Table 1 Details of voucher specimens of Pteronia species used for anatomical study.

Taxon	Voucher specimen	Part studied
P. camphorata var. laevigata	Pillans 9682 (NBG)	Fruit
	Jardine & Jardine 299 (NBG)	Leaf
P. camphorata var. armata	Pond UP212 (NBG)	Fruit
	Rodriguez-Oubina &	Leaf
	Cruces 2092 (NBG)
P. camphorata var. longifolia	Pambaniso 13 (NBG)	Fruit
	Tymens s.n. (NBG)	Fruit
	Manning 2143 (NBG)	Leaf
P. stricta	Moffett 328 (NBG)	Fruit
	Oliver 11134 (NBG)	Leaf & fruit