i6o Johnson.— On Arceuihobium Oxycedri. 
Fig. 13, cont. In the evascular stamens, the fibrous wall, the remains of the 
tapetum, and a few pollen-grains are shown, x 120. 
Fig. 14. A nearly ripe pollen-grain. Exine, intine, large spheroidal vegetative 
nucleus and fusiform generative nucleus were all very distinct, x 480. 
Fig. 15. Longitudinal section of a very young male flower, p. s. perianth- 
segment. si. stamen distinct from perianth-segment, fi. still younger male 
flowers, x 50. 
Fig. 16. A part of the same more highly magnified, p. s., si. as in Fig 15. 
archp. archesporium-cells dividing into tapetum and mother-cells of spores, 
x 1020. 
