212 
NOTES ON THE GENUS DIl'LANTHERA. 
of an acicular Ilakea, or one of the acerose Melaleuca, producing two- 
jointed ultimate branchlets, the upper joint exceeding the lower many 
times in length, and assuming the form of a real leaf. The four apices 
of this leaf-like joint cohere into a sphacelate point. The male flowers 
are, as yet, unknown, but the fruit is precisely that of congeners. 
The following diagnosis comprises the cardinal characters as for as 
they are extant in the specimens gathered by the late meritorious 
James Drummond, from whose enlightened son the Melbourne bota- 
nical museum received the whole normal collection of plants secured 
by his father during a long series of years in West Australia, many oi 
the plants being solely contained as yet in this collection. 
Casuarina acuaria (n. sp.) ; ramulis ultimis quaterno-verticillato 
biarticulatis, membro infero perbrevi in dentes (folia) quatuor semi- 
lanceolatos desinente, membro supero in folium acuarium inarticulatuvi 
eloiigato, strobilis ambitu globosis, paribus bracteolarum fere octo- 
seriatis, bracteis ciliatis breviter cuspidatis, bracteolis valvaribus (seim- 
nigeris) semiexsertis, lamina harum exteriore in rostrum pertenue 
longumque prostrata, lamina interiore e dorso brevius rostrata mtus 
subtiliter pubescente, seminum nucleo spadiceo ovato-rhombeo, ala 
eomm cordato-deltoidea excursu nervi mediani curvato-mucronulata. 
In Australia occidental!. 
NOTE ON THE GENUS DIPLANTHKRA. 
By Dr. F. Mueller, F.R.S. 
The genus Diplanthera, established by Banks and Solander, was 
placed by E. Brown provisionally at the end of Solanece, and allusion 
was made by that great phvtologist to its apparent approach to Scro- 
' jphilarinecB, or, perhaps, to Gesneracea and Sesames. The illustriou 
Bentham placed the genus, without having a ready opportunity o 
examining it, among Scrophularinea, next to Wightia and FowIoiM'"- 
Under these circumstances it is not surprising that neither Dr. # 
lard nor Dr. Bureau recognized the genus when a new species froni 
New Caledonia turned up. Neither did the writer of these remarks 
have his attention directed to Diplanlhera when describing 
Bnltceria as a truly Bignoniaceous genus. To Dr. Scemann is due 
