€. dioicus | BECCARI MONOGRAPH OF THE GENUS CALAMUS. 195 
OsseRvaTIONS.—Distinguished ‘amongst the Papuan species by the cylindrical, 
smooth or sparingly spinous leaf-sheaths, which gradually pass into the petiole, and by 
the leaflets which are not numerous, narrowly lanceolate with only the mid-costa acute 
and 2-3 secondary nerves on each side of it quite smooth (also at the margin), and 
approximate into 4-5 distant groups. 
PLATE 49.—Calamus interruptus Becc. Portion of the sheathed stem with an entire 
flagellum and the base of a leaf; and intermediate portion of a leaf seen from the 
under surface (on the left lower corner); the apex of the same leaf, from P. P. 
No. 420. 
CALAMUS INTERRUITUS var. DOoCILIS Becc. Malesia ii, 60, 
C. docilis Becc. in Rec. Bot. Surv. Ind. ii, 904. 
Description.—It differs from the type only in the quite unarmed leaf-sheaths. 
Hasitat.—North-Western New Guinea; at Ramoi, with the type Beccari P. P. 
No. 418. 
Prate 50.—Calamus interruptus Var. docilis Becc. Portion of the sheathed stem 
with an entire flagellum; an intermediate portion of a leaf (upper surface); the apex 
of the same leaf, from P. P. No, 418 in Herb. Becc. 
39. Catamus piorcus Lour. Fl. Cochinchin. i, 210; edit. Willd, i, 262; Lam 
Encycl. vi, 366; Roem. et Schult. Syst. Veg. vii, II. 1322; Mart. 
Hist, Nat. Palm. iii, edit. I. 213 and p. 842; Kunth Enum. Pl iii, 
213; Walp. Ann. iii, 491 and v, 832; H. Wendl. in Kerch. Les 
Palm., 236.; Bece. in Rec. Bot. Surv. Ind. ii, 201. 
Description.—Very slender, scandent. Sheathed stem 4-5 mm. in diam.; naked 
canes 2:5 mm. in diam. Leaf-sheaths flagelliferous, gibbous above, hispid or bristly near 
the mouth and densely covered with very unequal, slender, straight, slightly deflexed 
spines which are 1-5 mm. long and rest on a broad base. Ocrea 15-20 mu, 
long, dry, «membranous, bristly-spinulous on the ventral side, later lacerated and 
deciduous.  Leaf-sheaíh flagelia very slender, filiform, with a large axillary callus 
at the base, and with the lowest spathe flattened and spinulous. terete upwards 
and very finely clawed all round. Leaves short, 25-40 cm. long, not cirriferous, 
petiole very short or almost obsolete; rachis trigonous, clawed throughout beneath 
leaf-sheaths, petiole and rachis fugaciously covered with very dark scurf; leaflets 
very inequidistant, more or less distinctly grouped, 8-11 in all, of which 4 are 
very approximate at the summit with the two terminal free at the base and other 4 
inserted very near the mouth of the sheath and kept. in a divergent or deflexed 
position by a distinct basal cailus; the intermediate ones opposite when there are 2; if 
3, one straggling; all are very narrowly lanceolate, 10—20 cm. long, 11-15 mm, 
broad, narrowing to the base and acuminate to a bristly-penicillate apex; very finely 
3- or sub-5-costulate; the coste acute and all more or less bristly-spinulous above, 
the mid-costa scarcely more distinct than the side ones, beneath all superficial and 
smooth; secondary nerves very faint; transverse veinlets much interrupted and not very 
crowded; margins finely and appressedly spinulous, sometimes bordered by a polished 
Ann. Rox. Bor. Garp, CarcurTA Vor. XI. 
