Taxonomic History, Morphology, and Reproductive Biology of the Tribe Posoquerieae (Rubiaceae, Ixoroideae)1

@inproceedings{Delprete2009TaxonomicHM,
  title={Taxonomic History, Morphology, and Reproductive Biology of the Tribe Posoquerieae (Rubiaceae, Ixoroideae)1},
  author={Piero G. Delprete},
  year={2009}
}
Abstract The tribe Posoquerieae was recently described to include the genera Posoqueria Aubl. and Molopanthera Turcz. based on floral morphology, palynology, the presence of the pollen catapult mechanism, and molecular phylogenetic evidence. The floral morphology of these two genera was first recognized as unique in the Rubiaceae by Schumann. Both genera have stamens initially united into an ellipsoidal structure held at an oblique position, with the ventral stamen that springs forward when… Expand
Phylogenetic relationships and new tribal delimitations in subfamily Ixoroideae (Rubiaceae)
TLDR
A revised tribal classification, including the description of five new tribes, Airospermeae, Augusteae, Scyphiphoreae, Steenisieae and Trailliaedoxeae is provided, to resolve the phylogeny and assess the tribal delimitations in the expanded Ixoroideae. Expand
Rubiacearum Americanarum Magna Hama Pars XXVII: Six New Species and a New Taxonomic View of Posoqueria
TLDR
A new taxonomy based on corolla form and size, the length and symmetry of the filaments, and fruit morphology finds the name P. panamensis (Walp. & Duchass.) Walp. Expand
Systematics, taxonomy and floristics of Brazilian Rubiaceae: an overview about the current status and future challenges
TLDR
The present work is to offer an overall view of the most recent family classification with emphasis on the genera of Rubiaceae occurring in Brazil, and to indicate particular taxa that are still in need of phylogenetic and taxonomic studies. Expand
Sipaneopsis (Sipaneeae, Ixoroideae): A unique flowering process in the family Rubiaceae and its taxonomic significance
TLDR
The differences in flower morphology and process of anthesis between the two genera provide an important set of significant taxonomic and diagnostic characters that can be used to distinguish them. Expand
Leaf anatomy and micromorphology of six Leaf anatomy and micromorphology of six Leaf anatomy and micromorphology of six Leaf anatomy and micromorphology of six Leaf anatomy and micromorphology of six Posoqueria Aublet species (Rubiaceae)
TLDR
Anatomical leaf characters could be used in the recognition of six species of Posoqueria studied, such as anticlinal wall of epidermal cells, wax deposition, trichomes and shape of the leaf margin. Expand
Reproductive outputs to floral trait variation in Nicotiana alata (Solanaceae) in Southern Brazil
TLDR
Although the hawkmoths are recognized for their unpredictability, the visits’ efficiency may contribute to adequate pollen loads in flowers with shorter longevity, which may indicate density-dependent effects in reproductive outputs and intraspecific interactions as one of the potential ecological factors impacting flowering time. Expand
Low abundance of long-tongued pollinators leads to pollen limitation in four specialized hawkmoth-pollinated plants in the Atlantic Rain forest, Brazil
TLDR
Sexual reproduction of these highly specialized hawkmoth-pollinated species is impaired by competition among plants for pollinators, in conjunction with the low abundance and diversity of long-tongued pollinators. Expand
Glucosidic iridoids from Molopanthera paniculata Turcz. (Rubiaceae, Posoquerieae)
A B S T R A C T One new veratroyl derivative, together with the known iridoids barlerin and shanzhiside methyl ester were isolated from Molopanthera paniculata. The structures of compounds wereExpand

References

SHOWING 1-10 OF 23 REFERENCES
Pollen morphological support for the Catesbaeeae-Chiococceae-Exostema-complex (Rubiaceae)
TLDR
Pollen and orbicule morphology proved to be a powerful tool to delimit the Catesbaeeae-Chiococceae-Exostema complex and the overall delimitation of the complex is corroborated with pollen data. Expand
Phylogeny of the Gardenieae (Rubiaceae)
Abstract The phylogeny of Gardenieae (Rubiaceae) is evaluated using 70 morphological and anatomical characters and 81 terminal taxa. After successive reweighting of the characters and modifiedExpand
Exotesta morphology of the Gardenieae — Gardeniinae (Rubiaceae)
TLDR
It is concluded that data on exotesta morphology alone does not support any of the previously proposed informal groups, but may still be an important character to deduce phylogenetic relationships, primarily on a level just above the genus. Expand
A phylogenetic study of the tribe Sipaneeae (Rubiaceae, Ixoroideae), using trnL–F and ITS sequence data
TLDR
It is indicated that tribe Sipaneeae is monophyletic, and its placement within Ixoroideae is confirmed, indicating that the herbaceous habit evolved two times in the tribe. Expand
Pollen morphology of the Gardenieae-Gardeniinae (Rubiaceae)
TLDR
Pollen grains of 107 species of 61 genera of the Gardeniinae were investigated by scanning electron and light microscopy and found most genera are fairly stenopalynous, but in the neotropical genera Alibertia and Randia several different types of pollen are encountered. Expand
Circumscription of the tribeCinchoneae (Rubiaceae)—a cladistic approach
TLDR
It is concluded that the tribeCinchoneae, in order to be monophyletic, should be restricted to compriseCapirona, Cephalodendron, Cinchona, Cosmibuena, Dolicholobium, Ferdinandusa, Joosia, Ladenbergia, Macrocnemum, andRemijia. Expand
A TRN LF CPDNA SEQUENCE STUDY OF THE CONDAMINEEAE-RONDELETIEAE-SIPANEEAE COMPLEX WITH IMPLICATIONS ON THE PHYLOGENY OF THE RUBIACEAE 1
DNA sequences from the chloroplast trnL-F region of 154 Rubiaceae and 11 outgroup taxa were analyzed cladistically. An emphasis was placed on the tribes Rondeletieae, Sipaneeae, and Condamineeae.Expand
A trnL-F cpDNA sequence study of the Condamineeae-Rondeletieae-Sipaneeae complex with implications on the phylogeny of the Rubiaceae.
DNA sequences from the chloroplast trnL-F region of 154 Rubiaceae and 11 outgroup taxa were analyzed cladistically. An emphasis was placed on the tribes Rondeletieae, Sipaneeae, and Condamineeae.Expand
SELF‐INCOMPATIBILITY SYSTEMS IN THE RUBIACEAE OF A TROPICAL LOWLAND WET FOREST
TLDR
The objective of the study was to estimate the proportion of self-compatible and self-incompatible species in a sample of Rubiaceae from one community, and to determine the site in the pistil at which self-pollen is inhibited in the self- incompatible species. Expand
Notes on the Rubiaceae of Surinam
In my revision of the Rubiaceae in Pulle’s Flora of Surinam two genera, viz. Pagamea and Perama, which are now usually included in this family, are relegated to an appendix. On account of itsExpand
...
1
2
3
...