Emporia lockardii (Mapes & G. W. Rothwell) Mapes & G. W. Rothwell, comb. nov.

nomenclatorial act: 
emend.
new combination
Page: 
327
diagnosis: 

Features of species those of genus. Penultimate leaves 8–10 mm long, 1–2 mm wide; ultimate leaves triangular to linear, slightly concave to S-shaped in side view, 2.5–5.0 mm long, 0.5–1.2 mm wide. Epidermal cells elongated to polygonal, often papillate; marginal trichomes present. Stomatal complexes ca. 58x46 µm with 5–9 unipapillate subsidiary cells; guard cells sunken. Wood rays 1–8 cells high. Ovulate cones cylindrical-ellipsoidal, ca. 5 cm long, 1.5 cm wide, with forked bracts and axillary ovuliferous dwarf shoots free to the base. Ovuliferous dwarf shoots with 14–30 sterile scales, 1–3 sporophylls; additional sporophylls with abortive/immature ovules often present. Ovules bilateral and winged, with rounded-subcordate base, and attachment scar basal to sublateral; nucellus free from integument to near chalaza, simple pollen chamber with nucellar beak.

systematic position: 
Simple Paleozoic conifers, Emporiaceae, Emporia
Classification: 

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith