226 Materials for a Flora of the Malayan Peninsula. 



Perak : Chanderiang (King's Collector 5811). In small water holes 

 with the top of the fruit just above water. Endemic. I suppose this 

 is the plant Martelli intended by his description or rather diagnosis, 

 but he does not give the locality or number and his diagnosis is very 

 short. 



8. P. HELICOPUS, Kurz. Miq. Ann. Mus. Lugd. Bat. II. 54, t. II. 



Stems branched rather irregular and chiefly at the base 15 to 20 feet 

 tall 3 inches through, ringed with leafscars thorny dark red brown be- 

 coming purplish grey. Leaves glaucous persisting only at the top of 

 the stem, linear long acuminate 6 feet long, 3 inches wide, bases red or 

 orange, terminal half of the leaf deflexed, spines black short and strong 

 erect on base of leaf edges, recurved on midrib. Male inflorescence 

 long. Bracts lanceolate long acuminate white fragrant, 10 to 12 inches 

 long 1 inch wide, narrowed at both ends, spikes dense 9 inches long f 

 inch through. Stamens connate in bundles, the filaments forming a 

 hairy oblong process truncate at the top. Anthers linear with a short 

 point. Female, syncarp solitary 2£ inches long on a slightly flexuous 

 nodding peduncle 9 inches long. Styles long in proportion to the ovar- 

 ies. Fruit cylindric woody, apex and base broad blunt 5 inches long 3 

 inches through. Drupes narrow i inch through, style single short 

 slender hardly i inch long golden brown. 



Johor : Sungei Tebrau, Kota Tinggi (Ridley 5002); Selangor: 

 Rawang (Ridley 7655). Distrib. Sumatra, Banka. Native names 

 " Resau." This plant forms dense masses for miles in rivers, often 

 blocking the waterway. The fruit is used by the natives of Sumatra 

 for baiting fish traps. 



9. P. Scortechinii, Martelli I.e. 302. Apparently a dwarf plant 

 2-4 feet tall, stem i inch through, covered with the persistent sheaths. 

 Leaves linear lorate caudate, 9 inches long, 1 inch across, main nerves 

 inconspicuous, secondary nerves few, base armed with rather large red 

 tipped thorns, tip and tail with more numerous short ones, middle 

 portion almost or quite thornless. Male inflorescence, bracts broadly 

 lanceolate, acute, unarmed, papery ribbed 2^-2 inches long, i inch wide. 

 Flower spikes cylindric 3 inches long, i inch through. Stamens con- 

 nate at the base with extremely short bulbous filaments much shorter 

 than the oblong stamens. Female syncarp solitary on a peduncle, 2 

 inches long, oval 1 inch long, 4 inch through. Drupes prismatic oblong, 

 tip cuneate, pyramid-shaped. Styles long setiform acuminate shining. 



Perak : Asam Kumbang, (Wray 1939, 3259) ; Larut Hills (King's 

 Coll. 3557). Endemic. 



10. P. JOHORENSis, Martelli, I.e. 302. Loaves vory long linear 

 rather firm textured, ending in a very long blonder tail, main nerves 

 indistinct, thorns rather large, distant, except at tho tip, 3 feet long, 1 

 inch wide, the very slender triquetrous tail nearly a foot long. Female 



