Orlovich, Drinnan & Ladiges, Floral development in the Metrosideros group 
695 
Fig. 3. (left) Lophostemon confertus. a, median longitudinal section through a young flower bud 
at the stage of stamen initiation. By this stage the gynoecium (G) is well developed. K - sepal, 
P - petal, PSB - pre-staminal bulge (x 91); b, median longitudinal section through a mature 
bud (x 19.5); c, transverse section near the base of a single stamen fascicle after anthesis. 
Stamen filaments diverge from the inner side of the fascicle only. P - petal (x 37); d, section 
through the upper half of the same fascicle as c. The fascicle is split into two at this level. The 
epidermis is continuous around each half, indicating that the split is not a result of tearing 
during filament extension or specimen handling (x 37); e, cleared stamen fascicle showing 
individual filament vascular traces (arrows) (x 23). (a,b from AND 481; c-e from DAO 195). 
Fig. 4. Lophostemon suaveolens. a, mature half flower (x 11.6); b, stamen fascicle drawn from the 
back to illustrate the bifid nature of the fascicle (x 18.5). (from DAO 233). 
