Taxon: Dicranum hamulosum

Plate 42. 1–8, Dicranum hamulosum. 1, 2, leaves (× 17). 3, lower leaf cells (× 600). 4, 5, upper marginal leaf cells (× 600). 6, leaf apex (× 250). 7, cross section of alar cells (× 250). 8, cross section of leaf base (× 250). 9–17, Dicranum himalayanum. 9, lower stem leaf (× 17). 10, 11, upper stem leaves (× 17). 12, outer perichaetial leaf (× 17). 13, inner perichaetial leaf (× 17). 14, median marginal leaf cells (× 500). 15, lower marginal leaf cells (× 500). 16, apical leaf cells (× 500). 17, cross section of alar cells (× 500). (1–8, drawn from C. Gao 1090, IFSBH; Z.-C. Ni 101, IFSBH.)