Ephedrispermum lusitanicum RYDIN, K.R.PEDERSEN, P.R.CRANE et E.M. FRIIS , 2006, RYDIN, K. R. PEDERSEN, P. R. CRANE et E. M. FRIIS, 2006

Friis, Else Marie, Crane, Peter R. & Pedersen, Kaj Raunsgaard, 2019, The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community, Fossil Imprint 75 (2), pp. 153-257: 170-171

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http://doi.org/ 10.2478/if-2019-0013

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Ephedrispermum lusitanicum RYDIN, K.R.PEDERSEN, P.R.CRANE et E.M. FRIIS , 2006


Ephedrispermum lusitanicum RYDIN, K.R.PEDERSEN, P.R.CRANE et E.M. FRIIS, 2006  

Text-fig. 11d–f View Text-fig

D e s c r i p t i o n a n d r e m a r k s.Chlamydospermous seeds that are four-angled to circular in transverse section, about 0.7 mm long and 0.55–0.6.5 mm wide. The seed envelope is sclerenchymatic with about 40 slightly raised longitudinal ridges ( Text-fig. 11d View Text-fig ). Ephedroid pollen grains have been observed in the micropyles of several specimens and also on the surface of the seed envelope ( Text-fig. 11e, f View Text-fig ).

A f f i n i t y a n d o t h e r o c c u r r e n c e s. Ephedrispermum lusitanicum   is common in the Torres Vedras mesofossil flora and also in the mesofossil flora from Buarcos (the type locality for the genus and species). Seeds of Ephedrispermum   are also known from the Famalicão and Vale de Água mesofossil floras, but these seeds differ in having fewer ridges on the seed envelope and in details of the associated pollen grains. The Famalicão and Vale de Água specimens have been assigned to a separate species E. tenuicostatum E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN ( Friis et al. 2019c)   .

Genus Quadrispermum E.M.FRIIS, K.R.PEDERSEN et P.R.CRANE, 2013