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Brunoa
Genus Brunoa Artabe, Zamuner, D.W. Stev. Bot. Rev. (Lancaster), 70(2): 122. 3 Sep 2004
- Name
- Brunoa
- Rank
- Genus
- Authors (Pub.)
- Artabe A. E.
Zamuner A. B.
Stevenson D.
- Publication
- Two new petrified cycad stems, Brunoa gen. nov. and Worsdellia gen.
nov., from the Cretaceous of Patagonia (Bajo de Santa Rosa, Río Negro Province), Argentina [2004/9]
- Journal
- Botanical Review
- Volume
- 70
- Issue
- 2
- Page number
- 122
- Year
- 2004
- Parent Taxon
- [Family] Encephalartaceae
- Fossil Status
- stems
- Type
- Brunoa santarrosensis
- Diagnosis
- Cataphyll and leaf bases in alternating cycles. Polyxylic stem covered by
cataphylls and persistent rhomboidal foliar bases. Vascular cylinder with six rings of collateral vascular bundles with phloem toward the outside and divided into fanlike sectors by multiseriate, parenchymatous rays. Foliar traces run irregularly, and as they pass through wide rays to the outer cortex they curve, producing a girdling configuration.
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