Helicostyloxylon C.M.Mart.Mart.

Plant Fossil Names Registry Number: PFN003049

Act LSID: urn:lsid:plantfossilnames.org:act:3049

Author: C. M. Martinez Martinez

Rank: genus

Reference: Martinez Martinez, C. M. (2023): New Records of Moraceae from the Upper Miocene of Northeastern Argentina. – Ameghiniana 60(1): 78–96.

Page of description: 81

Type

Original diagnosis/description

Growth rings boundaries distinct; wood diffuseporous; vessels mainly solitary, few radial multiples and rarely in clusters, with tyloses, vessels size from small to moderate; simple perforation plates; intervessel pits alternate, circular to oval; vessel-axial parenchyma and vessel-ray parenchyma pits similar to intervessel pits; septate and non-septate fibres, polygonal in outline, thin to thick-walled; axial parenchyma vasicentric, unilateral, confluent and 3–8 cells per parenchyma strand; rays 1– multiseriate, body ray of procumbent cells with 1–4 rows of upright and/or square marginal cells and also procumbent, square and upright cells mixed throughout the ray; 1–2 laticifers/tanniniferous tubes in some rays; prismatic crystals in rays cells; interconnected rays.

Etymology

The generic name refers to the similarity with the extant Helicostylis Trécul, 1847.