taxonID	type	description	language	source
6B593F44FFD6547FFCA2EEC936D7F819.taxon	description	Krasser (1920: 4) listed only one horsetail species (Equisetites columnaris), because he considered E. beanii to be the thicker stems belonging to E. columnaris. In this case, E. beanii would represent the older, defoliated stems of E. columnaris (Schweitzer et al. 1997: 135 – 141). If both taxa belong to the same biological species, the specific name E. columnaris would have priority. In the Jurassic flora of Yorkshire, both species are present, with E. columnaris being more common than E. beanii. Both species may occur in the same deposits, but, at some localities, only one species occurs. For example, only E. columnaris is known from Hasty Bank, while the cliffs around Scarborough have yielded only E. beanii. One plant fossil (Lov. B 49.1 – 2; Pl. 1, Figs 10 – 11) represents a nodal fragment of Schizoneura SCHIMPER et MOUGEOT, 1844 with microphylls, which seem to arise from the same position on the axis and are basally connate. Krasser (1920: 9) indicated that this fragment might represent a badly preserved basal frond fragment of Dictyophyllum rugosum LINDLEY et HUTTON, 1834, whereas the label designates it Equisetites beanii (“ Asterophyllites Beblätterung ”). Furthermore, Krasser (1920) mentioned that the same specimen contained a fragment of Sagenopteris goeppertiana DE ZIGNO, 1865 (on p. 8) and Nilssonia compta (PHILLIPS) BRONGNIART, 1828 (on p. 9), but none of those could be identified on the slab.	en	Kustatscher, Evelyn, Scanu, Giovanni G., Kvaček, Jiří, Van Konijnenburg-Van Cittert, Johanna H. A. (2016): The Krasser Collection In The Faculty Of Sciences, Charles University, Prague - New Insights Into The Middle Jurassic Flora Of Sardinia. Fossil Imprint 72 (3 - 4): 140-154, DOI: 10.14446/FI.2016.140, URL: http://fi.nm.cz/clanek/the-krasser-collection-in-the-faculty-of-sciences-charles-university-prague-new-insights-into-the-middle-jurassic-flora-of-sardinia/
6B593F44FFD5547DFCDDE9363409FC1D.taxon	description	Elatides williamsonii (LINDLEY et HUTTON) NATHORST, 1897 is also common (Pl. 3, Figs 5, 9); it is characterized by elongated leaves of 5 – 8 mm length and 1 – 2 mm width, arranged in a loose helix (Lov. B 14.1 – 2, 17.1 – 2, 27.1 – 2, 28.2 – 3, 29, 51.2, 72.1 – 3, 78, 90, 94, 107.2, 122.1 – 3, 127.6, B, C 1 – 5). Krasser (1920: 18) identified this species as Pagiophyllum williamsonii (BRONGNIART) SEWARD, 1900. Two specimens (Lov B 9, 127.9) with linear leaves are identified as Elatocladus sp. Several shoot fragments with broad, leathery leaves are assigned to Brachyphyllum sp. (Lov. B 56, 58), and other shoot fragments with very small (<5 mm long, 1 mm wide) leaves to Pagiophyllum sp. (Lov. B 75.1 – 2, 99, 124, 126, 127.1 – 2, 127.5, 127.7 – 9) (Pl. 3, Fig. 8). The wood fragment (Lov. B 128), labelled as Dadoxylon sp. might belong to Agathoxylon GREGUSS, 1952. Krasser (1920: 20) established Araucarites sardinicus (KRASSER) KRASSER, 1920 (formerly Cycadeospermum sardinicum) for sub-triangular ovuliferous scales (Lov. B 50, 50.1 – 2, 55, 56, 57.1 – 2), each with a large single seed (Pl. 3, Figs 2 – 3). The scales are 20 – 25 mm long and 20 – 22 mm wide, with a central depression or seed of 15 – 17 × 10 – 12 mm. The ovuliferous cones (Lov. B 127.8, B) are too fragmentary for determination. Fragments resembling pine-like leaves, with a transversely wrinkled lamina (Lov. B 89, 91) were ascribed by Krasser (1920: 19) to Pityophyllum nordenskioldii (HEER) SEWARD, 1919; unfortunately, no cuticle is preserved to confirm this attribution.	en	Kustatscher, Evelyn, Scanu, Giovanni G., Kvaček, Jiří, Van Konijnenburg-Van Cittert, Johanna H. A. (2016): The Krasser Collection In The Faculty Of Sciences, Charles University, Prague - New Insights Into The Middle Jurassic Flora Of Sardinia. Fossil Imprint 72 (3 - 4): 140-154, DOI: 10.14446/FI.2016.140, URL: http://fi.nm.cz/clanek/the-krasser-collection-in-the-faculty-of-sciences-charles-university-prague-new-insights-into-the-middle-jurassic-flora-of-sardinia/
