Ampelopsis rotundata CHANDLER

Dedicated in memory of the late FrantiŠek Holý (1935 - 1984), an eminent Czech palaeobotanist, Holý, František, Kvaček, Zlatko & Teodoridis, Vasilis, 2012, A Review Of The Early Miocene Mastixioid Flora Of The Kristina Mine At Hrádek Nad Nisou In North Bohemia (The Czech Republic), Acta Musei Nationalis Pragae Series B 68 (3 - 4), pp. 53-118 : 69

Ampelopsis rotundata CHANDLER

Pl. 6, figs 10-11

1926 Ampelopsis rotundata CHANDLER , p. 31, pl. 5, figs 5a-c (Hordle).

1977a Ampelopsis rotundata CHANDLER ; Holý, p. 112 (Hrádek/N., Kristina Mine).

2003 Ampelopsis rotundata CHANDLER ; Teodoridis, pp. 23-24, pl. 7, figs 5-6 (Hrádek/N., drill cores).

Seeds shortly broadly obovoid, 2.8–3.7 mm long and 2.3–3.2 mm wide, apex broadly rounded, often slightly flattened from above and from the ventral side, only with a slight incision, base continuously cuneate, pointed, dorsal side with strong oval chalaza connected with raphe, ventral side strongly convex, lateral furrows deep, strongly diverging ( Holý 1975, p. 78, pl. 17, figs 1-4).

D i s c u s s i o n: According to Holý (1975) the seeds are identical with those from the Eocene of England ( Chandler 1926). Similar but bigger are those of A. monasteriensis KIRCHHEIMER. An identical species appears to be A. heeri DOROFEEV (1963b) and very close two other Siberian species A. rotundatoides DOROFEEV (1957, p. 645 , Kozjulino) and A. tertiaria DOROFEEV (1963a, pp. 217-8) . Czeczott et al. (1959) described very similar material as Vitis teutonica A. BRAUN from Turów. Mai (1997) discussed in detail the taxonomical status and suggested the living A. heterophylla SIEBOLD et ZUCC. , A. fargesii GAGNEP. and A. megaphylla DIELS et GILG from East Asia as plants producing similar seeds.

M a t e r i a l: 35 seeds, G 3042, 8842-43.

Tetrastigma PLANCHON