Fig. 754: Iva axillaris: a, habit, x %; b, central sterile flower, x 10; c, inflorescence, 

 X 11/2; d, marginal pistillate flower, x 10; e, flower head, the toothed involucral cup 

 enclosing flowers, x 6; f, involucral cup with distinct lobes, x 4; g and h, achenes, the 

 outer and inner sides with surface resin-dotted, x 10; i and j, chafilike receptacle 

 bracts, x 10; k, achene (cross section), x 10. (From Mason, Fig. 357). 



