Gaga, a New Fern Genus Segregated from Cheilanthes (Pteridaceae)

@inproceedings{Li2012GagaAN,
  title={Gaga, a New Fern Genus Segregated from Cheilanthes (Pteridaceae)},
  author={Fay-Wei Li and Kathleen M Pryer and Michael D. Windham},
  year={2012}
}
Abstract Ongoing molecular phylogenetic studies of cheilanthoid ferns confirm that the genus Cheilanthes (Pteridaceae) is polyphyletic. A monophyletic group of species within the hemionitid clade informally called the “C. marginata group” is here shown to be distinct from its closest relatives (the genus Aspidotis) and phylogenetically distant from the type species of Cheilanthes. This group is here segregated from Cheilanthes as the newly described genus, Gaga . In this study, we use… 
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Abstract The phylogenetic position of Cheilanthes brandegeei, a fern endemic to the Baja California Peninsula of Mexico, was investigated using three plastid markers (atpA, rbcL, trnG-R) and
Cheilanthes ecuadorensis: A New Species of Cheilanthes s. s. (Pteridaceae) from Northern South America
Abstract Ongoing research on the taxonomically complex genus Cheilanthes (Pteridaceae; Cheilanthoideae) has resulted in the identification of a new species from Loja Province in Ecuador, Cheilanthes
Further progress towards the delimitation of Cheilanthes (Cheilanthoideae, Pteridaceae), with emphasis on South American species
TLDR
The phylogenetic analysis showed that most Cheilanthes species are related to the genus Hemionitis, constituting different groups according to their distribution; moreover, three species—C.
Heinrichsia cheilanthoides gen. et sp. nov., a fossil fern in the family Pteridaceae (Polypodiales) from the Cretaceous amber forests of Myanmar
TLDR
Heinrichsia cheilanthoides further substantiates the suggestion that the Cretaceous forests of Myanmar were home to a rich fern flora and provides a new calibration point to test and refine molecular clock‐based concepts of the evolutionary history of the Pteridaceae.
Toward a monophyletic Cheilanthes: The resurrection and recircumscription of Myriopteris (Pteridaceae)
TLDR
An updated taxonomy for one monophyletic clade comprising 47 primarily North and Central American taxa usually included in Cheilanthes is formalized, and the genus Myriopteris is resurrected to accommodate these taxa.
Patterns of Diversification in the Xeric-adapted Fern Genus Myriopteris (Pteridaceae)
TLDR
A phylogeny for the myriopterid clade is infer and key morphological characters across this phylogeny are examined, along with a brief discussion of the three well-supported Myriopteris subclades, and a review of reproductive mode and known ploidy levels for members of this early diverging lineage of cheilanthoid ferns.
The Hybrid Origin of Adiantum meishanianum (Pteridaceae): A Rare and Endemic Species in Taiwan
TLDR
The nuclear phylogeny reconstructed based on the low-copy marker, CRY2 first intron, reveals that A. meishanianum has three types of sequences: one type groups with sequences of sexual diploid individuals of A. philippense and the other two group with Sequence of the sexual tetraploid A. malesianum, suggesting A.philippense is the paternal species.
Reproductive expression of cheilanthoid ferns (Pteridaceae) from South America
TLDR
The characteristics of the reproductive stage of eight neotropical cheilanthoid ferns species showed that the species differ in the number of spores by sporangium, being 32 and/or 64.
Molecular phylogeny of the fern family Blechnaceae (Polypodiales) with a revised genus‐level treatment
TLDR
This work outlines and explains a plan to resolve the polyphyly of Blechnum by recognizing additional, monophyletic, segregate genera, each corresponding to a highly supported clade across all analyses.
Do two South American species of Cheilanthes (Pteridaceae) traditionally linked to the Cheilanthes marginata group, belong to Gaga ?
TLDR
The phylogenetic positions of Cheilanthes hieronymi and C. poeppigiana are tested using DNA sequences of plastid matK and rbcL markers and corroborated that the morphological similarities between the two species and the genus Gaga were resulted from convergence.
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