188 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [C. filipendulus 
Piatt 43.—Calamus corrugatus Becc. The entire specimen, described above, 
of P. B. No. 1910 in Herb. Becc. 
34. CaLAMUS papuanus Bece. Malesia, iiij 60, and in Rec. Bot. Surv. Ind. ii, 
201. Calamus sp. No. 47., Becc. Malesia, i, 88. 
DzscgrPTION.—Scandent, slender, very long. Sheathed stem 6-8 mm. in diam. 
Leaf-sheaihs ^ flagelliferous, gibbous above, faintly striate longitudinally, fuga- 
ciously furfuraceous, sprinkled throughout with very small tuberculiform spines 
which point upwards, which are more numerous along the slightly raised 
longitudinal line that corresponds to the side where the flagella are inserted, 
Leaf-sheath flagella very slender, filiform, finely aculeolate throughout and distinct- 
ly callous at their insertion. Leaves short, about 30 cm. long, not cirriferous; 
petiole short (2 cm.), subtrigonous, aculeolate; rachis  subtrigonous,  obsoletely 
bifaced above, armed beneath with scattered claws; leaflets few (13 in all in the 
few: leaves seen), inequidistant, clustered in about 4 remote fascicles of 3-4 each, 
generally disposed in opposite geminate divaricate pairs, the two near the base 
not opposite, spreading and not deflexed, the two of the terminal pair connate 
up to about their middle, all of about the same size and form, the largest 10-11 
em. long, 2°5 cm, broad, glabrous, papyraceous, rigidulous, of about the same colour on 
both surfaces, almost shining above, quite devoid of any kind of hairs, bristles 
or spinules, elliptic-lanceolate or ovate-elliptic or broadly oblanceolate, acute at the 
base, rather suddenly subulately acuminate into a naked and not bristly apex; 
furnished with 5 very slender costz, of which the central is slightly stronger than 
the side ones, all naked on both surfaces, margins acute, smooth, transverse 
veinlets distinct, much  interrupted.— Other parts unknown. All parts acquire a 
brown colour in drying. 
Hasitat.—Dutch New Guinea; at Ramoi (Beccari P. P. No. 421) 
OsseRvations.—This seems related to C. javensis. The broad, grouped, opposite, 
divaricate leaflets quite hairless or spineless on the nerves, on the margins and 
at the apex, distinguish this species from any other of the group. 
Prate 44.—Calamus papuanus Bece, An intermediate portion of the adult 
plant from P. P. No. 421 in Herb. Becc. 
35. CALAMUS FILIPENDULUS Becc, in Hook. f. Fl. Brit. Ind, vi, 443, and in 
Rec. Bot. Surv. Ind. ii, 202. 
Description.—Scandent; rather slender. Sheathed stem 1~1°5 cm. in diam. Leaf- 
sheaths mottled when young, gibbous above, armed with scattered or slightly 
confluent, laminar, short and rather broad brown spines, which are 5-10 mm. long or 
even shorter and subtuberculiform, slightly deflexed, broad and concave beneath at the 
Leaf-sheath flagella filiform and very slender. Leaves not cirriferous, 
‘5=1 m. long, with a very variable petiolar portion (from 4 to 30 cm. in 
length), smooth or strongly aculeated, at the margins and on the back, flattish 
or superficially channelled above; rachis more or less armed, mainly along the 
middle, with scattered claws; leaflets very few (5-8 in all), large and broad, in- 
equidistant (the tw^ of the terminal pair not differing from the others, but 
