Descriptive Notes on Papuan Plants. 57 
RUTACEiE. 
Halfordia drcpifera. 
F. V. il. Fragm. Phytogr, Austr. v. 43. 
Mai-Kussa ; Sir W. Macgregor. 
Unless the ripe fruit, which is not available yet, should un- 
expectedly exhibit marked differences, this plant ought not be 
specifically separated. Referring further to Rutaceae it might be 
noted, as here so very readily overlooked, that the genus Herzogia 
(Schumann’s Flora von Kaiser Wilhelm’s Land 60), as mentioned 
by the author himself, seemingly on suggestions by Warburg, is 
founded on an abnormal state of Euodia hortensis ; see Uhlworm’s 
Bot. Central Blatt 1889, p. 265. As regards the union of Melicope 
with Euodia, to which under Herzogia is alluded, that measure has 
received already in 1873 the support of so experienced a phyto- 
grapher as Baillon (Ilistoire des Plantes, Rutacees p. 469). Connected 
with this question it should be considered, that in the neighbouring 
genus Boronia some species occur, as well known, with four sterile 
stamens ; yet they by universal opinion have not been excluded 
from that genus. The practical advantages of dealing with large 
genera are much greater, than any disadvantages arising from the 
union of such, as are founded on but slight differences. This 
principle is also maintained throughout in Bentham and J. Hooker’s 
great work. 
Acradenia was transferred by the writer from the tribe Boroniaceae 
to that of XanthoxylesB already 1867 (Papers of the Royal Society 
of Tasmania p. 7-8) after then completed investigation of the 
carpology of that genus. 
A species of Citrus occurs as indigenous about 300 miles up the 
Fly-River according to Mr. Baeuerleii; the size of the fruit was 
that of a Seville-Orange. 
URTICACEiE. 
Ficus iiesperidifokmis. 
King in the Journal of the Asiatic Society of Bengal Iv. 401 (1886). 
Eastern New Guinea ; II. 0. Forbes. 
Besides the following species are by the same author described as 
new in the above quoted publication chiefly from the same collection. 
