42 THE FLORA OF NORFOLK ISLAND, 



as lias been ascertained at present. Those marked F. v. Mueller 

 in brackets were communicated by that botanist in a letter. The 

 determinations were by Mueller Arg., and I do not know whether 

 they have been previously published. The remainder, unless 

 otherwise indicated, were collected by Mr. Boorman and myself. 



Older Collemaceae. 

 Tribe C o l l e m e ^. 



1. Leptogium tremelloides, Linn. 



2. Physma byrsinom, Ach. — On trunk of Pittosporum hracteo- 



laticm. 



Order DiscocarpesB 



Series Thamno-phylloblaste^. 

 Tribe U s n e ^e. 



3. Ussea barbata, Ach., and var. Florida (Linn.), Fr. — On 

 dead branches. 



4. U. intercalaris, Krp. — On dead branches. Uanea is com- 

 mon on the Pines from top to bottom on the W. side. 



5. EvERNiA melaxantha, Ach., Endl , Prod. Norf. 4. 



It is quite probable this is meant for Neuropocjon melaxantha, 

 Nyl. Neuropoijon melaxantha, however, has never, so far as I 

 can ascertain, been found in other than Arctic and Antarctic 

 regions, or on very high mountains. Specimens in the National 

 ■ Herbarium, Sydney, are from Mt. Wellington, Tas., Mt. Macedon, 

 Yic, and from mountains 3000 feet high in New Zealand. There 

 are also specimens from Mt. Kosciusko, N.S.W., collected by J. 

 H. Maiden. 



Tribe R a m a l i n e ^e. 



6. Ramalina leiodea, Nyl, var. fastigiata, Muell. Arg. — On 

 dead branches in company with Usnea Jiorida. 



7. R. farinacea, Linn. — On dead branches in company with 

 R. fastigiata. 



R. thrausta (Ach.), Fr. 1 — Only fragmentary specimens were 

 present, in company with Thelochi&tes Jiavicans. 



