Mature Sargent cypress trunks with characteristic fibrous, furrowed bark, Cedar Mountain Ridge, Alameda County. Photo: Joey Malone, Wikimedia Commons (CC BY-SA 3.0) Hesperocyparis sargentii (formerly
A stand of red willow marking a seasonal drainage, Rancho Sierra Vista, Santa Monica Mountains National Recreation Area. Photo: Anthony Valois/National Park Service (Public Domain)
A mature Northern California black walnut growing at River Bend Park, Carmichael, California. Photo: antrozousamelia, Wikimedia Commons (CC BY 4.0) Juglans hindsii, commonly known as
A mature Modoc cypress with its tall, narrow, conical crown, Goosenest Mountain, Siskiyou County. Photo: Joey Malone, Wikimedia Commons (CC BY-SA 3.0) Hesperocyparis bakeri (formerly
A typical MacNab cypress with its broad, sparse crown and lack of a single dominant trunk, Mayacamas Mountains, Napa County. Photo: Joey Malone, Wikimedia Commons
A dense Palmer oak thicket on a rocky desert-chaparral slope, the typical growth form of the species. Photo: Tentaculata, via Wikimedia Commons (CC BY-SA 4.0)
Leather oak forms a dense, low mound of thick, cupped leaves, here on the serpentine soils it favors in Trinity County, California. Photo: Wendy Boes,
Island oak growing in its native habitat on Santa Rosa Island, part of Channel Islands National Park. Photo: Geographer, via Wikimedia Commons (CC BY 2.5)
A mature four-leaf pinyon near Mount Laguna, San Diego County, with the rounded, multi-trunked crown typical of the species. Photo: andy71, via iNaturalist/Wikimedia Commons (CC
A mature Brewer spruce in the Siskiyou Mountains, its long pendulous branchlets hanging like curtains from the limbs. Photo: sheriff_woody_pct, via iNaturalist/Wikimedia Commons (CC BY
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