Fig. 107. 
Prostanthera spinosa. 
F. v. M. in trans. Phil. Soc. Viet. i. 48 (1854). 
1, flower with stalklet and bractlets, many times enlarged; 2, corolla 
much magnified, open to show the position of the stamens; 3, anthers 
much enlarged ; 4, pollen-grain, 300 times diametrically magnified; 5, 
fruitlets, the calyx split partly away, magnified; 6, a separate fruitlet, cut 
transversely, magnified; 7, embryo, magnified. 
