292 ON A NEW GENUS OF RUBBER-PRODUCING PLANTS. 
named specimen was communicated by its author to Sir W. 
Hooker, and is preserved in the Kew Herbarium. This species is 
mentioned amongst the Rubbers enumerated in the Kew Reports 
for 1878 (p. 39) and 1880 (p. 47), as yielding the gutta-jelutong. 
The other, a very closely allied and apparently undescribed spe- 
cies, is a native of Borneo, and was sent first by Mr. Low as the 
Gutta Jelutong of that island, and subsequently from the Singa- 
pore Botanie Gardens by Mr. Burbidge under the same name. 
Fortunately flowering individuals of both these species have been 
collected. Of the Malacca one first by Griffith (who is indeed the 
discoverer of that one, and hence of the genus), and who communi- 
cated specimens to Dr. Wight, then resident in the Madras Pre- 
sideney, and to Dr. Gardner, when that botanist was Superin- 
tendent of the Ceylon Botanie Gardens, and both of which are 
preserved at Kew; secondly, by that indefatigable Indian 
botanist Dr. Maingay, whose specimens in flower and young fruit 
are accompanied by MS. notes; and, lastly, by Mr. Murton, late 
Superintendent of the Singapore Botanical Gardens, who has 
communicated to the museum at Kew leaves and old fruits, from 
which unfortunately the seeds have escaped. Of the Bornean 
plant, the only flowering specimens I have seen are from Dr. 
Beccari, and are the No. 3570 of his splendid herbaria. But 
besides the leafy one above mentioned from Mr. Low and the 
eultivated ones procured by Mr. Burbidge, there is in the her- 
barium one from Mr. Lobb collected in 1856, or thereabouts, in 
Borneo. 
For this genus I propose the name of Dyera, after Mr. Thiselton 
Dyer, F.R.S., the Assistant Director of Kew, to whom I am in- 
debted for the discrimination of the Rubber-yielding plants enu- 
merated in the Kew Reports, and whose paper on the subject is 
now, I believe, to be presented to the Society. It nearest affinity 
is no doubt with Alstonia, from which it differs conspicuously 
in the sessile stigma, a character rare in the Order, and in 
the singular fruit. It further differs from that genus in the 
extraordinary minuteness of the flowers, which are scarcely jl of 
an inch in length, whilst the ovules have a diameter (as taken 
from dried specimens after saturation with warm water) of only 
zro to zh, of an inch. These latter minute organs are succeeded 
by fruits of unusually large dimensions for the Order. 
