Allium prattii has a scape up to 60 cm tall, round in cross-section. Leaves are flat, linear or very narrowly elliptic, usually a bit shorter than the scape. Umbel is hemispheric with many red or purple flowers.Forbes, Francis Blackwell, & Hemsley, William Botting. 1903. Journal of the Linnean Society, Botany 36(250): 124.Wang, Fa Tsuan, & Tang, T. (Chin). 1937. Bulletin of the Fan Memorial Institute of Biology : 7: 297line drawing of Allium prattii, Flora of China Illustrations vol. 24, fig. 162, 1-3
