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of the PSB (Fig. 5i) and later at the outer edges (Fig. 5j). The PSB and free filaments 
elongate to form the stamen fascicle. The groove in the PSB manifests as a cleavage 
in the bifid fascicle (Fig. 5k). 
Lophostemon lactifluus (F. MuelL) Peter G. Wilson & J.T. Waterhouse 
Flowers of L lactifluus have five antepetalous stamen fascicles (Fig. 6a). Unlike L. confertus 
and L. suaveolens, the fascicles are not obviously bifid (Fig. 6b) in the limited material 
available for this species. The petal primordia are initiated between the sepals on the 
flank of the invaginating floral tube (Fig. 7a). Stamens are initiated on a PSB opposite 
each petal (Fig. 7b). The first stamens are initiated in the centre of the PSB and later ones 
Fig. 1. Lophostemon confertus. Mature half flower. (x5.7). (from DAO 195). 
