Fig 1.
Fertile axes and synangiate pollen organs of Telangiopsis sp.
A, Twice dichotomous axes attached by one pollen organ and two planate pinnules (arrows) (PKUB14817). B, Four times branching axes with three terminal pollen organs. Upper and lower arrows indicating two pollen organs and a single one, respectively (PKUB14801a). C, Thrice dichotomous axes with two pairs of terminal pollen organs (arrows) (PKUB14842a). D, Four times branching axes terminated by fragmentary pollen organs (PKUB14813). E, Dichotomous axes with one terminal pollen organ preserved. Arrow 1 indicating probably broken point of another pollen organ, arrows 2 and 3 dehiscence line on microsporangium (PKUB14801a). F, Paired pollen organs (arrows) terminating twice dichotomous axes. Arrow 2 indicating broken point of a probable pollen organ (PKUB14816b). G–I, Lateral view of synangium with basally fused microsporangia (PKUB14887, PKUB14817 and PKUB14814, respectively). J, Two microsporangia showing dehiscence line (arrow) (PKUB14807). K–O, Synangia with basally fused microsporangia showing ventral surface. K, Two pollen organs. Arrows showing dehiscence line on microsporangium (PKUB14841b). L, M, Three pollen organs and dehiscence line (arrow) (PKUB14801b and PKUB14801a, respectively). N, O, One pollen organ and dehiscence line (arrow) (PKUB14840a and PKUB14801b, respectively). A–D, scale bars = 2 mm. E–O, scale bars = 1 mm.
Fig 2.
Fertile axes and terminal pollen organs of Telangiopsis sp.
A–E, Line drawings of Fig 1A–1D and 1F, respectively. B, Arrows indicating dehiscence line of two microsporangia and stars two pollen organs. C, Arrow indicating a pollen organ. E, Arrow showing limit of two overlapped microsporangia.
Table 1.
Characters of the Late Devonian pollen organs.
Fig 3.
Stem and/or vegetative fronds of Telangiopsis sp.
A, B, Part and counterpart of a specimen showing stem attached by proximally bifurcate frond. Frond rachises bearing pinnae and highly dissected pinnules in alternate arrangement (PKUB14842b, PKUB14842a). A, Arrow indicting part of stem enlarged in C. C, Enlargement of arrowed part of A, showing spines and their scars on stem. D, Frond rachis with alternately arranged pinnae (PKUB14882). E, F, A piece of frond rachis bearing pinnae and planate pinnules (PKUB14880, PKUB14823). A, B, scale bars = 1 cm. C, scale bar = 2 mm. D–F, scale bars = 5 mm.
Fig 4.
Stem and/or vegetative fronds of Telangiopsis sp.
A, Line drawing of Fig 3A and 3B in combination. B, C, Line drawings of Fig 3D and 3E, respectively.
Table 2.
Characters of stems and vegetative fronds of the Late Devonian seed plants.