51 



living fences or for culinar or medicinal purposes. It does not blossom 

 before it is somewhat advanced in age; the fruits which are plentifully 

 produced possess a pappus. In Java the plant is very common and 

 blossoms and fruits throughout the year. In 1897 it was found on the 

 north-western side of Krakatao where some localities are not unfit 

 for it; P e n z i g however does not mention it under the common 

 species. I do not think it probable that Treu b has found this plant, 

 so easily recognizable by its leaves and its peculiar smell, without 

 being able to find out its name. Every native accompanying him 1 ) 

 must have known it. 



Of the genus Blumea, all species of which possess a pappus, 

 until now the following species have been found on Krakatao: 



Blumea lacera D. C. (Conyza lacera Burm.), an annual herb of 

 sunny roadsides, alangfields and other dry grassy localities and 

 neglected fields, occurs throughout Java from sea-level up to 1000 

 m. In the surroundings of Batavia and Tandjong Priok this species is 

 very common; it was found with certainty on Krakatao for the first 

 time in 1908. I do not think it very probable that Treu b has found 

 this easily recognizable plant which blossoms already when young, 

 without being able to find out its name. 



Blumea ba/samifcra D. C. (Conyza balsamifera L.) a robust, 

 often shrubby plant of sunny localities, alangfields, grass-jungles and 

 light woods, occurs throughout Java from the plains up to 2000 m. 

 In the surroundings of Batavia it is not rarely found spontaneously 

 growing but more often yet it is cultivated by the natives for its 

 medicinal properties. In 1897 it was found by Penzig on the 

 north-western side of Krakatao. The plant does not require a very 

 fertile soil; it blossoms only when somewhat advanced in age. I think 

 it quite possible that one of T r e u b's species of Conyza was this 

 Blumea occurring in specimens too young for recognition. 



Erigeron linifolius Willd, wrongly named by Boerlage Blumea 

 hieracifolia D. C. and mentioned under this name in the list of 

 Penzig, was found in 1897 on Krakatao. This species, which like 

 all the rest of the genus possesses a pappus on the fruits, deceivingly 

 resembles a Conyza and has been described as a species of that 

 genus (C. angustifolia Thwaites). As late as 1905 it was lying under 



') As appears from the photo mentioned on p. 36, footnote 1, that party was 

 accompanied by at least 5 natives. 



