pandane.®. (I. B. Balfour.) 
395 
Order CIV. PANDANEiE. 
(By Dr. I. B. Baleotjr.) 
Flower dioicous, on simple or branching spadices, enclosed by per- 
sistent or deciduous spathes. Perianth 0. Stamens many, the filaments 
often conn ate i anthers 2-celled, basifixed, dehiscing longitudinally. Ovary 
1- or many-celled ; ovules in our genus solitary, on a parietal placenta ; 
stigmas sessile or stalked, distinct. Fruits drupaceous, many aggre- 
gated into a head ; endocarp bony. Seeds oblong ; testa membranous ; 
embryo straight, basal, in abundant fleshy albumen. — Trees or shrubs, 
usually with a branching stem supported by strong adventitious roots 
and simple long narrow firm spiny leaves imbricated in three spiral 
rows. Di8trib. Tropical regions of the Old World. Species 70. 
1. PANDANUS, Linn. 
Male, Spadix compound, thyrsoid, borne at the extremity of a 
branch, the lateral spikes each in the axil of a leafy often-coloured 
spathe, which is often longer than the spike. Stamens many, usually 
connate in bundles. Female. Spadix usually simple, borne at the 
end of a branch, surrounded by many spathes. Ovaries, fruit, and 
habit as described under the order. 
Heads solitary. 
Drupes typically 1 -celled. 
Heads erect; drupes l^-l-i in. long 1. P. sph^eroideus. 
Heads pendulous ; drupes under an inch long . . . 2. P. microcarpus. 
Drupes typically 2- or many-celled. 
(Jells of drupe 2 3. P. Hornei. 
Cells of drupe 3 or more, rarely 1-2. 
Drupes greatly compressed, with carpels in a single 
row. 
Apex of drupe deeply cleft between the promi- 
nent stigmas 4. P. Barklyi. 
Apex of drupe shallowly cleft between the im- 
mersed stigmas 5. P. conoideus. 
Drupes not greatly compressed, with carpels not 
in a single row. 
Stigmas flat; free portion of the drupe nar- 
rowed upwards. 
Stigmas less than ^ in. broad, sessile. 
Endocarp basal 6. P. Vandermeeschii. 
Endocarp medial * P. utilis. 
Stigmas above in. broad, sessile. 
Stigmas not placed in a depressed areole . 7. P. pyramidalis. 
Stigmas placed in a depressed central 
areole. 
Mesocarp spongy when dry. 
Drupe free in the upper sixth or eighth 8. P. heterocarpus. 
Drupe free in the upper third or quarter 9. P. tenuifolius. 
Mesocarp laminated when dry . . . . 10. P. Iceryi. 
