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A review of dipterocarps - Center for International Forestry Research

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Biogeography and Evolutionary Systematics <strong>of</strong> Dipterocarpaceae<br />

Figure 1. Distribution <strong>of</strong> Dipterocarpaceae (adapted from Meher-Homji V.M. 1979).<br />

x<br />

x<br />

xxx<br />

x x x x<br />

Asian sub-division Dipterocarps<br />

Their presence in Seychelles and Andaman<br />

Marquesia<br />

African:<br />

Monotes<br />

Shorea robusta<br />

Fossils<br />

Doubtful fossils<br />

S. American Pakaraimaea<br />

New genus: Pseudomonotes tropenbosii<br />

Monotoideae in Africa and South America. The position<br />

<strong>of</strong> the African and South-American taxa relative to the<br />

Asian group varies with authors (Table 1).<br />

Consequently the family contains either 15, 16 or<br />

19 genera (Table 2) and 470 to 580 or more species<br />

(plus the newly found South American taxon, the<br />

monospecific genus called Pseudomonotes<br />

tropenbosii which has been attributed to the<br />

Monotoideae by its authors (Londoño et al. 1995,<br />

x<br />

x x<br />

x<br />

x x<br />

x x<br />

x x<br />

x<br />

Ã<br />

+<br />

X X X<br />

S<br />

F<br />

D<br />

▲<br />

<br />

Ã<br />

Morton 1995). During the past decade the numbers have<br />

reduced with the increase in collections and systematic<br />

expertise. However, uncertainties remain in Asia and<br />

Africa, underlining the necessity <strong>of</strong> an exhaustive and<br />

detailed <strong>review</strong>.<br />

Diversity <strong>of</strong> opinions also exists <strong>for</strong> generic<br />

divisions, especially with the genus Shorea and the group<br />

<strong>of</strong> genera Vatica and Cotylelobium. A synthetic<br />

classification is thus needed. It could be produced from<br />

6

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