Saxifragales

The saxifrage family (~640 species, 33 genera). Mostly herbs of rocky or alpine habitats with often basal leaves and small …

A monotypic family (Paeonia, ~40 species) of perennial herbs and shrubs with compound leaves and large showy flowers with many …

The sweetgum family (~15 species, 3 genera). Trees with palmately lobed leaves and distinctive spiky ball-like aggregate fruits. Includes sweetgum …

A monotypic family (Cercidiphyllum, 2 species — katsura trees). Deciduous trees from Japan and China with circular leaves and caramel-scented …

The currant family (~150 species, 1 genus Ribes). Shrubs with alternate lobed leaves and racemes of small flowers. Includes currants …

The witch-hazel family (~100 species, 27 genera). Trees and shrubs with simple alternate leaves and small strap-like petals. Includes witch-hazel …

The stonecrop family (~1,400 species, 34 genera). Succulent herbs and shrubs with fleshy leaves and CAM photosynthesis. Includes sedums, echeverias, …