The investigation was carried out at the CIEFOR Puerto Almendra – FCF - UNAP facilities, San Juan Bautista district, Maynas province, Loreto region. The objective was to determine the degree of association between diameter and total height in plants of Cedrelinga cateniformis (Ducke) Ducke "tornillo" and Osteophloeum platyspermum (A. DC.) Warb. “cumala blanca” in natural forest. Puerto Almendra, Loreto, Peru- 2021. The variables used were the diameter and total height of the species under study; sample 1 presented Class 1 (10cm < 20 cm) with 10 individuals; class 2 (20cm < 30cm) with 5 individuals; class 3 (30 < 40cm) with 5 individuals; class 4 (40cm < 50cm) with 5 individuals and class 5 (? 50cm) with 5 individuals; in total there were 30 individuals; for sample 2 the individuals were chosen randomly. The results indicate that there is a good to excellent relationship between dia...