Hydrangea microcalyx SIEBER

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 : 70

Hydrangea microcalyx SIEBER

Pl. 19, Fig. 3

1880 Hydrangea microcalyx SIEBER , p. 16, pro parte, fig. 26–27, 31.

1961 Paliurus thurmannii HEER ; Knobloch, p. 287, pl. 11, fig. 11.

Petaloid sepal entire-margined, described by Knobloch (1958, as Paliurus thurmannii translated from Czech) as follows: “The main vein is straight and accompanied on both sides by bent basal veins running towards the apex. The outer side of the basal veins is bordered by small loops. The inner area between main veins shows irregularly disposed areoles”. The only specimen available is 18 mm long and 13 mm wide,

D i s c u s s i o n. The single petaloid sepal recovered at Knížecí was erroneously assumed by Knobloch (1961) to represent a leaf impression. Similar, more complete remains of Hydrangea microcalyx are also known from Kučlín ( Kvaček and Teodoridis 2011), Suletice-Berand ( Kvaček and Walther 1995) and Seifhennersdorf ( Walther and Kvaček 2007).

M a t e r i a l s t u d i e d: One sepal impression,

NM-G8585.