FIGURE 6 in Description, distribution and ecology of endemic Tasmanian quillwort, Isoetes jarmaniae, sp. nov. (Isoetaceae; Lycopodiopsida)

FIGURE 6. Isoetes jarmaniae spores; 3A: megaspore proximal view, with congested ornamentation and slightly triangular shape; 3B: megaspore lateral view, rugulate-cristate ornamentation and papillae in patches on distal side of alate (winged) equatorial ridge; 3C: megaspore distal view, with congested ornamentation pattern of anastomosing, rugulate-cristate, thick-walled muri and with fewer standalone columnar muri; 3D: megaspore distal view, with alternative congested pattern of tall, predominantly columnar muri and a relatively wide (5−9% width of megaspore body), thin, alate equatorial band; note three microspores to left; 3E: plump, blunt-ended microspore with low, obscure dorsal ridge; 3F: detail of densely fine papillate microspore ornamentation. Megaspore scale bar (3A–D) = 100 µm. (3A: Garrett s.n. Giblin River valley, February 1994 (SEM image: D. M. Britton, 1994); 3B & 3C: Jarman s.n., near Lancelot Hill, Maxwell River valley, April 1985 (SEM images: P.C. Sokoloff, June 2021); 3D & 3E: de Salas 2005, Pass Hill, Giblin River valley, March 2018 (SEM images: P.C. Sokoloff, June 2021); 3F: Jarman s.n., near Lancelot Hill, Maxwell River valley, April 1985 (SEM images: P.C. Sokoloff, June 2021))