Photo of the boundary between two ages of pumice deposit in Oregon from Mount Mazama (Crater Lake, ca.1500yrs); lower dark pumice is B horizon of buried profile. n.b. gopher hole. Entisol, HC, C, E, D

Photo of upper profile in coarse loamy sand (pumice) at Antelope Tree Farm; Lapine Series. cf. Slides # 72 & 73. Entisol, P, C, G, D.

Photo of Zanthoraceae pressii which is susceptible to Phytophthora cinnamomi and therefore spreads the disease.

IUFRO - 41-year-old PIa

IUFRO - 41 year old PIa

IUFRO - Vardal - 19-year-old Pia, thinned at 14 years

IUFRO - Veldre - 80 - 100-year-old PIa - note crown shape

IUFRO - Veldre - 80 - 100-year-old PIa - note crown shape

IUFRO - Veldre - 80 - 100-year-old PIa - note crown shape

IUFRO - Veldre - fertilization of old stands