• Plate I

     

    Figures 4 to 9. Fossombronia crassifolia Spruce. -4. Dry population, scale bar =1000 µm - 5. OM micrograph of typical gametophyte, scale bar = 1000 µm. -6. SEM micrograph of gametophyte showing furcate branching, long leaf insertion, erect leaf stance and crispate contour, scale bar = 1000 µm. -7. OM micrograph of leaf showing lobate margin and auricle (arrow), scale bar = 1000 µm. -8. Transverse section through a plant showing the thickened leaf base extending to approximately 1/3 of its length, scale bar = 1000 µm. -9. OM micrograph of elongated median leaf cells showing oil bodies, scale bar = 10 µm. [Figures 4, 6 and 7 are from the lectotype (G 2370/230); figure 8 is from the isolectotype, Spruce, s.n. (E 2100); figures 5 and 9 from Mexico, Gradstein s.n. (ABSH)].

     

  • Plate II

     

    Figures 10 to 15. Fossombronia crassifolia Spruce. -10. OM micrograph of marginal leaf cells, scale bar = 100 µm. -11. SEM micrograph of gametophyte with sub-apical cluster of antheridia. Notice the auricles on leaves, scale bar = 1000 µm. -12. SEM detail of cluster of antheridia (an) with some archegonia (at arrow) in the posterior side, scale bar = 100 µm. -13. SEM micrograph of fertile gametophyte with emerging sporophyte, scale bar = 1000 µm. -14. OM micrograph of caulocalyx showing short stipe and recurved mouth, scale bar 1000 µm. -15. OM micrograph of capsule wall with nodular and semiannular thickenings, scale bar = 100 µm. [Figures 10 to 15 are from the lectotype (G 2370/230)].

     

  • Plate III

     

    Figures 16 to 21. Fossombronia crassifolia Spruce. -16. OM micrograph of spores and elaters, scale bar = 10 µm. -17. OM micrograph of a typical elater with tightly coiled spirals, scale bar = 10 µm. -18. OM micrograph of spore distal face showing the lamellate ornamentation, scale bar = 10 µm. -19-21. SEM micrographs of spore distal face ornamentation. Notice the blunt ends of the lamellae, scale bar = 10 µm. [Figures 16 to 20 are from the lectotype (G 2370/230); figure 21 is from the isolectotype in E 2100].

     

  • Plate IV

     

    Figures 22 to 25. Fossombronia crassifolia Spruce. -22-23. SEM micrographs of spore distal face, scale bar = 10 µm. -24. OM microgrpah of spore proximal face, notice the blunt ends of the lamellae, scale bar = 10 µm. - 25. SEM of spore proximal face, notice the blunt ends of the lamellae, scale bar = 10 µm. [Figures 23 and 24 is from the lectotype (G 2370/230); figures 22, 24 and 25 are from the isolectotype in E 2100]