Emporia lockardii
authorship:
(Mapes & Rothwell, 1984) Mapes & Rothwell, 2003
rank:
species
Holotype: OUPH M26.
Paratypes: OUPH M147 and M148
Emporia lockardii
Unranked:
Emporia lockardii
Lebachia lockardii sp. nov.
nomenclatorial act:
protologue/first publication
Page:
72
diagnosis:
Ovulate cones, averaging 5·0 cm long x }·5 cm wide, borne as single terminal units on vegetative axes with helically arranged simple or bifid leaves. Cones comprised of primary axis with helically arranged bifid bracts and axillary fertile shoots. Fertile shoots bearing twenty-five to thirty sterile scales and one to two fertile scales (rarely three to five) positioned adjacent to primary axis. One terminal inverted ovule per fertile scale. Ovules bilaterally symmetrical and winged, with rounded or cordate base and attenuated micropyle. Nucellus free from integument distal to chalaza.
systematic position:
Coniferales, Lebachiaceae, Lebachia
typeseries:
Holotype. Slides, peels, and remaining portions of specimen M26; reposited in the Palaeobotanical Herbarium, Ohio University, as numbers: 3834-3851; 3867-3912; 3968-4092; 4267, and represented herein as Plate 9, fig. 5; Plate 10, figs. 1-3,5,6; Plate 11, figs. 1,3-6; Plate 12, fig. 4; Plate 13, figs. 1,3,5; Plate 14, figs. 1-8.
Paratypes . Specimens M147 and M148 reposited as above, as numbers 4093-4147; 4234-4251, and 3855-3865; 4160-4218; 4260-4262; 4268, respectively, and figured herein as (MI47) Plate 9, figs. 1,4, and (MI48) Plate 11, figs . 2, 5, 7; Plate 12, figs. 5,7,8; Plate 13, figs. 1,4,6; Plate 15, figs. 1-3,5-7 ; Plate 16, figs. 1-3 .
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.
systematic position:
Simple Paleozoic conifers, Emporiaceae, Emporia
Validation of the names Emporiaceae, Emporia, and Emporia lockardii
, “Validation of the names Emporiaceae, Emporia, and Emporia lockardii”, Taxon, vol. 52, pp. 327–328, 2003.
