156 Transactions. 



Bidens pilosa L. 

 Bidens pilosa L., Sp. Plant. 832, 1753. 

 Recorded : F. Muell., Fragm. Phytogr. Austr. ix, 77, 1875. 

 Habitat : Open places on rocky ridge on top of sea-cliffs, north coast. 

 Maiden states that this species was brought with potatoes by whalers 

 from Sunday Island (Proc. Linn. Soc. N.S.W. 23, 150, 1898). 



Distribution : Norfolk Island, Kermadecs, New Zealand, Australia, 

 New Caledonia, tropical regions. 



Cotula australis (Sieb.) Hook. f. 

 Anacyclus australis Sieb. ex Spreng., Syst. hi, 497. 

 Recorded : Maiden, Proc. Linn. Soc. N.S.W. 23, 130, 1898. 

 Distribution : Norfolk Island, Kermadecs, New Zealand, Tasmania, 

 Australia, Tristan da Cunha. 



Erechtites quadridentata (Lab.) DC. 

 Senecio quadridentata Lab., Nov. Holl. Plant. Sp. ii, 48, 1806. 

 Recorded : F. Muell., Fragm. Phytogr. Austr. ix, 77, 1875 ; Hemsley, 

 Ann. Bot. x, 240, 1896. 



Habitat : Admiralty Islets (Maiden). 

 Distribution : New Zealand, Tasmania, Australia. 



Senecio insularis Bentham. 

 Senecio insularis Bentham, Fl. Austr. iii, 666, 1866. 

 Recorded : Bentham, I.e. ; Hemsley, Ann. Bot. x, 240, 1896. 

 Habitat : Undergrowth in forest from sea-level to summit of Mount 

 Gower; abundant. 



Distribution : Endemic. According to Bentham, approaches in several 

 respects the New Zealand S. Kirkii Hook. f. 



Sonchus oleraceus L. 

 Sonchus oleraceus L., Sp. Plant. 794, 1753. 

 Recorded : Macgillivray, Kew Joum. Bot. vi, 353, 1854 ; Maiden, 

 Proc. Linn. Soc. N.S.W. 23, 130, 1898. 



Habitat : Maritime meadow, rocky ridge on top of sea-cliffs, north 

 coast. Admiralty Islets (Maiden). 



Distribution : Norfolk Island, Kermadecs, New Zealand, Tasmania, 

 Australia ; cosmopolitan. 



V. INTRODUCED ELEMENTS. 

 1. Plants. 

 A list of all plants recorded as introduced to Lord Howe Island by 

 human agency follows. These occur in waste places among the settle- 

 ments, and appear where the forest has been disturbed by man. Other- 

 wise, as far as my observations go, they have scarcely entered any of the 

 natural plant formations on the island. 



Imperata arundinacea Cyr. : Maiden, Proc. Linn. Soc. N.S.W. 23, 143, 



1898 (as indigenous). 

 Panicum sanguinale L. : F. Muell., Fragm. Phytogr. Austr. viii, 153, 1874 



(as indigenous). 



