Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (66 photos)
Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 6-10) (8 photos)
Native Plant Society of Texas - Plant profile with basic characteristics, some horticultural information, and a distribution map within Texas. (3 photos)
Trees and Shrubs Online - Reference page curated by the International Dendrology Society with descriptive characteristics and horticultural notes. (1 photo)
Virginia Tech Dendrology - Factsheet with botanical characteristics and photos of various features. (6 photos)