Taxon: Ptychomitrium gardneri

Plate 141. Ptychomitrium gardneri. 1, habit (× 2.5). 2, leaf (× 30). 3, apical leaf cells (× 85). 4, upper leaf cells (× 335). 5, median leaf cells (× 335). 6, basal leaf cells near costa (× 335). 7, basal marginal leaf cells (× 335). 8, cross section of stem (× 335). 9, capsule (× 30). 10, peristome (× 335). 11, annulus (× 335). 12, spores (× 335). (Drawn from M.-Z. Wang 12847d, PE.)