33 
Type I11é: Plumbagella (Danteren, 1915). 
Type IV : Plumbago (Dauteren, 1915). 
mre NS a 
Development of the chalazal group of nuclei. 
The primary chalazal nucleus also, normally develops into a 
group of four nuclei: the lower polar nucleus and three antipodals. 
miegaspore 
prim, micr 
and prim, 
chalaz.nucl. 
full-grown 
chal. group 
(:) 
(eee es 
i me a set 
ae ° 2 
° 
() 
©) 
()- 
4 
—eee 
Fig. 7. Reduction of the chalazal group. 
Type la 
3 antip.; polar nuel. 
Type lb 
2 antip., 2 polar 
nuel, 
Type 2a 
2 antip., 1 polar 
nucl, 
Type 2b 
1 antip., 2 polar 
nucl, 
Type 3a 
1 antip., 1 polar 
nucl. 
Type 3b 
2 polar nucl, 
Type 4 
1 polar nucl. 
Type 5 
chalaz. group whol- 
ly suppressed 
The number of nuclei however may be either more or less. Many 
instances both of suppression and of secondary increase are known. 
Ann. Jard. Bot. Buitenz. Vol. XXXIII. 
3 
