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Centaurea jacea, L. In Blankenberghe and in Ghent 

 .we found : 1" ? capitula without marginal florets (agreeing 

 with Müller's primitive forra). — 2° 9 capitula without 

 marginal florets. — Male and female individuals with 

 radiating florets do not occur. 



Samolus valerandi, L. In the downs in Blanken- 

 berghe. The corolla is white, inconspicuous. The honej- 

 gland lies like a ring round the upper part of the ovary. 

 We could not detect any honey. The anthers are introrse. 

 One or more of them touch the stigma (spontaneous self- 

 fertilisation). The throat of the corolla is beset with five 

 appendages. We do not know of what use they may 

 be. The plant bears good seed. No visitors seen. 



Teucrium scorodonia, L. In Laroche (Luxembourg). 

 We found this plant gynodioeceous. 



Myosotis palustris, With., is gjnodioeceous in the 

 neigbourhood of Ghent. 



