Matricaria recutita (flower)

Chamomile (flowering parts) (Matricaria Chamomilla) L., Compositae. 

General Characteristics Epidermal cells with sinuate vertical walls; abundant collapsed parenchyma tissue; very porous tracheid-like cells. No starch. The pollen grains with prominent conical projections and three pores form the most marked microscopial characteristic of the powder. The glandular trichromes are usually so much collapsed as to be unrecognizable. 

Color Greenish. 

Scent Fragrant, chamomile odor. 

Flavor Bitter. 

Ash Content Ash 10 per cent. 

Reported Adulterants Adulterated with flowers of Anthemis arvensis, Maruta cotula, and other related plants. Compare with Roman chamomile.

Source: Schneider, A. (1921) The Microanalysis of Powdered Vegetable Drugs, 2nd ed.