97 



having the flowers inserted at an angle of about 45 (not horizontal), and in 

 its larger fruit. 



C. arfakianus is characterized by its slender stem, by the cirriferous leaf- 

 sheaths, and short non-cirriferous leaves, with a few narrowly lanceolate 

 leaflets approximated into a few (three) distant groups; the two terminal 

 leaflets free, or but slightly united at their bases ; by the very slender and 

 long filiform spadices, not very dissimilar in the two sexes, and by the ovoid- 

 elliptical, suddenly-beaked fruit, having the seed with equable albumen. 



CALAMUS ARFAKIANUS var. IMBERBIS Becc. 



Vaginis inermibus, in ore ininiine barbatis ; ocrea brevi truncata ; segmentis 

 interdum obsolete 3-costulatis. 



Differs from the type in having the leaf-sheaths unarmed and strongly 

 striate longitudinally, and not bearded at their mouths ; in the ocrea being 

 short, truncate, and marcescent, and also without bristles ; the leaflets in 

 this variety have the side nerves more distinct, and at times appear almost 

 3-costulate. 



Hob. Arfak Mts., S.W. ridge, leading to Angi lakes ; scrambling in 

 forest at 7000'. ? . Dec. 6143. 



CALAMUS PRATTIANUS Becc., sp. nov. 



Gracilis, scandens, caudice circ. 1 cm. diam. ; vaginis flagelliferis, spinis graci- 

 libus subsetiformibus densiuscule obsitis, in ore dense longiuscule hispido-barbatis ; 

 foliis non cirriferis, brevibus ; petiolo brevissimo ; segmentis paucis, inaequidistantibus, 

 saepe utrinque geminatis (non per greges remotos approxiinatis), anguste lanceolatis, 

 subulato-acuminatis, chartaceis, fimiis, unicostatis, utrinque nudis vel superne in 

 costa media et in nervis secundariis duobus inconspicue remoteque spinulosis ; 

 segmentis intermediis 15-18 cm. longis, 20-25 mm. latis, superioribus sensim 

 minoribus, duobus terminalibus basi liberis vel breviter unitis ; spadice c? gracillimo, 

 elongato ; inflorescentiis partialibus paucis, brevibus, remotis, spicas paucas erecto- 

 patulas ferentibus ; spicis majoribus 3 cm. longis, flores 13-15 utrinque ferentibus, 

 remotiusculis, spathellis breviter lateque infundibularibus, truncatis. Caetera desunt. 



Scandent and very slender. Sheathed stem about 1 cm. in diam. Leaf- 

 sheaths flagelliferous, not or but slightly gibbous above, rather densely 

 covered with scattered or slightly confluent bristle-like spines, becoming 

 closer and considerably longer and more hair-like near the mouths of the 

 same leaf-shaths and their ocrese, which latter are very short and on account 

 of these bristles look densely bearded. Leaf-sheath flagella very slender, 

 long, and armed irregularly with very minute scattered claws. Leaves non- 

 cirriferous, short (the few seen by me are 35 cm. long); petiole very short, 

 or almost obsolete ; rhachis fugaciously rusty-t'urfuraceous, armed with a 

 line of solitary, rather long-tipped claws. Leaflets few, about 16 in all ; 

 very irregularly set, usually approximate in pairs on each side of the rhachis, 

 with irregular vacant spaces of rhachis interposed ; they are narrowly 



