Chengia

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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covered by the International Code of Nomenclature for Algae, Fungi, and Plants (formerly International Code of Botanical Nomenclature) and International Code of Zoological Nomenclature
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