D. didymophylius BECCARL THE SPECIES OF DAEMONOROPS. 125 
HaBrrar.— The Malayaa Peninsula, in the district of Perak (Scortechint in Herb. 
Beccari.) and in the same district at Larut, from 100—1,000 m. above the level of 
the sea [King’s collector No. 2593, (? sp.) 5104 (9? sp.), 6315 (d specimen) in Herb. 
Caleutt.]. In Singapore at Chan Chu Kang (Aidley No. 3476, Herb. Beccari.) at Buket 
Timah (Ridley No. 5875, Herb. Beccari.), at Selitar (Ridley No. 6277, Herb. Beccari.), at 
Changi (Ridley No. 6273 9, 3 specimen in Herb. Beccari.) Specimens apparently from a 
young plant with sheathed stem, 12-15 mm. in diam., were collected by Seortechini at 
about 1,000 m. on Gunong (Mount), Tambang Batak in Perak, and bear the No. 651° 
and the vernacular name of “ R. Pracia”. Ridley gives the Malay an name of “R. 
Undang" in Singapore. D. didymophylius yields a small quantity of Dragon's blood. 
D. didymophyllus grows also in E. Sumatra, as I consider as belonging to it a 
small fruit spadix preserved in the Herb. Hort, Bot. Bogor. and collected by 
Teijsmann at Batu Radja in the Resittency of Palembang; vernacular name * Rotang 
Djernang ketchil”’. : | 
OBsERVATIONS.—A very peculiar species easily distinguishable by its geminate leaflets, 
and short female spadix with oblong, very concave-cymbiform and obtuse spathes, 
and by its fruits slightly covered with dragon’s blood resin, It is related to D. 
Motleyi of Borneo only (see observation on this species) Like almost all the other species 
of Daemonorops, it presents a great variability in its different organs, and specially 
in the length and armature of the pedicellar part. In specimens from Perak this part 
is almost spineless and very long, with the spadix therefore nodding or occasionally 
recurved; in others it is not more than 2-3 cm. in length, and the spadix is therefore 
erect; in specimens from Singapore the peduncular part is 3-5 cm, long, and more 
or less strongly armed with digitate, divergent spines. 
D. cochleatus Teijsm. & Binn. (Rotang Buwar) which is only a synonym of 
D. didymophyllus, was indicated by name only in the “¿Catalogus Plantarum Horti 
Bogoriensis”, without a word of description or any note as to its origin. I received 
good specimens of it from the Buitenzorg garden, but I did not recognize in it 
my JD. didymophyllus, of which a description was published in the Flora of British 
India, otherwise I should have adopted the specific name of D. cochleatus, as this 
well defines the form of the characteristic spathes of its female spadix. The spathes 
of the female spadix of the “ Rotang Buwar”, cultivated at Buitenzorg, are more 
deeply concave than those of the specimens from Singapore, or in those from the Malayan 
Peninsula. Its native country | suppose to be South-East coast of Sumatra, 
probably Palembang. 
PLATE 49.—Daemonorops didymophyllus . Bece. An intermediate portion of a leaf 
(upper surface); a female spadix not yet expanded (in the right lower central part of 
the plate) from Ridley’s No. 6277 in Herb. Beccari.; female spadix with young fruit 
(quite in centre of the plate, from Ridley's No. 5875 in Herb. Beccari:); male spadix 
before the anthesis, on the right-hand side (from Ridley's No. 6273 in Herb. Beccari.), 
Pirate 50.—Daemonorops didymophyllus Bec. An intermediate portion of a leaf 
(under surface); portion of the sheathed stem with a male spadix before the anthesis ; 
