FIG. 11. — Fissidens lagenarius Mitt. A in On the peristomes of the corticolous African species of Fissidens Hedw. (Fissidentaceae, Bryophyta)

FIG. 11. — Fissidens lagenarius Mitt. A, OPL, note the transparent OPL lamellae protruding beyond the narrower underlaying IPL lamellae (left below); B, OPL; C-F, IPL variations: C, IPL of two teeth, each composed of a single column of half cells (reduced situation); D, three teeth focused on the incrassate lamellar plates; in the middle tooth two columns are clearly recognizable (normal situation); E, IPL of three teeth focused on the trabeculae; F, IPL of single tooth; G, side view of tooth. A-D, G from Brazil, São Paulo, Yano 235, SP, private herbarium Bruggeman-Nannenga; E from Zambia, North-western Province, Mushitu Forest, Townsend 75/135, E, private herbarium Bruggeman-Nannenga; F from Brazil, Yano 560 235, SP, private herbarium Bruggeman-Nannenga. Scale bar: 20 µm.