Barlow, Advances in systematic knowledge Loranthaceae and Viscaceae 
855 
Table 2. Australian genera and species of Viscaceae, as recognized by successive students of 
the famiiy. Epithets shown in italics under Denser indicate species accepted by him but not 
known from Australia at the time. 
Blakely 
(1928) 
Danser 
(1937-1941) 
Barlow 
(1983a, 1984b) 
KORTHALSELLA 
KORTHALSELLA 
KORTHALSELLA 
australis 
breviarticulata 
breviarticulata 
- 
- 
gray! 
brassiana 
opuntia 
japonica 
- 
- 
leucothrix 
- 
papuana 
papuana 
articulata 
opuntia 
rubra 
NOTOTHIXOS 
NOTOTHIXOS 
NOTOTHIXOS 
cornifolius 
cornifolius' 
cornifolius 
incanus 
incanus' 
incanus 
leiophyllus 
leiophyllus' 
leiophyllus 
subaureus 
subaureus' 
subaureus 
VISCUM 
VISCUM 
VISCUM 
angulatum 
articulatum 
articulatum 
bancroftii 
bancroftii 
bancroftii 
- 
ovalifolium 
ovalifolium 
white! 
white! 
white! 
* Danser did not revise Notothixos for Australia, but accepted Blakeley's treatment. 
Denser (1929,1933) included Australian taxa in his new generic system. He saw few 
specimens, and depended largely on species descriptions, especially those of Blakely. 
Because Danser's detailed revisions were largely centred on Malesia, his generic 
treatment was not generally taken up in Australia, and the laborious tasks of curating 
collections in Australian herbaria were mostly not undertaken. When 1 commenced 
my work on Australian Loranthaceae in 1960, most Australian collections were still 
arranged according to Blakely's work of 40 years earlier. 
The major exception was Lawrie Johnson's effort to reconcile the collections at the 
National Herbarium of New South Wales with Danser's new system. Johnson referred 
the Australian specimens to the several segregate genera which Danser accepted for 
Australia. In detailed annotations on herbarium sheets, he also identified cases where 
Danser's allocation of species to genera appeared to be unsatisfactory. In general, 
Johnson's observations have been supported by subsequent studies. In Sydney he, 
therefore, not only brought taxonomic treatment of Australian mistletoes up to date, 
but contributed original observations to refine it. 
My subsequent work (Barlow 1962, 1966, 1982, 1984a, 1984b, 1992, 1993) has, in 
essence, extended and fine-tuned Danser's work, principally in two ways. Firstly, 
the number of species recognized in Australia has been substantially increased. This 
is mostly an outcome of exploration, which has revealed many species not previously 
known in Australia. Some of these are new to science, whilst others are Malesian 
species newly recorded for Australia. 
