96 ILLINOIS BIOLOGICAL MONOGRAPHS [186 



EXPLANATION OF PLATE 



Fig. 7, a-d — Cuscula odontolepis typica 



Fig. 7, e — Cuscula odonlolepis fimbriate 



Fig. 8, a-e — Cuscula erosa 



Fig. 9, a-e — Cuscula umbellate typica 



Fig. 9, f-g — Cuscula umbellate dubia 



Fig. 10, a-e — Cuscula floribunda 



Fig. 11, a-e — Cuscula chapalana (d represents the ovary) 



Fig. 12, a-e — Cuscula partita 



