98 
lanceolate, gradually tubulately acuminate, papyraceous, rather rigid, almost 
shiny and of about the same colour on both surfaces, have the mid-costa very 
sharp above, and one or two slender secondary nerves on each side of it; 
underneath they are quite smooth, but above have occasionally a few very 
minute spinules on the mid-costa, and on a secondary nerve on each side 
of it ; transverse veinlets much interrupted and not very sharp ; the margins 
almost smooth, or very inconspicuously spinulous, more distinctly so at the 
apex; the intermediate leaflets are 15-18 cm. long and 20-25 mm. wide, 
the lowermost and the upper ones gradually smaller, the two terminal being 
the smallest, free, or more or less connate at the base. Male spadix 
flagelliform, very long and slender, with very few and distant partial 
inflorescences ; primary spathes very narrowly tubular and elongate, very 
closely sheathing, more or less armed with scattered small claws, the lowest 
compressed with rather acute margins ; the others cylindraceous, somewhat 
produced and lacerated at apex; partial inflorescences ascendent, rather 
short, the lowest and largest about 10 cm. long with 5-6 spikelets on each 
side ; secondary spathes very narrowly tubular-infundibuliform, or with a 
flattened base, and slightly enlarged above, obliquely truncate at their 
mouths, and there slightly produced at one side into a triangular point, 
which embraces the bases of their respective spikelets ; spikelets spreading, 
the largest (lowest) about 3 em. long, with 13-15 flowers on each side; the 
upper are shorter, and have fewer flowers; spathels shallowly and broadly 
infundibuliform, truncate, strongly striately-veined ; invelucre cupular, 
obsoletely two-keeled and slightly two-toothed on the side next to the axis. 
Male flowers ovoid, inserted at an angle of about 45°, not in contact with 
each other, but separated by the blades of their respective spathels. Female 
spadix and fruit unknown. : 
Hab. Arfak Mts., near the Monswoon Snoon (¢ lake) at about 8000’. 
Collected by Mr. A. E. Pratt. 
It is closely related to C. arfikianus, from which it differs in the leaves 
having unequidistant, but not distinctly grouped leaflets, on that account 
resembling C. Muellert more than C. arfakianus. From C. Muelleri it differs 
also in having larger spikelets, and having ascendant non-contiguous flowers. 
C. Prattianus is characterized by its slender stem with cirriferous leaf- 
sheaths and short non-cirriferous leaves; by the ocreze and the mouths of 
the leaf-sheaths being furnished with long bristles ; by the lanceolate 
unequidistant (but not distinctly grouped) and almost smooth leaflets ; by 
the very slender and long-flagelliform male spadix having only a few partial 
inflorescences furnished with but few spreading spikelets ; these have briefly 
infundibular spathels and bear the flowers inserted at an angle of about 45°, 
a little apart one from the other. 
