Stirton. — On Australian and Neiu Zealand Lichens. 



water for some time, and are accordingly nearly unavailable 

 for diagnosis. 



As the spores in Miiller's specimen are almost unique (as 

 regards the genus) in their internal organization, I prefer to 

 describe this lichen apart, more especially as I have already 

 described another (Trans. Eoy. Soc. Victoria, 1880) from 

 Queensland, sent by Mr. F. M. Bailey, under the name Par- 

 mosticta rubrina. The thallus of Mr. Bailey's lichen has also 

 characters analogous to those of St. rubella, but has spores of 

 quite a different construction from those of Baron Miiller's 

 specimen. There are short vpbite hairs on the margin and 

 neighbouring upper surface of the lacinise, as described by 

 Nylander, I.e., and otherwise the characters are not dissimilar. 



Parmosticta purpurascens, Strn. 



Apothecia rufa marginalia, elevata, cupuliformia, magna 

 (latit. 4-8 mm.), receptaculum thallinum extus rubricosum, 

 vix rugulosum, interdum Iseve, supra, late citrino-sorediosum, 

 inflexum ; sporae 4-8n8e, fuscae vel fusco-rufae, oblongo- 

 ellipsoideae vel obtuse fusiformes, 4-loculares (loculis sub- 

 quadratis et inter se tubulo junctis), interdum etiam 3-septatae, 

 0-028-0-03 X 0-01-0-013 mm. ; paraphyses distinctse. lodo g.h. 

 bene caerulescens. 



The extremities of the spores are often nearly colourless 

 and almost papilliform. There appear to be two kinds of 

 gonidia; one kind uniformly small, 0-005-0-009mm. diam. ; 

 the other large, 0-012-0-028mm. diam., with yellow granular 

 contents. 



Sticta lorifera, Strn. 



Similis St. ivvpressce, Tayl., et similiter laciniata sed 

 supra cephalodiis numerosis, pallidis, fere giobosis adspersa ; 

 medulla alba vel pallida, K flavens ; subtus nigricans, versus 

 marginem pallidior, dense et breviter nigro-rhizinosa et pseudo- 

 cyphellis parvis pallidis vel interdum albido-flavis ; apothecia 

 nigra primum marginata dein immarginata, plana, marginalia, 

 receptaculo extus rugoso vel papilloso-aspero. Gonidia diam., 

 0-008- 0-016 mm. New Zealand, prope Wellington (/. Bu- 

 chanan) . 



This lichen is included under what Nylander calls " St. 

 physciospora," but which I hold should be called " St. im- 

 pressa, Tayl." The spores are fuscous, shortly polari-bilocular, 

 rarely 4-locular, and 0-022-0-028 x 0008-0-01 mm. The 

 thallus is divided almost to the base into long, narrow, tapering 

 laciniae, which are scarcely transversely costate, and only show 

 such ribs near the base. This lichen, so abundant in New 

 Zealand, shows wonderful diversity of aspect, and the present 

 is one of the most characteristic. 



