Pendant lichen on trunk of Pseudotsuga menziesii, collected.
Found and identified by E. Peterson on oak trunk, collected.
Found in freshwater sample collected from turbid water with a sprig of submerged vegetation near the boat ramp in Colusa. 250-micron banana-shaped alga, tentative ID based on AI. Phase, darkfield and brightfield images.
Found in freshwater sample collected from turbid water with a sprig of submerged vegetation near the boat ramp in Colusa. Stack of boxy diatoms, about 70 microns wide. AI suggestion is Melsoira.
Growing on grass in lawn (oak woodland), 2500’
On trunk of Black Oak, collected a portion, maybe Physconia or similar? Thallus is K negative in water cross section, rhizines appear thick and squarrose, portion of the lower surface look quite whitish, possibly denuded of lower cortex?
2-cm patch on bottom of overturned tree trunk.