Leaves 1.0-4.7 cm long; simple leaves 1.0-2.5 cm; forked leaves 2.2-4.7 cm, angle of fork ranging from 20º to 120º. Stems with septate pith comprising sclerotic nests and parenchyma cells; axillary elongated resin rodlets with dark contents in secondary phloem and cortex; epidermis with isodiametric polygonal epidermal cells and elongated trichomes. Long marginal trichomes at leaf base, diminishing to short spines near apex, surficial trichomes elongated and prominent on midrib. Pollen cones 2.0-2.3 cm wide, >7 cm long, prepollen with bent monolete, 103-152 µm in greatest dimension. Ovulate zones ca. 2.5 cm wide, >16 cm long with long forked bracts; ovuliferous dwarf shoots 14-20 mm long, 6-8 mm wide. Vegetative scales with mucronate apex and elongated surficial trichomes; ovules oval, ca. 2.5 mm long.
Barthelia furcata sp. nov.
nomenclatorial act:
protologue/first publication
Page:
639
diagnosis:
systematic position:
Spermatopsida, order indet., Bartheliaceae, Barthelia
typeseries:
Holotype. Permineralized specimen showing external morphology, internal anatomy, and cuticular characters; vegetative proximally, and bearing axillary ovuliferous dwarf shoots distally; broken at both ends. OUPH specimen M-1614 (figs. 4.2, 4.3, 5.3, 6.2-6.6, 10.1, 10.6, 10.7, 11.2, 11.3, 11.6).
Paratypes. M-1421 (compressed ovuliferous zone), figs. 10.2, 10.4, 10.5, 11.1, 11.5; M-1073 (pollen cone), figs. 8.1-8.10; M-503 (permineralized vegetative shoot), fig. 1.1; M-485 (permineralized vegetative shoot), figs. 5.4-5.7; and DPNHMBRCKU specimens ESU5981 (permineralized ovuliferous zone), not figured; ESU5928 and ESU5931 (pollen cone), figs. 7.1, 7.3; ESU6007, ESU6025, and ESU6032 (vegetative shoot), fig. 2.1.
stratigraphy:
Classification:
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