Knapweed (Centaurea spp.) Pollen

This is pollen collected from Knapweed (Centaurea spp.) flowers in Eastern Washington State. It has been dewaxed with alcohol but not acetalized. The mounting medium is Melt Mount with a refractive index of 1.704. This is at intermediate focus.

Transmitted Brightfield Illumination

Definition/Function:

KINGDOM: Plantae /Angiosperms /Eudicots/Asterids ORDER: Asterales FAMILY: Asteraceae SUBFAMILY: Centaureinae GENUS: Centaurea SPECIES: spp.

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