> 
Flora of the Malayan Peninsula. 333 
wide ; stamens 3, anthers obovate, 4-valvate, a little longer than the 
oblong filaments. 
PrrRak : Government hill, March, Ridley 2732. 
Perhaps the ¢ of P. Zuccarinii, C. DC. in Prodr. XVI. 1, 365. 
60. PrreR arGyRitTss, Ridl. MSS. ex C. DC. in Records Bot. Surv. 
Ind. VI. 25 (1912). Branches glabrous, drying brown, the spiciferous 
up to 15 mm. thick; collenchyma continuous, sparsely libriform; a 
single central lysigenous canal. Leaves moderately petioled, glab- 
rous ; limb firm when dry, minutely pellucid-dotted, up to 18 cm. 
long and to 6 cm. wide; oblong-ovate, acutely acuminate, the base 
rounded and slightly inequilateral; 7-plinerved, the central nerve 
emitting 2 ascendent nerves, the uppermost from 15 mm. above the 
base and having on each side of it 2 nerves free from the base, the 
internal ascendent the external subascendent much thinner and 
shorter than the others; petiole 10 mm. long, 2 mm. of which be- 
tween the sides of the limb, sheath prolonged up to the middle of 
thepetiole. Peduncleglabrous,25mm.long. Spike: 3 8cm.longand 
3 mm. thick when nearly flowering; rhachis hirsute; bract glabrous, 
obovate, adnate to the rhachis, up to 1°5 mm. long; stamens 2, an- 
thers reniform, 4-valvate, filaments of same width as the anthers. 
SELANGOR: Gua Batu, December, Frdley 8176; Ginting Bidai, 
May, Ridley 7611. 
61. PiezeR cLyPEaTuM, Wall. Cat. 6655 A and B (1828). Stem 
creeping, rooting from the nodes; collenchyma continuous, mainly 
libriform, a single row of intramedullar bundles; a single central 
lysigenous canal. Leaves very shortly petioled; limb rigid-mem- 
branous when dry, pellucid-dotted, glabrous above, pubescent 
underneath, round or ovate-rounded cordate at the base, 11:°5—15 
em. diam. Spikes unknown. C. DC. in Prodr. XVI. i. 378; 
Hook. f. Fl. Br. Ind. V. 96 and 537. P. obtusissimum Mig. Syst. 
Pip. 337. P. manillanum, Mig. |. c. 339. 
PENANG, SINGAPORE: Wallich.—Distr1rp. Assam, Manilla. 
Sect. IJ.—Muxtpera, Hook. f. Fl. Br. Ind. V. 79, emend. 
(Sect. ScuizonmPHROS, C. DC. in Prodr. XVI. 1. 24). 
Spikes oppositifolious. Bracts adnate to the rhachis except at 
their lower and upper ends where they are connate into a receptacle 
containing stamens or ovaries. Flowers unisexual. Stamens 2—10 
