Platanus neptuni (ETTINGSHAUSEN) BŮŽEK, HOLÝ et KVAČEK

Kvaček, Zlatko, Teodoridis, Vasilis & Zajícová, Jana, 2015, Revision Of The Early Oligocene Flora Of Hrazený Hill (Formerly Pirskenberg) In Knížecí Near Šluknov, North Bohemia, Acta Musei Nationalis Pragae Series B 71 (1 - 2), pp. 55-102 : 62

Platanus neptuni (ETTINGSHAUSEN) BŮŽEK, HOLÝ et KVAČEK

Pl. 6, Fig. 5, Pl. 7, Fig. 1–7

1866 Sparganium neptuni ETTINGSHAUSEN , p. 31, pl. 7, fig. 9–15.

1961 Comptonia diforme (STERNBERG) BERRY ; Knobloch, p. 257, pro parte, pl. 3, fig. 9 left [NM-G2830b].

1961 Ceratopetalum bilinicum ETTINGSHAUSEN ; Knobloch, p. 277, pl. 10, fig. 12.

1967 Platanus neptuni (ETTINGSHAUSEN) BŮŽEK, HOLÝ et KVAČEK , p. 205, pl. 1–4.

Fragmentary leaves obovate, 37–42 mm long and 7–11 mm wide, on the margin widely blunt regularly toothed, partly entire, venation semicraspedodromous, partly eucamptodromous, adaxial cuticle composed of polygonal cells with regularly sinuate anticlines, abaxial cuticle showing large anomocytic stomata and compound trichome bases dispersed on abaxial leaf side. Female infructescence ca. 10 mm in diameter composed of narrow fruitlets projected by a short style out of the infructescence outline. Isolated stamen obconical, with two longitudinal pollen sacks and a terminal thickened cap. Strap-like stipules parallel-veined, cut at the base.

D i s c u s s i o n. The single available infructescence was wrongly interpreted as belonging to Comptonia by Knobloch (1961). All the other organs fit within the characteristics recognized previously in this species ( Bůžek et al. 1976, Kvaček and Manchester 2004). The affinity of these foliage fragments is confirmed by the epidermal structure showing large anomocytic stomata with widely open ledges and compound trichome bases (Pl. 6, Fig. 5) recorded in the previous studies.

M a t e r i a l s t u d i e d: Fragmentary leaves, partly with cuticle structure, NM-G2887, NM-G11503a, b, NM-G11504a, b, EK 259–262; female infructescence, NM-G2830b; isolated stamen, NM-G11998c; stipule, EK 263.