428 DICOTYLEDONS AND CONIFERS 



Erigeron annuus, Linn. 



H. Carse found this species in some quantity in freshly sown 

 grass at Otukai, Mongonui in January, 1917. 



Siegesbeckia orientalis, Linn. 



Recorded in 1896 by Cheeseman as occurring in the North Cape 

 district. 



Bellis perennisy Linn. Daisy ; Gowan 



Probably introduced at an early date, but first recorded by Hooker 

 in 1864. It is abundant in lawns and meadows in all parts of New 

 Zealand. (Fl., Sept. to June.) In Europe this species is fertilised 

 by Bombus terrestris, Eristalis tenax, Musca corvina, M. domestica, and 

 Lucilia c<zsar l . 



Xanthium strumarium, Linn. Burweed; Small Burdock 

 In a leaflet (No. 5) issued by the Agricultural Department in 1893, 

 it is stated that " on a quantity of ballast brought from Buenos Ayres 

 by the ' Silverstream,' and discharged in heaps at Wellington Railway 

 Station, grew a quantity of this species." The plant died out later. 



Xanthium spinosum, Linn. Bathurst Burr 



First reported in Hooker's list of 1864, then by Kirk in 1877 at 

 Wellington. In 1882 Cheeseman records it as occurring in waste 

 places about Auckland and the Waikato, l?ut adds : " it nowhere shows 

 signs of becoming as abundant and troublesome as in certain parts 

 of Australia." In 1893 the Agricultural Department report it as 

 spreading in many parts of New Zealand, in 1896 in Gisborne and 

 other parts of the Auckland district, and in 1895 as well established 

 in Poverty Bay, especially in native lands. (Fl., Feb. to April.) 



Declared a noxious weed in the Second Schedule of the Act 

 of 1900. 



Ambrosia artemisicefolia. American Ragweed 



Recorded in 191 1 from Waverley by the Agricultural Department ; 

 introduced in American red-clover seed. 



Pascalia glauca, Orteg. 



First recorded by Kirk in 1895 as occurring on a ballast heap in 

 Wellington. Introduced from Buenos Ayres. 



1 In 1871 Armstrong reported Helianthus tuberosus, the Jerusalem artichoke, 

 as naturalised in Canterbury. The species may occur temporarily as a garden escape, 

 and is often thrown out with garden refuse. But as it seldom flowers and does not 

 seed to my knowledge in New Zealand, its increase is most improbable. 



In 1879 Armstrong also reported Helianthus annuus, Linn., the common sun- 

 flower from Canterbury. This plant does occasionally occur as a garden escape, but 

 it never establishes itself. 



