16 Transactions. 



40. Psilotum triquetrum Swartz, M. 3. 



On tree-trunks in the darker forests. 



Kermadecs, New Zealand, New Caledonia, Lord Howe, Australia, tropics 

 and subtropics. 



Lycopod vim densum is recorded by Maiden, on the authority of Benth. 

 (vii, 676), but there is no first-band evidence of its collection on Norfolk 

 Island . 



Gymnospermae. 



Con i [ferae. 



41. Araucaria excelsa R. Br., E. 76, M. 1. 



The well-known Norfolk Island pine ; still abundant from the seashore 

 to the top of Mount Pitt. 

 Endemic. 



Angiospermae. 



Monocotyledoneae. 



Typhaceae. 



42. Typha angustifolia Linn. var. Brownii Kron., M. 130. 



Longridge and in swampy watercourses in several parts of the island. 

 This is. I think, doubtfully indigenous. 



Kermadecs. New Zealand, Australia. Almost cosmopolitan. 



Pandanaceae. 



43. Freycinetia Baueriana Endl., E. 63, M. 129. 



Common in the bush, trailing and climbing. 

 Endemic. 



Gramtneae.| 



It becomes still more difficult in this family to distinguish between intro- 

 duced and indigenous species. M. (p. 725) quotes Governor Phillip as say- 

 ing, in 1788, " that not a single blade of grass has been seen on this island," 

 and finds it " not easy to understand this statement." It appears to me that 

 we must accept the statement as meaning at least that there was no pastur- 

 age upon the island. During the last hundred years, however, grass-seed 

 has been frequently sent from Sydney to Norfolk Island ; and this makes 

 it certain that many Australian grasses have been imported, and will now 

 appear to be indigenous. Now, Bauer spent many months on the island 

 during 1804-5, and collected very carefully, and any grasses not collected 

 by him must be regarded as quite doubtfully indigenous. We shall cer- 

 tainly be much safer in excluding such species than in retaining them. In 

 one or two cases their habitats may be such as to make their introduction 

 improbable ; but the majority are found chiefly in the pasture lands. I 

 would therefore exclude the following : Panicum effusum R. Br., M. 145 ; 

 Andropogon affinis R. Br., M. 152 ; Microlaena stipoides R. Br., M. 153 ; 

 Sporobohis indicus R. Br., M. 155. 



None of these were collected until Maiden visited the island in 1902. 

 All of them are grasses likely to be imported. Some of them may have 

 been only temporary inhabitants of the island. I did not collect 145. 152, 

 153, 154* 158, of Maiden's list, 



1 1 have to thank Mr. D. Petrie, of Auckland, the well-known authority, for his 

 kind assistance in the determination of the .species. 



