Protium obtusifolium (Bois Colophane Bātard, Bois Colophane Rouge, Bois de Compagnie).


 

 The tree has a relatively expanded top and may reach up to 20 m in height with a trunk that can have a diameter of about 75 cm. The bark is grayish in colour, often cracked from which a clear, sticky and turpentine-smelling liquid exudes. The small branches are strong, smooth and have a pale colour.

 The leaves are grouped at the furthest extremities of the branches, are pinnately arranged and are very rarely arranges in a unifoliar manner. The petiole is 2 to 7 cm long, while the petiolules are 0.8 to 1.5 cm in length and may reach a maximum of 2.5 cm.

 The leaf lamina is dark green, shiny and usually changes to a bright red colour when dying. The shape is more or less ellipsoidal or obovoid, measures 5 to 10 cm by 2.5 to 6 cm and the leaf is quite tough. The leaf margin is entire with a rather rounded tip and a cuneiform base.

  Inflorescence is prominent, axillary, paniculate and grouped at the extremities of the leaflets. It can be as long as 15 cm, with the flowers arranged in dense cymoses. The flowers are numerous, bear pedicels that measure around 2 mm in length and bear small triangular bracts. The sepals too are triangular in shape and in the male flowers measure 0.5 mm while being slightly longer in the female flowers. The sepals also possess trichomes on their dorsal side.

  The oblong petals are 1.5 to 2 cm by 0.6 to 1 mm and bear trichomes on the dorsal surface as well. 10 stamens are present and measure between 1 to 1.5 mm in the male flowers. The staminodia of the female on the other hand, are much longer than those in the males. The stigma has 5 rather hemi-spherical lobes with a sterile ovary in the male flowers.

  The fruit when mature resembles a capsule, but when young looks like a drupe. It becomes reddish green with a rather tough mesocarp and measures 1.5 to 2 cm in length. Usually 1 to 3 or a maximum of 4 asymmetrical or 5 symmetrical grains are formed. These are globosely shaped. One peculiarity about the grains is that these attract birds.