J. Barrera, P. daSilva, M.A. Garcia, S. Huang, J. Stern
Dichelostemma congestum is a species of flowering plant known by the common name ookow or fork-toothed ookow. This perennial wildflower is native to the hills and mountains of western North America. Its tall, thin, naked stem is topped with an inflorescence packed densely with six to 15 flowers, each about a centimeter wide and long, with usually six petal-like lobes in shades of bright purple.