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Rickwoodopteris
Genus Rickwoodopteris Stockey, G.W. Rothwell Rev. Palaeobot. Palynol., 132(1-2): 105. Nov 2004
- Name
- Rickwoodopteris
- Rank
- Genus
- Authors (Pub.)
- Stockey R. A.
Rothwell G. W.
- Publication
- Cretaceous tree ferns of western North America: Rickwoodopteris hirsuta gen. et sp. nov. (Cyatheaceae s.l.) [2004/11]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 132
- Issue
- 1-2
- Page number
- 105
- Year
- 2004
- Parent Taxon
- [Order] Dicksoniales
- Fossil Status
- stems
- Type
- Rickwoodopteris hirsuta
- Diagnosis
- Stem upright, enclosed by homogeneous
hypodermis, covered by persistent rachis
bases, adventitious roots, and dense indument of both
uniseriate trichomes and enlarged multiseriate, thickwalled
trichomes. Cauline vasculature an amphiphloic
dicytostele, meristeles producing ca. six- to ten-parted
frond trace; medullary and cortical bundles absent
from stem; medullary and cortical cauline bundles
absent. Leaf gap oval with no constrictions, length/
width ratio 2.5–3.0:1. Stem and leaf-trace vasculature
accompanied by sclerenchymatous sheaths; monarch
to diarch adventitious roots diverge from cauline
meristeles between diverging frond bases.
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