. Bulletin of the Natural Histort Museum. Geology series. 60 J. WATSON, LYDON & HARRISON -:^«v\ ;^,^^,- t B â * t j;« « .'â *â¢. Fig. 24 A-I Pseudotorellia vunesiana sp. nov. A, apical portion of leaf with tip missing, LM, , x 25; B, holotype; leaf fragment opened up to show stomata confined to one surface (?lower), , x 25; C-L, all from ; C, lower cuticle with stomata. LM. x 125; D, inside surface of lower cuticle showing stomata arranged in three indistinct bands, SEM, x 75; E, four stomata viewed from the inside. SEM, x 250; F, single stoma viewed from
. Bulletin of the Natural Histort Museum. Geology series. 60 J. WATSON, LYDON & HARRISON -:^«v\ ;^,^^,- t B â * t j;« « .'â *â¢. Fig. 24 A-I Pseudotorellia vunesiana sp. nov. A, apical portion of leaf with tip missing, LM, , x 25; B, holotype; leaf fragment opened up to show stomata confined to one surface (?lower), , x 25; C-L, all from ; C, lower cuticle with stomata. LM. x 125; D, inside surface of lower cuticle showing stomata arranged in three indistinct bands, SEM, x 75; E, four stomata viewed from the inside. SEM, x 250; F, single stoma viewed from the inside surrounded by rings of subsidiary and encircling cells, SEM, x 250; G, H, stomata showing oval rim to pit (in top plane of focus) and polar appendages to guard cells (in lower plane of focus), LM, x 500; I, stoma viewed from the inside with distinct cutinization of ventral as well as dorsal periclinal walls of guard cells, SEM, x 500; J, crater-like stomatal pit, SEM, x 500; K, cut section through a stomatal pit, SEM, x 500; L, inside surface of upper cuticle showing outlines of rectangular cells and longitudinal bars, SEM, x 250. of a scar at the base of the leaf and the occurrence of P. linkii needle leaves in concentrated deposits (brachyblasts of Vakhrameev 1971) in the Wealden of northwest Germany are thought to indicate sea- sonal leaf abscission. Sulcatocladus robustus shoots (Watson & Harrison 1998), first attributed to this species by Dunker (1846: 18), and later by Wilde (1991) but not separately named, are regarded as. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Museum (London). Andover : Intercept
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