Sweet trefoil (Trigonella caerulea ) Pollen

This is pollen collected from Sweet trefoil (Trigonella caerulea ) flowers found along the Wenatchee River of Washington State. It has been dewaxed with alcohol but not acetalized. The mounting medium is Shurmount with a refractive index of 1.49. This is at high focus.

Transmitted Brightfield Illumination

Definition/Function:

KINGDOM: Plantae /Angiosperms /Eudicots /Asterids ORDER: Asterales FAMILY: Asteraceae TRIBE: Heliantheae GENUS: Arnica SPECIES: cordifolia

Significance in the Environment:

Characteristic Features:

Associated Particles:

References:

Faegri, Knut and Johs Iversen, TEXTBOOK OF POLLEN ANALYSIS, Hafner Publishing Company, 1964.

Kapp, Ronald O., HOW TO KNOW POLLEN AND SPORES, Wm. C. Brown Company, 1969.

Moore, P.D., J. A. Webb, and M. E. Collinson, POLLEN ANALYSIS, Blackwell Scientific Publications, 1991