• Plate I

     

    Figs. 212-217. Fossombronia pusilla (L.) Nees 212. OM micrograph of a typical plant showing the branching habit and dorsal caulocalyces (arrow); scale bar = 1 mm. 213. SEM micrograph a fertile branch showing leaf stance and gametangia; scale bar = 100 µm. 214. SEM micrograph of stem apex with intermixed antheridia (an) and archegonia (ar); scale bar = 100 µm. 215. SEM micrograph of fertilized archegonia (ar) and early developing caulocalyx (arrow); scale bar = 100 µm. 216. SEM micrograph of a single caulocalyx, showing the crested outgrowths (arrows); scale bar = 100 µm. 217. OM micrograph of the caulocalyx in the Dixon collection (BM); scale bar = 1 mm. Fig. 212 from Scotland, Milne-Redhead s.n. (NMW). Fig. 213 - 215 from Spain, Heras s.n. (ABSH, ex hb VIT 496). Fig. 216 from a topotype of F. pusilla var. decipiens, Corbière s.n. (G). Fig. 217 from Dickson s.n. (BM).

     

  • Plate II

     

    Figs. 218-223. Fossombronia pusilla (L.) Nees 218. OM micrograph of the caulocalyx from the lectotype of F. pusilla var. ochrospora; scale bar = 1 mm. 219. OM micrograph of the caulocalyx from the holotype of F. pusilla var. maritima; scale bar = 1 mm. 220. OM micrograph of the caulocalyx from the lectotype of F. pusilla var. decipiens; scale bar = 1 mm. 221. OM micrograph of a leaf; scale bar = 1 mm. 222. OM micrograph of median leaf cells, showing the transition from elongate basal cells to the isodiametric median cells (arrow); scale bar = 10 µm. 223. OM micrograph of the inner capsule wall, basal area, showing the semi-annular and annular thickening bands; scale bar = 100 µm. Fig. 218 from the lectotype of F. pusilla var. ochrospora, Lindberg s.n. (G). Fig. 219 from the holotype of F. pusilla var. maritima, Paton s.n. (BM). Fig 220 from the lectotype of F. pusilla var. decipiens, Corbière s.n. (CHE). Fig. 221 from Scotland, Milne-Redhead s.n. (NMW). Fig. 222 from England, Paton s.n. (ABSH). Fig. 223 from Dickson s.n. (BM).

     

  • Plate III

     

    Figs. 224-229. Fossombronia pusilla (L.) Nees 224. OM micrograph of a spore and elater; scale bar = 100 µm. 225. SEM micrograph of the distal spore wall; scale bar = 10 µm. 226. SEM micrograph of the proximal spore wall; scale bar = 10 µm. 227. SEM micrograph of the distal spore wall; scale bar = 10 µm. 228. SEM micrograph of the proximal spore wall; scale bar = 10 µm. 229. SEM micrograph of the distal spore wall; scale bar = 10 µm. Fig. 224 from Dickson s.n. (BM). Fig. 225, 226 from the lectotype (epitype) of F. pusilla, Dillenius s.n. (OXF). Figs. 227, 228 from the lectotype of F. pusilla var. ochrospora, Lindberg s.n. (G). Fig 229 from the lectotype of F. pusilla var. decipiens, Corbière s.n. (CHE).

     

  • Plate IV

     

    Figs. 230-235. Fossombronia pusilla (L.) Nees 230. SEM micrograph of the proximal spore wall; scale bar = 10 µm. 231. SEM micrograph of the distal spore wall; scale bar = 10 µm. 232. SEM micrograph of the proximal spore wall; scale bar = 10 µm. 233. SEM micrograph of the distal spore wall; scale bar = 10 µm. 234. SEM micrograph of the proximal spore wall; scale bar = 10 µm. Fig. 235. SEM micrograph of the distal spore wall; scale bar = 10 µm. Fig. 230 from the lectotype of F. pusilla var. decipiens, Corbière s.n. (CHE). Fig. 231, 232 from the holotype of F. pusilla var. maritima, Paton s.n. (BM). Fig. 233, 234 from the lectotype of F. loitlesbergeri, Baumgartner s. n. (FH). Fig. 235 from an isolectotype of F. perpusilla, Colenso a2019 (BM).

     

  • Plate V

     

    Figs. 236-239. Fossombronia pusilla (L.) Nees 236, 237. SEM micrographs of the distal spore wall (236) and the proximal spore wall (239) of F. pusilla from North America; scale bar = 10 µm. 238. SEM micrographs of the distal spore wall (238) and the proximal spore wall (239) of F. longiseta; scale bar = 10 µm. Fig. 236, 237 from California, Doyle 9535 (ABSH). Fig. 238, 239 from the lectotype of F. longiseta, Bolander s.n. (MANCH).