95 
is easily distinguishable by its relatively short leaves, having few, lanceolate, 
grouped leaflets, glossy and smooth on both surfaces ; by the sheaths 
prolonged into an excessively long, slightly inflate ocrea, which is orna- 
mented with oblique spinuliferous slightly raised ridges; by the strict 
long-pedicelled spadix with a very densely flowered panicle; and by the 
primary spathe having an elongate, thinly-membranous, lacerate, externally 
prickly limb. 
CALAMUS ARFAKIANUS Beee., sp. nov. 
Gracilis, scandens, caudice 5-10 mm. diam., vaginis flagelliferis, spinis gracilibus, 
interdum brevissimis, parce armatis, in ore et in ocrea brevi barbatis ; foliis non 
cirriferis, brevibus, petiolo brevissimo, segmentis paucis per greges paucos inter se 
remotos approximatis, lineari-lanceolatis, subulato-acuminatis, tenuiter papyraceis, 
unicostulatis, nervis secundariis utrinque 1-2 tenuibus, costa media et nervis omnibus 
levibus; segmentis intermediis circiter 20 em. longis, 15-20 mm. latis, duobus 
terminalibus basi breviter connatis vel fere liberis; spadicibus valde elongatis et 
flagelliformibus; spathis elongatis arcte vaginantibus; spadicis g ramis_ primariis 
paucis, remotis, spicas numerosas deflexas ferentibus; spicis majoribus 15-18 mm. 
longis, floribus utringue 13-15 fere contiguis; spathellis coneavis, bracteiformis ; 
spadicis 9 ramis primariis paucis, remotis; spicis majoribus 4-5 em. longis, floribus 
utrinque 8-10; fructibus late ovato-ellipticis, abrupte mucronatis, 15 mm. diam. ; 
seminis albumine homogeneo. 
Scandent and very slender. Sheathed stem 5-6 or at most 8-10 mm. in 
diam. Leaf-sheaths flagelliferous, not or only sligitly gibbous above, at 
times almost smooth, and only slightly (and very minutely) tubercled- 
spinulous in their upper part; but in some specimens rather densely covered 
with scattered or slightly confluent bristle-like spines, which become closer, 
considerably longer, and more hair-like, near and on the margins of the 
. mouths of the same Jeaf-sheaths, and of the ocrea, which because of them 
looks bearded. Leaf-sheath flagella very slender and long, and armed 
irregularly with very minute scattered claws, Leaves non-cirriferous, short, 
40-60 em. long; petiole very short, 2-3 cm. long at most; rhachis fuga- 
ciously rasty-furfuraceous like the petiole, armed beneath with unequal, 
rather long-tipped, scattered or ternate claws. Leaflets few, 15-19 in all, 
very irregularly set, usually approximate in three groups separated by long 
vacant spaces of rhachis; they are narrowly lanceolate or linear-lanceolate, 
gradually subulately acuminate, thinly papyraceous, almost shining and about 
the same colour on both surfaces ; have the mid-costa very sharp above, and 
one, or at times two slender secondary nerves on each side of it ; mid-costa 
and nerves quite naked and smooth on both surfaces ; transverse veinlets 
rather sharp and not very crowded ; the margins have only a few distant, 
almost inconspicuons, appressed spinules, closer and more distinct in the 
apical part; the leaflets of the interme tiate and lower groups are about 
