Grimmia limprichtii A–C habit D–F leaves G–I laminal basal cells J–L cross-sections at mid-leaf. [A, D, G, J lectotype of Grimmia limprichtii, Kern B, E, H, K Tibet, Zi Wang 20180808022 C, F, I, L holotype of Grimmia obtusifolia, Lang 1347] Photos A, D, G and J courtesy of the Farlow Herbarium of Harvard University and others by Chao Feng.