Heritiera.] STERCULIACEAE. 103 



Seeds not winged ; follicles usually coriaceous and oblong, open- 

 ing when mature; leaves simple lobed or digitate 3. Sterculia. 



Follicles membranous, opening long before maturity ; leaves pal- 



mately lobed 4. Firmiana. 



Flowers bisexual ; petals present, often deciduous : 



Staminal tube adnate to the gynophore, forming a more or less elon- 

 gated stalk : 



Fruit a membranous, inflated capsule ; trees with cordate 5-nerved 



leaves Kleinhofia. 



Fruit of straight or spirally twisted follicles ; seeds not winged ; 



shrubs 5. Helicteres. 



Fruit a woody loculicidal 5-valved capsule ; seeds winged ; trees or 



shrubs, usually mealy 5. Pterospermum. 



Staminal tube distinct from the carpels and enclosing them : 



Staminal tube elongate, bearing the stamens on its outer surface in 



a cone ; no staminodes 7. Eriolaena. 



Staminal tube short, divided into 5 teeth bearing the anthers; 

 petals marcescent ; no staminodes : 



Styles or stigmas, cells of ovary and valves of fruit 5 each 



8. Melochia. 

 Style or stigma and cell of ovary 1 each, capsule 2-valved, 



1-seeded 9. Waltheria. 



Staminal tube short, bearing 5 or 10 staminodes with solitary or 

 clustered anthers between them : 

 Petals deciduous : 



Trees with 10-15 fertile anthers : 



Leaves scabrid or glabrous above, pubescent beneath ; anthers 



15, in threes ; fruit muricate, many-seeded 10. Guazuma. 



Leaves glabrous on both sides ; anthers 10, single ; fruit 



rugose, seed 1 11. Leptonychia. 



Climbing shrubs or herbs with 5 fertile anthers ; fruit bristly, 



5-valved, valves 1-seeded 12. Buettneria. 



Petals persistent : 



Leaves ovate or lanceolate, obtuse ; bracteoles persistent ; 



anthers 5 13. Melhania. 



Leaves tapering from the truncate base to the caudate tip ; 

 bracteoles caducous ; anthers 15 Pen tapetes. 



1. Heritiera, Ait. 



Trees. Leaves simple, peltate-scaly beneath, penninerved or 

 3-nerved. Flowers small, 1- or 2-sexual, in axillary panicles. 

 Calyx 5-toothed or 5-fid. Petals 0. Staminal column slender, 



