PLECTOCOMIA. 21 
* Female spikelets composed of 3—5. flowers. Fruit 25—28 mm. 
in diameter. Male flowers 10—11 mm. long, sessile. 
I. P. elongata Mart.—Java and Sumatra. \ 
P. elongata v. bangkana Becc. 
Bangka. 
A smaller. plant. 
** Female spikelets composed of 5—9 flowers. Fruit 15—16 mm. 
in diameter. 
2. P. Griffithii Becc. 
Malay Peninsula, Singapore. 
*** Male spikes larger than in the two preceding species and 
with larger spathels (7 cm. long) Male flowers also larger, 
12—15 mm. long, distinetly pedicellate. Female flowers and 
fruit unknown. 
3. P. macrostachya Kurz. 
Lower Burma. 
II. Female flowers having the ealyx tapering to a narrow base which 
later forms a conspicuous pedicel to the fruit. The calyx 
of the male flowers glabrous at the mouth. 
* Female flowers 12 mm. long (not including the stigmas), having 
a scabrid pedicel and calyx ; the calyx before and during the 
anthesis suddenly expands into a eupular 3-toothed limb. 
Female flowers (not including the stigmas) 19 mm. long. Fruit 
hairy. Upper leaves having lanceolate, acute, or shortly acu- 
minate leaflets, green on both surfaces. 
4, P. Muellerii Bl.— Borneo. 
** Female flowers 10 mm. long, having the calyx smooth and 
glabrous, parted before and during the anthesis into 3 ovate 
segments. Ovary densely hairy. Upper leaves having elongate- i 
lanceolate or ensiform very long-acuminate leaflets, green above, 
rusty-furfuraceous beneath. 
5. P. billitonensis Becc— Billiton. 
*** Female flowers 18—20 mm. long, having the calyx tapering 
to a long and narrow pedicelliform lower part, and the limb 
3-parted. Leaflets lanceolate, acuminate, destitute of any kind 
of indumentum underneath. Fruit globular depressed, mammillate, 
smooth, the scales not fimbriate. 
6. P. Elmerii Becc.—Mindanao. 
B. Calyx of the male flower shallow, trigonous or 3-toothed; of the female 
flower thinly cartilaginous, cupular, not thickened at the base. Fruiting 
perianth explanate. | 
