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:genus:913E1911-93F4-4C94-9932-71D9685ACE65 genus
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Chengia

Genus Chengia Y. Yang, L.-B. Lin, Q. Wang BMC Evol. Biol., 13(72): 8. 27 Mar 2013
Name
Chengia
Rank
Genus
Authors (Pub.)
Yang Y. Lin L.-B. Wang Q.  
Publication
Chengia laxispicata gen. et sp. nov., a new ephedroid plant from the Early Cretaceous Yixian Formation of western Liaoning, Northeast China: evolutionary, taxonomic, and biogeographic implications [2013/3]
Journal
BMC Evolutionary Biology
Volume
13
Issue
72
Page number
8
Year
2013
Parent Taxon
[Phylum] Gnetophyta
Fossil Status
reproductive organs
Type
Chengia laxispicata
Diagnosis
Reproductive shoots branch oppositely at swollen nodes. Internodes bear numerous longitudinal striations. Leaves that subtend lateral branches are long and linear. Female spikes are terminal to twigs or are subtended by the leaf, possessing multiple pairs of loosely arranged female reproductive units. Nodes and internodes of female spikes prominent. Female reproductive units consist of decussately opposite seeds and subtending bracts. Seeds enveloped, with distal micropylar tube.
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