The INTERNATIONAL FOSSIL PLANT NAMES INDEX
Global registry of scientific names of fossil organisms covered by the International Code of Nomenclature for Algae, Fungi, and Plants and the International Code of Zoological Nomenclature © 2014-2022

IDNAME urn:idName:ifpni.org:species:744BCB86-E6A1-DDD9-AA5F-505A02974830 species
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Hopenium tertiarum

Hopenium tertiarum N. Awasthi, R.C. Mehrotra, Anum. Shukla Palaeobotanist, 67(1): 36. 2018
Name
Hopenium tertiarum
Rank
Species
Generic Name
[Genus] Hopenium
Authors (Pub.)
Awasthi N. Mehrotra R. C. Shukla A.  
Publication
Some new fossil woods from the Cuddalore Sandstone of south India [2018]
Journal
Palaeobotanist
Volume
67
Issue
1
Page number
36
Year
2018
Fossil Status
stems (wood)
Stratigraphy
Miocene
Strat. comment
Miocene-Pliocene = Cuddalore Sandstone Formation
Location
Murattandichavadi near Puducherry, Villupuram District, Tamil Nadu, India
Paleoregion
Eurasia (Indostan)
Data for Holotypus
Repository
Birbal Sahni Institute of Palaeosciences, Lucknow, India
Repository Number
BSIP 41588
Diagnosis
Wood diffuse–porous. Growth rings absent. Vessels small to medium, tangential diameter range 90–160 μm, mean 130 μm, mostly solitary, rarely in radial pairs, mostly oval in shape, sometimes compressed to various shapes, evenly distributed, occasionally tylosed; vessel elements range 440–580 μm, mean 513 μm, with oblique to horizontal ends, storied at places; perforations simple; intervessel pits poorly preserved, bordered, alternate, seemingly vestured. Vasicentric tracheids present. Axial parenchyma paratracheal and apotracheal, paratracheal parenchyma intermingled with vasicentric tracheids, forming 1–4 celled sheath around the vessels; apotracheal parenchyma diffuse and in the form of tangential bands enclosing gum canals; parenchyma strands storied; cells thin walled. Rays 1–4 (mostly 3–4) seriate, uniseriates rare, multiseriates up to 100 cells or > 2 mm high and 51–72 μm wide, heterocellular, crystalliferous upright cells interspersed among the procumbent cells all along the rays; tangential height of procumbent and upright or square cells 16–29 μm and 31–86 μm respectively. Fibres thick–walled and non–septate. Gum canals normal, vertical, mostly aligned in tangential rows and enclosed in parenchyma bands, sometimes solitary also, circular to oval, small to very small, 38–85 μm in diameter.

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