98 cxLvii. PALMJE (weight). [Areca. 



Genera about 140 j species about 1200, dispersed throughout the tropics and 

 extending a short distance outside. 



Tbibe I. Arecese. — Leaves pinnatisect ; segments distinct or confluent into an 

 entire, bifid or laciniate lamina, redMplicate in vernation. Flowers monoecious or 

 dioecimis. Seeds vmMlicate ; raj)he ventral / emhryo dorsal. 



Ovule erect. Albumen ruminate . . . .1. Aeeca. 

 Ovule pendulous. Albumen homogeneous. 



Stamens 6 2. PODOCOCCUS. 



Stamens many 3. ScLEEOSPEEiiA. 



Tribe II. Pboeniceae. — Leaves pinnatisect ; segments acuminate, induplicate 

 in vernation. Spadices inter foliaceous, dioecious ; spathe 1. Carpels 3, one only 

 ripening: stiama terminal. Seed deeply grooved ventrally, um.hilicate ; embryo 

 dorsal. 



The only ^enus 4. Ph(enix. 



Teibe III. Xiepldocaryeae. — Leaves pinnatisect {in the Tropical African 

 genera) ; segments reduplicate in vernation. Spadices terminal or axillary ; spathes 

 many or none. Flowers hermaphrodite or unisexual. Ovary entire, more or less 

 perfectly S-cellsd. Fruit clothed with shining retrorsely im,brieate scales. Seeds 

 umhilicate • raphe dorsal ; embryo ventral. 



Stems erect 5. Raphia. 



Stems climbing. 

 Poly carpi c. 



Spathes present. 



Ovary imperfectly 3-ceIled . . . .6. Calamus. 

 Ovary perfectly 3-celled . . . .7. 0^"COCALAM:^s. 



Spathes none 8. Eeemospatha. 



Monocarpic ' . • .9. Ancisteophtllfm. 



Teibe IV. Scrasseae. — Leaves fan-shaped / segments reduplicate in vernation. 

 Spadices interfoUaceous, dioecious • spathes many, sheathing. Ovary entire, 3- 

 celled ; ovules ascending. Seed with a diffuse hilum. 

 Albumen homogeneous. 



Male flowers many in pits on the spadix . . .10. Boeassus. 



Male flowers solitary in pits on the spadix . .11. Htph^ne. 



Albumen ruminate 12. Medemia. 



Teibe V. Cocoineae. — Leaves pinnatisect ^ segments reduplicate in vernation 

 Spadices interfoUaceous • spathes 2 or many. Flowers {a,t least on the loicer part 

 of the spadix) in threes, the central female, the lateral male. Ovary 1—7-celled. 

 Fruit 1-7 -celled : stigm.as terminal ; endocarp with 8-7 pores. Seed adhering to 

 the endocarp / hilum diffuse ; embryo opposite a pore of the endocarp. 



Male flowers sunk in pits on the spadix. Pericarp 



spongy . 13. El^is. 



Male flowers superficial. Pericarp thick, fibrous . 14. Cocos. 



1. ABECA, Linn.; Benth„ et Hook. f. Gen, PL iii. 883. 



Male flowers minute, solitary or geminate on the spadix-branches. 

 Sepals 3. Petals 3, much longer than the sepals, broadly ovate. 

 Stamens 3 or 6. Fem-ale flowers much la.rger than the male, solitary 

 towards the bsuse of the spadix-branches. Sepals and petals usually 



