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 © 2014-2024

IDNAME urn:idName:ifpni.org:genus:9B1E97BA-8907-4DEA-9325-26503C588E5B genus
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Nothostigma

Genus Nothostigma Doweld Taxon, 66(6): 1461. 22 Dec 2017
Name
Nothostigma
Rank
Genus
Authors (Pub.)
Doweld A. B.  
Publication
A review of the nomenclature of Cyclostigma (Cyclostigmatales: Cyclostigmataceae; fossil Isoetophyta) [2017/12]
Journal
Taxon
Volume
66
Issue
6
Page number
1461
Year
2017
Parent Taxon
[Class] Lepidodendropsida
Fossil Status
stems (with branches)
Type
Nothostigma pacificum
Diagnosis
Stems with small branches, bearing very (and variably) approximate prominent microphyll cushions having elliptical microphyll scar without cicatricules. Microphyll cushions separated by vertical, sharp, undulate lines, providing an open connection between the succeeding cushion fields in the vertical row. Scars rounded in the upper half, lower half consisting of two lateral sides meeting in a sharp point. Surface of older branches almost smooth or ornamented with undulating lines. Microphylls long, narrow, sharply pointed, with a distinct midrib. Ligule not observed.

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