15. Worldwide distribution but more in tropical areas
Economic importance:
Cinchona- source of quinine used to treat
malaria
Coffea arabica - source of coffee
Pausinystalia johimbe- source of sexual stimulant
(yohimbine)
Timber trees
Fruiting plants
Dye plants
Ornamental cultivar
16. Trees, shrubs, lianas, or herbs
Simple, entire, usually decussate leaves
Connate stipules, often with mucilage-secreting colleters
Inflorescence usually a cyme
Flowers usually bisexual
Perianth dichlamydeous, 4-5 merous, calyx absent in some
Androecium often 4 5-merous
Ovary usually inferior (rarely superior)
Often with an apical nectariferous disk, ovules with a funicular
obturator,
Fruit either a berry, capsule, drupe, or schizocarp.
K (4-5) [0] C (4-5) [(3,8-10)] A 4-5 [3,8-10] G (2) [(3-5+)], usually inferior,
rarely superior.