In this paper of catalogue Norteast brasilian plants pollen grains, the autors deals with Sterculiaceae. Based on the aperture as major and exine pattern and size as subsidiary caracteres, seven pollen types have been recognized. Guazuma small, prolate spheroidal, 3-zonocolporate, having ornamented ora Helicteris produces two pollen types: 3-zonoporate pilate grains (H. mollis) and 3-zonoporate verrucose grains (H. baruensis and H. heptandra); Sterculia 3-zonocolporate and suprereticulate grains, Waltheria three pollen types: 3-zonocolporate retipilariate grains (W. viscosissima longistila); (4)- 6-colporate suprareticulate grains (W. indica) and (4)- 6-colporate spinulose (W. viscosissima brevistila) grains. Identification key for studied species, based on the morphological characteristics of their pollen grains, is presented.