The germination responses of Tibouchina moricandiana (DC) Baill. were tested under different temperature (20, 25, 30, 35 and 30-20ºC) and light regime (8 hours photoperiod or darkness). A morphological study of the post-seminal development was carried out to establish descriptions of normal and abnormal seedlings. The optimun temperature for seed germination was 30ºC; 20 and 35ºC caused a decrease of percentage and speed of germination; they did not germinate in the dark and required consecutive days of light exposure to achieve maximun percentage. The seedlings to the phaneroepigeal type, which is characteristic from pionner species of large gaps.
Germination; temperature; light; seedling