. Pers, n, 14; Austr, occid., Depot 1: H. sine n 



(vestigia stcr,). 



26. Placodium cervinum v. percaenum (Scbaer.) 



Miill. Arg. L. Pers. n. 23; calcicola, Frasers Hauge; H. 



n. 88; Camp. 17: 11. sine n^ 



27. Placodium citrinum Miill. Arg. L. B, n. 1414; 



Urceolaria citrina Tayl. in Hook. Journ. of Bot. 1847 p. 158; 

 Lecanora xanthopJuina Nyl. L. And. Boliv. p. 379; Lichen 



iti Australia occidentali sicciore vulgaris, at rarius bene 

 cvolutus, habitu, magnitudine squamularum et colore flaviore 

 ant magis virente eximie varians, cacterum ad saxa et ad 

 terram crescens; Everard Ranges: H. n. 25, 85 et in vicini- 

 tate variis bjcis: 11. n. 15, 65, 66, 94. 



Trib. Psoreae. 



28. Psora decipiens Iloffm. Lichenos. t, 43 

 lig. 1 — 3; Mass. Ric, p. 91; ad terram Everard Ranges: H. 

 (sine n^), Depot 1: H. n. 17; in Victoria Desert: H. n. 77. 



29. Psora psammophila Miill. Arg.; thalli squamae 

 ^ji — 2 mm latue, glaueo- virentos, mutua pressione demum 



