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CAIN, DE OLIVEIRA CASTRO, PIRES, AND DA SILVA 



Table 11. The leading tree species on a sample plot of equatorial rain forest at 



Mucambo, arranged according to their "importance value indices," or the sum of 



relative densities, frequencies, and dominances 



Family 



Importance 

 value index 



Vochysia guianensis Vochysiaceae 23.42 



Eschweilera odora Lecythidaceae 21.61 



Goupia glabra Celastraceae 15.14 



Protium trifoliolatum Burseraceae 13.08 



Echweilera krukovU Lecythidaceae 12.90 



Protium sp.? "Breu mescla" Burseraceae 9.29 



Tovomita stigmatosa Guttiferae 6.45 



Iryanthera juruensis Myristicaceae 6.38 



Protium nodtdosum Burseraceae 6.33 



Trattinikia sp.? Burseraceae 5.62 



Vantanea cupularis Humiriaceae 5.54 



Anacardium giganteum Anacardiaceae 5.03 



Protium carnosum Burseraceae 5.00 



V ouacapotia americana Leguminosae 4.67 



Theobroma subincana Sterculiaceae 4.63 



Piptadenia suaveole^is Leguminosae 4.26 



Sapotaceae, Gen. sp.? Sapotaceae 4.20 



Parkia pendula Leguminosae 4.05 



Micropholis acutangida Sapotaceae 4.04 



Steradia pruriens Sterculiaceae 4.01 



Osteophloeum platyspermum Myristicaceae 3.40 



Protitim polybotryum v. blackii . . . Burseraceae 3.30 



Chimarrhis turbinata Rubiaceae 3.29 



Protium puncticulatum Burseraceae 3.27 



Eschweilera blanchetiana Lecythidaceae 3.26 



Pourouma myrmecophila Moraceae 3.24 



Poraqueiba guianensis Icacinaceae 3.17 



Pithecolobium jupunba Leguminosae 3.15 



Helicostylis peduncnlata Moraceae 3.11 



Tapura singularis Dichapetalaceae 2.90 



Caryocar microcarpum Caryocaraceae 2.82 



Thyrsodium paraensis Anacardiaceae 2.72 



Qnalea albiflora Vochysiaceae 2.66 



Ptychopetalum olacoides Olacaceae 2.63 



Couepia hoffmanniana Rosaceae 2.61 



