Pretty sure this is Quercus lobata x virginiana which is an unnamed cross-sectional hybrid. Although sect. virentes is a close relative of sect. Quercus and other similar hybrids have been observed. Most famously Quercus x comptoniae.
Other observations of the same tree: https://www.inaturalist.org/observations/174290387, https://www.inaturalist.org/observations/239532263
Another nearby tree with similar features: https://www.inaturalist.org/observations/239532042
Odor unpleasant. Probably planted for "restoration"
P. Cinctulus? Black spores and seemingly slight green/blue tinge to some of them. Found growing by the hundreds in irrigated woodchips.
This species is not usually found in this area, but there is a line of them planted by the local parks department nearby. I suspect it is an offspring of those.
Shirttail Peak, only 2 individuals seen, both vegetative
Many along the branches which could be "branch tumors. See Russo p. 200-201. Cause unknown and not considered a gall but perhaps a genetic anomaly
probably introduced during homestead era
On Amsinckia menziesii
Growing mixed in with Erythranthe marmorata.
Collection #: 2024MCB9
2 Leucistic birds in the colony
gall on Miner's Lettuce
Spores in congo red, (7) 7.3 - 9.2 (9.3) x 4.6) 4.7 - 5.5(5.7) µm, Q = (1.4) 1.5 - 1.8 (2), N = 30, Me = 8.2 x 5.1 µm, Qe = 1.6. Growing on a conifer stick.
Absolutely no idea what this is/will be. Seemed to be just white mycelium with a rusty-colored guttation. Several nearby genus (on the same tree) include multiple Stereum, Trametes, Peniophora, Pleurotus, Coprinopsis, Mycena, and at least one Myxo. Tree is an oak, unsure which species.
Lining all the surrounding roadsides
HAY-F-007723
On Bear scat
p5 11-7
Scent = none
Taste = mild pleasant
KOH = none
HAY-F-002996
First time seeing this chicory tribe member
Growing on a well decayed Quercus agrifolia log.
Thanks to Evelyn Chea for showing me the location - it's the same log from https://www.inaturalist.org/observations/195513390
This is most likely the individual plant from this area in the UC-Jepson Herbaria ( listed in the flora by Ertter and Bowerman ) . This plant is semi-deciduous .
The tree is included as a potential host. It may or may not be a pin oak.
Fly on manzanita in chaparral. Does it have a parasite on its abdomen?
Eating prey