66 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [D. físsus 
ensiform, papyraceous, thin but rather rigid, green on both surfaces, slightly paler beneath, 
very slightly narrowing towards a not very acute base, broadest 5-8 em. above 
the base, and thence very gradually acuminate to a very fine subulate tip; the 
mid-costa and one, and sometimes two, more or less distinct nerves on each side of 
it bristly on the upper surface; on the lower the mid-costa alone rather closely and 
appressedly spinulous; margins rather closely and appressedly spinulous; the largest 
leaflets, those a little above the base, 40 cm. long, 18-20 mm. broad. Male 
spadiz . . . Female spadiz erect, sessile or nearly so, strongly spinous at its base, 
ventricose-fusiform before flowering and rather suddenly narrowing into a beak about as 
long as the body, 50-55 cm. long, including the beak, with 5-6 very approximate, 
partial inflorescences; outer spathe deeply cymbiform, rather distinctly two-keeled, 
almost entirely covered with a blackish crustaceous indumentum and armed all over 
with flat, rigid, rather broad, 1-2 cm. long, blackish, spreading, scattered or somewhat 
confluent spines; the second spathe spinous only near its apex, the others unarmed ; 
axial parts of the spadix fugaciously sparingly rusty-furfuraceous; partial inflore- 
scences 8-9 cm. long, with 8-10 spikelets in all; the largest of these, the lower 
ones, 3-4 em. long, bearing 4-5 flowers on each side and with the internodes 
between two flowers very short; spathes bracteiform, amplectent, extended at one side 
into a broadly triangular acute limb; involucrophorum slightly protruding beyond the 
spathes, short, obconical, angular, slightly callous at its axilla and expanded at its apex 
into an oblique shallowly subcupular limb which is extended externally into a 
triangular acute point, the latter about as long as or exceeding the margin of the 
involucre; involucre exactly cupular, truncate, entire, almost wholly immersed in the 
involucrophorum; areola of the neuter flower flat, slightly callous only at its base 
which is immersed in the involucrophorum. Female flowers not very broadly ovate, 
7 mm. long, acuminate; the calyx cupular, truncate, with three superficial obtuse teeth, 
not very conspicuously striately veined ; the corolla about twice as long as the calyx, 
its segments lanceolate, narrow in their upper part and acute; neuter flowers slender, 
linear, 6-7 mm. long, 2 mm. thick, often curved, asymmetric, obsoletely trigonous 
or flattened by pressure; their calyx with three very short teeth, the corolla twice 
as long as the calyx or even longer. Fruiting perianth explanate. Fruit globose, slightly 
ovoid, rather distinctly conically beaked (at least when not quite mature), 
13-14 mm. in diameter; scales in 18 longitudinal series, distinctly but not very deeply 
channelled along the centre, of a rather uniform cinnamon-brown or rusty-ochra- 
ceous colour with a rather broad, darker marginal line, tip obtuse. 
Hanrrar.—On the River Dusson in South Borneo (Korthals, fide Miquel), 
and collected probably in the same region by Henrisi (fide Blume), In the Kew 
Herbarium there is a specimen collected by Zow, on which is given to it the Malay 
name of ‘ Rotang Sambirangan," but the exact locality is not stated. Teijsmann 
(lc.) gives the name “ Latong bulu,” 
OsssRvATIONS.—JD. fissus has been established by Blume on the fruit-spadix of a 
Daemonorops collected by Henrici in Borneo and the leaves of Calamus Seipionum, 
as I have been able to ascertain after inspection of the  type-specimen. I 
have described the same fruits figured by Blume which, however, are not mature 
enough for a study of the seed. My description of the plant is derived chiefly from 
