Martin and Drew 1970

Image No. Family Species Class Sculpture
33 Leguminosae Pitheclobium dulce polyad scabrate
34 Zygophyllaceae Tribulus terrestrus periporate reticulate
35 Zygophyllaceae Kallstroemia grandiflora periporate reticulate
36 Euphorbiaceae Cnidoscolus angustidens inaperturate crotonoid

UofAz Palynology