Berg (2005) notes that many Bornean figs in Section Conosycea have calyptrate (cap like) bud covers which protect the young unripe figs against insect attack. These bud covers are often covered in short stiff hairs. As the juvenile figs grow and expand these bud covers wither and fall off the fig.
Ficus species that produce bud covers include;
All Ficus stricta photos by Shuai LIAO taken at the Sukau Rainforest Lodge located in the flood plain forest of the Kinabatangan river. Collection #20190469.