Indeed, the acceptance of the nectarial stubs as staminodes involves the acceptance of ancestral polyandry in Greyiaceae and Francoaceae, where the related rosid families are all basically diplostemonous.
Theophrastaceae, Sapotaceae, Myrsinaceae, and Primulaceae are examples of the derivation of the obhaplostemonous androecium from diplostemonous ancestors.
In this way a diplostemonous androecium becomes transformed into an (ob)haplo-stemonous one.
The association of Clusiaceae with clades having diplostemonous flowers (e.g., Linales, Ochnaceae, rosids I) supports the acceptance of a staminodial nature of the nectaries in Harungana.