Carya cf. tomentosa Nuttal, 1818

Stults, DZ & Axsmith, BJ, 2015, New plant fossil records and paleoclimate analyses of the late Pliocene Citronelle Formation flora, U. S. Gulf Coast, Palaeontologia Electronica (New York, N. Y.: 1991) 2 (6), pp. 1-35 : 10

Carya cf. tomentosa Nuttal, 1818

Figure 3.3, 3.6

Description. Ten Carya specimens show features common to leaflets of extant C. tomentosa . Laminae are mostly obovate, although some are elliptical or ovate and L:W ratios are ~ 2:1. Leaflet size ranges from 5.3–9.9 cm long and 2.2–3.8 cm wide. Bases are mostly symmetrical, although a few are asymmetrical, and most are cuneate. Secondaries are regularly spaced with 45º angles apically and 60º angles basally. Tertiary veins are generally opposite percurrent. Teeth are of one order, uniformly placed 4–5 per cm, and usually occurring along the distal half of the lamina; no teeth or very few small teeth are noticeable basally. Between-teeth sinuses are angular; tooth shapes are straight distally/convex proximally. The principal tooth vein terminates at the tooth apex.

Site occurrence. Scarborough School.

Remarks. Today Carya tomentosa is common in upland sites throughout eastern North America.

Figures

FIGURE 3. Representative Juglandaceae from the Citronelle Formation (continued). 1. Carya cf. aquatica leaflet (UF 19315–062069), scale bar equals 5 mm. 2. Epifluorescence micrograph of leaf from Figure 3.1, note peltate hairs, scale bar equals 125 µm. 3. Carya cf. tomentosa leaflet (UF 19315–062070), scale bar equals 2 cm. 4. Carya species #3 partial leaflet (UF 19210–062071), scale bar equals 5 mm. 5. Carya cf. aquatica leaf margin of Figure 3.1, scale bar equals 2.5 mm, 6. Carya cf. tomentosa leaf margin of Figure 3.2, scale bar equals 5 mm. 7. Carya species #3 of Figure 3.4 leaf margin, scale bar equals 2.5 mm.