COMPOSITAE 



497 



COMPOSITAE 



VERNON I A Schreber 



VERNONIA CINEREA (Linn.) Less, in Linnaea 4 (1829) 291. 



Conyza cinerea Linn. Sp. PI. (1753) 862. 



Senecio amboinicus Rumph. Herb. Amb. 6: 36, t. 14, f. 2. 

 Amboina, in and about the town of Amboina, Robinson PL Rumph. Amb. 

 426, August 4, 1913, in waste places, along roadsides, on walls, etc. 



Senecio amboinicus was first reduced by Linnaeus, Amoen. 

 Acad. 4 (1759) 134, Syst. ed. 10 (1759) 1213, Sp. PL ed. 2 (1763) 

 1208, to Conyza chinensis Linn., which is supposed to be Blumea 

 chinensis (Linn.) DC. Lamarck, Encycl. 2 (1768) 83, correctly 

 reduced it to Conyza cinerea Linn.=V ernonia cinerea Less. 

 Blume, Bijdr. (1826) 893, places it under his V ernonia linifolia, 

 while de Candolle, Prodr. 5 (1836) 25, places it under V ernonia 

 leptophylla DC. ; both of these are synonyms of V ernonia cinerea 

 (Linn.) Less. 



ADENOSTEMMA Forster 



ADENOSTEMMA LAVENIA (Linn.) O. Kuntze Rev. Gen. PL 1 (1891) 304. 



Verbesina lavenia Linn. Sp. PI. (1753) 902. 



Adenostemma viscosum Forst. Char. Gen. (1776) 90. 



Olus scrofinum album Rumph. Herb. Amb. 6: 34, t. 14, f. 1. 

 Amboina, near the town of Amboina, Robinson PL Rumph. Amb. 4-27, 

 July 25, 1913, in wet places. 



Linnaeus, Amoen. Acad. 4 (1759) 134, Sp. PL ed. 2 (1763) 

 1208, followed by Burman f., FL Ind. (1768) 179, erroneously 

 reduced Olus scrofinum to Conyza cinerea Linn.=V ernonia 

 cinerea Less. The description given by Rumphius is unmis- 

 takably applicable to Adenostemma, while the figure is a fair 

 representation of this common and widely distributed species. 

 Hasskarl, Neue Schlussel (1866) 158, considered that Olus 

 scrofinum album was in all probability Adenostemma viscosum 

 Forst. 



AGERATUM Linnaeus 



AGERATUM CONYZOIDES Linn. Sp. PI. (1753) 839. 



Olus scrofinum rubrum Rumph. Herb. Amb. 6: 35. 

 Amboina, roadsides in and about the town of Amboina, Robinson PL 

 Rumph. Amb. 428, August 4, 1913. 



The description agrees sufficiently well with Ageratum cony- 

 zoides Linn, to render this determination of Olus scrofinum 

 rubrum fairly certain. Hasskarl, Neue Schlussel (1866) 158, 

 has suggested that it may be a species of Conyza (Blumea) or 

 Vernonia. 



144971—32 



