CLVI. PALMACE.E 
l8 
\Ptychor aphis. 
slender spikes. Flowers in pairs, one male, one female, or males at 
tip, females at base. Males, sepals ovate or lanceolate. Stamens 6. 
Drupe ellipsoid. Seed ellipsoid, grooved on one face, ruminate. 
Species 2, endemic. 
Rachis thick; dense-flowered; petals ovate . . (i) P, singaporensis 
Rachis slender; flowers scattered; petals lanceolate (2) P. longiflora 
(i) P. singaporensis Becc. Ann. Jard. Bidtenzorg. ii. 90, t. 196; 
Ricll. Mat. ii. 48. 
Stems several, 6 to 12 ft. tall, i in. through, black, ringed. 
Leaves 4 ft. long; leaflets 12 in. long, -5 in. wide; petioles 3 ft. long. 
Spathe 6 in. long, inner one woolly. Panicle 6 in. long. Spikes 
•12 in. thick, 3 to 7. Flowers numerous and close. Males, sepals 
ovate orbicular. Petals larger, ovate acute, white or yellow. 
Females, bract transversely oWong. Sepals ovate truncate gibbous. 
Drupe red pulpy, *5 in. long. Hab. South of the peninsula in 
woods. Singapore, Taiiglin; Sungei Buluh; Teas; Changi. 
Johor, Gunong Pulai (Hullett). Dinclings, Lumut (Curtis). Native 
name : Rintin or Kerintin. Use : The stems make beautiful black 
walking-sticks. 
{2) P. longiflora Ridl. Joitrn. Roy. As. Soc. S. Br. 41, p. 32; 
Mat. ii. 148. 
Habit and stems of P. singaporensis. Leaves 3 ft. long; leaflets 
40 pairs, 18 in. long, -5 in. wide. Inflorescence of 4 or 5 branches, 
6 to 7 in. long. Flowers scattered, 21 on a branch. Males with 
2 orbicular gibbous bracts at base. Sepals orbicular, fringed. Petals 
lanceolate blunt, much longer. Female bract small. Sepals ciliatc. 
Hah. Johor, on the top of Gunong Banang, Batu Pahat (Ridley). 
This is very distinct from P. singaporensis in its slender branched inflor¬ 
escence with distant flowers and lanceolate petals. 
10. ARENGA, Labill. 
Large unarmed palms, stems solitary or several. Leaves very 
large, pinnate, sheath breaking up into black fibre; leaflets very 
numerous, linear, narrowed and auricled at base, tips truncate 
notched. Inflorescence of very numerous long pendent spikes, 
unisexual, produced when the tree is adult from the upper axils 
downwards alternately male and female. Spathes numerous, short, 
persistent on peduncle. Male flowers large. Sepals orbicular. 
Petals longer, oblong coriaceous. Stamens very numerous. Fe¬ 
males subglobose, oblong or flat at top. Sepals sub-orbicular; 
petals ovate. Ovary 3-celled; ovules 3. Fruit 2- or 3-seedcd. 
Seed plano-convex, large. Albumen equable. Species 10. Indo- 
Malaya, Formosa, Australia. 
Stem stout, covered with fibre; spikes 3 to 4 ft. long; 
petals oblong, i in. long, violet . . . . (1) A. saccharifera 
Stem more slender, not covered with fibre; spikes 
1-5 ft. long; petals ovate oblong, -5 in. long, pink (2) A. Westerhouti 
