A classic Valley oak silhouette on Mount Diablo: a huge, deeply branched canopy with drooping lower limbs, bare in winter. Photo: Miguel Vieira, Wikimedia Commons
A mature California black oak at Briones Preserve, showing its characteristically gnarled branching and early-autumn color. Photo: Awinch1001, Wikimedia Commons (CC BY 4.0) Quercus kelloggii,
A mature California bay laurel at Wildcat Canyon, showing the species’ typical dense, multi-trunked crown. Photo: Awinch1001, Wikimedia Commons (CC BY 4.0) Umbellularia californica, the
Blue oak woodland on Mount Diablo — scattered, open-grown trees over summer-dormant grassland, the species’ signature setting. Photo: Awinch1001, Wikimedia Commons (CC BY 4.0) Quercus
A blooming mound of Desert Zinnia after seasonal rain, near Las Cruces, New Mexico. Photo: Alex Abair / Wikimedia Commons (CC BY 4.0) Desert Zinnia
New Mexico yucca rosettes on a rocky Oklahoma panhandle mesa, with a flower stalk just emerging. Photo: Rebou, Wikimedia Commons (CC BY-SA 3.0) Yucca harrimaniae
A mature beaked yucca shows the species’ signature pom-pom crown and shaggy, thatched trunk, with a spent flower spike above the leaves. Photo: Bigmacthealmanac, Wikimedia
A narrowleaf yucca rosette on the slickrock of Dead Horse Point State Park, Utah. Photo: Larry D. Moore (CC BY 4.0) Yucca angustissima, the Narrowleaf
Walter’s violet in bloom, Jessamine Creek Gorge, Kentucky. Photo: Mason Brock (Public domain) Viola walteri, commonly called Walter’s Violet or Prostrate Blue Violet, is a
Flower racemes and pinnately compound leaves of Kentucky wisteria in cultivation. Photo: Jaknouse (CC BY-SA 3.0) Wisteria macrostachya, commonly known as Kentucky Wisteria, is a
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