Conantiopteris schuchmanii, gen. et sp. nov., and the Role of Fossils in Resolving the Phylogeny of Cyatheaceae s.l.

@article{Lantz1999ConantiopterisSG,
  title={Conantiopteris schuchmanii, gen. et sp. nov., and the Role of Fossils in Resolving the Phylogeny of Cyatheaceae s.l.},
  author={Trevor C. Lantz and Gar W Rothwell and Ruth A. Stockey},
  journal={Journal of Plant Research},
  year={1999},
  volume={112},
  pages={361-381}
}
Conantiopteris schuchmanii gen. et sp. nov. The specimen, 23.2 cm long and 11.7 cm wide, shows helically arranged persistent frond bases embedded in adventitious roots, and is clothed by multicellular trichomes. A parenchymatous pith with mucilaginous cells and sclerotic nests is surrounded by an amphiphloic distyostele, parenchymatous inner cortex, and outer sclerenchymatous cortex. Sclerenchyma also surrounds the cauline vasculature and leaf traces. Medullary and cortical bundles are absent… 

Figures and Tables from this paper

Stramineopteris aureopilosus gen. et sp. nov.: Reevaluating the Role of Vegetative Anatomy in the Resolution of Leptosporangiate Fern Phylogeny
TLDR
A comparison of this distinctive combination of characters to previously described fern rhizomes reveals that vegetative anatomy may be more taxonomically diagnostic for a broader range of ferns than is commonly thought.
Combining Characters of Pteridaceae and Tree Ferns: Pterisorus radiata gen. et sp. nov., a Permineralized Lower Cretaceous Filicalean with Radial Sori
TLDR
An anatomically preserved leptosporangiate filicalean that combines characters of the Pteridaceae and tree ferns has been discovered in the Lower Cretaceous Apple Bay flora on Vancouver Island, Canada, providing direct evidence for the third major radiation of Filicales.
New cyathealean tree ferns from the Cretaceous of South Africa: Natalipteris wildei gen. et sp. nov. and Kwazulupteris schaarschmidtii gen. et sp. nov.
TLDR
Two new genera and species of permineralized tree ferns, Natalipteris wildei and Kwazulupteris schaarschmidtii, are defined and described in detail, which present features that preclude their placement in the recognized families of Cyatheales.
A new tree fern stem, Heilongjiangcaulis keshanensis gen. et sp. nov., from the Cretaceous of the Songliao Basin, Northeast China: a representative of early Cyatheaceae
Abstract A new genus and species of Cretaceous Cyatheacean tree fern, Heilongjiangcaulis keshanensis gen. et sp. nov., is erected for several permineralized stems collected at the Keshan County in
Cretaceous tree ferns of western North America: Rickwoodopteris hirsuta gen. et sp. nov. (Cyatheaceae s.l.)
TLDR
A distinctive new permineralized stem from marine deposits of western North America provides additional evidence for the diversity of Upper Cretaceous tree ferns and reveals the presence of a new genus and species of tree f Ferns, Rickwoodopteris hirsuta gen. sp.
Paralygodium vancouverensis sp. nov. (Schizaeaceae): Additional Evidence for Filicalean Diversity in the Paleogene of North America
TLDR
The unique combination of characters displayed by each of the fossil species reveals the presence of several extinct schizaeaceous lineages and supports interpretations that the diversity of Schizaeaceae s.l. was greater during the Cretaceous and Paleogene than it is today.
Cyathea cranhamii sp. nov. (Cyatheaceae), anatomically preserved tree fern sori from the Lower Cretaceous of Vancouver Island, British Columbia.
Permineralized cyatheaceous sori occur among remains of conifers, fungi, and other plants in newly discovered calcareous concretions from Early Cretaceous (Barremian) marine sediments of Vancouver
Cyathealean Antarctic ferns from the Aptian Cerro Negro Formation: Rafaherbstia nishidai gen. et sp. nov. and associated fertile organs
Abstract New remains corresponding to Cyathealean tree ferns are described for the Aptian Cerro Negro Formation at Byers Peninsula, Livingston Island (South Shetland Islands, Antarctica). A new genus
Further evidence supporting high diversity of cyathealean tree ferns in the Early Cretaceous of Antarctica
Abstract Two new specimens of a cyathealean fern stems collected from the Lower Cretaceous (Aptian) Cerro Negro Formation, which crops out at the South Shetland Islands, Antarctica, are described in
Anatomically preserved Woodwardia virginica (Blechnaceae) and a new filicalean fern from the middle Miocene Yakima Canyon flora of central Washington, USA.
TLDR
These two ferns demonstrate that filicalean fern assemblages similar to those of extant temperate floras were well established in western North America by the middle Miocene and further emphasize the exceptional species longevity of some homosporous pteridophytes.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 77 REFERENCES
COMPARATIVE STUDIES OF THE NODAL AND VASCULAR ANATOMY IN THE NEOTROPICAL CYATHEACEAE. II. SQUAMATE GENERA
TLDR
Vascular tissue development in the mature stems of the six squamate genera of the Cyatheaceae is described, showing striking similarities in both anatomical and morphological characters, and constitute a natural grouping.
Anatomical Studies of the Neotropical Cyatheaceae. I. Alsophila and Nephelea
TLDR
An attempt is made to determine whether the proposed phyletic relationship betweenA Isophila and Nephelea is supported by anatomical data.
The developmental anatomy of Metaxya rostrata (Filicales: Metaxyaceae)
TLDR
The systematically problematic fern Metaxya rostrata is investigated, and features of its organography, shoot vascular anatomy and development, soral initiation and early development, and gametophyte structure are described.
Tree fern indusia: studies of development and diversity
Early developmental stages of the sorus in Cyathea fulva show that the indusium is initiated from cells of the protoderm on the abaxial leaf surface, closer to the midvein than the margin of the
Trends of Specialization in the Stipe Anatomy of Dennstaedtia and Related Genera
TLDR
The stipe anatomy of the dennstaedtioid and cyatheoid ferns shows greater structural complexity than that of any other extant group of f Ferns, and the above genera were considered the most primitive of 11 subfamilies.
Cine Analysis of the Medullary Bundle System in Cyathea fulva1
TLDR
This study examines in three dimensions the medullary auxiliary network of Cyathea fulva using the technique of surface cine photography and the possible functions of these bundles are discussed.
The disposition of Trichopteris (Cyatheaceae)
TLDR
Working from Tryon's (1970) generic concepts, it is possible to define readily recognizable and coherent genera in the Cyatheaceae sensu stricto by including in Cyathea the genus Trichopteris and the New World species considered to be Sphaeropteris, except for the S. horrida group.
Calochlaena, a New Genus of Dicksonioid Ferns
TLDR
Evidence is summarized for the generic distinctness of the two groups and a new genus for the species of subg.
Vascular organization of the rhizome of Cibotium barometz
TLDR
The anatomy of the Cyatheaceae, including some of the species of Cibotium, has been studied recently by Holttum and Sen (1961) and by Sen (1964), who have pointed out the significance of rhizome anatomy in assessing the phylogenetic relationships of these ferns.
Phylogenetic relationships of dennstaedtioid ferns: evidence from rbcL sequences.
TLDR
Relationships among genera and families of dennstaedtioid ferns are clarified, and phylogenetic analysis of rbcL sequence data suggests relationships of some problematical genera, such as Monachosorum, Calochlaena, and Lonchitis.
...
1
2
3
4
5
...