Vol. Ti, No. 7.1 A Parasite upon a Parasite. 301 
[N.S. ] 
quoted from Just’s Jahresber., 1896, i., p. 353); Viscum album 
, 
‘ 6, p. 235); a 
by Sir Henry Collett in the Shan Hills on a Loranthus,!' and on 
b., respectively (Collett and Hemsley in 
p. 122). 
fore, say that double parasitism and leafiness are incompatible: yet 
one would think that a water supply twice fought for, 7.e., between 
the first parasite and its host and between the second parasite and 
the first, would be so hardly won as to lead to the need of the 
utmost economy of water on the part of the second parasite. ; 
Viscum articulatum is a very variable plant and so is Tupeia 
antarctica. Engler says Sage Jahrbucher, xx., 1894, p. 80) that 
leaves than species of the steppes. Molkenboer, a Dutch 
botanist, has hinted that there may be some relation between the 
nature of its host and the form that the parasite takes (Plante 
more leaflike are its stems. If that beso, then my specimens were 
most unfortunate, for there was in them an almost complete 
absence of wing. : 
It is this almost complete absence of wing that has made me 
to name mine above as “apparently V. articulatum. 
ton caer Se 
ree 
i iti ingle record can I 
1 This Loranthus was parasitic on a Quercus. Not a single r 
find of the complete identification of all three associated genet in cect 
cases of double parasitism, This case and Mina-Palumbo cs oa tified ’ 
the most completely reported, but in neither is the Quercus identified. 
ee 
