Literatur

@article{10.1093/botlinnean/boae011,

title = {Morphological diversity and evolutionary changes of pollinaria in Hoya (Marsdenieae: Apocynaceae)},

author = {Yanfeng Kuang and Raozhen Jia and Michele Rodda and Jingfeng Zhang and Meng Xia and Chenghou Wu and Jingping Liao},

url = {https://doi.org/10.1093/botlinnean/boae011},

doi = {10.1093/botlinnean/boae011},

issn = {0024-4074},

year  = {2024},

date = {2024-01-01},

urldate = {2024-01-01},

journal = {Botanical Journal of the Linnean Society},

pages = {boae011},

abstract = {The pollinarium morphologies of 85 species and four subspecies of Hoya were investigated in the present study. The longest pollinium was found in Hoya multiflora, the widest in H. archboldiana, and the smallest in H. bilobata. Pollinium shape showed the widest variation range of all palynological characters, and nine shapes were distinguished in this study. A pellucid margin was present in the pollinium of 84 taxa, and absent in five species. In total, 10 types of pollinarium were recognized based on the following characters: presence/absence of a pellucid margin and the caudicle wing, the ratio of corpusculum/pollinarium length, width/length of pollinium, and curving orientation of the caudicle wings. Types V and X were found in a greater number of taxa compared with the other eight types. Type V is a combination of obliquely elongate or oblong pollinium, presence of a pellucid margin and caudicle wing, and corpusculum length less than half of the pollinium. Type X combines pollinium with variable shapes, a pellucid margin, unwinged and twisted caudicle, and corpusculum with obvious lateral extensions. The characters of 46 taxa with a resolved position in the latest phylogeny of Hoya were mapped and ancestral reconstruction analysis was carried out, indicating that the presence of a pellucid margin in the pollinium, corpusculum length less than half of the pollinium, and rhomboid-shaped corpusculum with lower extensions represent the ancestral state of the genus. Clade II is characterized by the absence of a pellucid margin and twisted caudicles. Loss of the pellucid margin occurring in Clade II and sometimes in other clades is considered independent reversals to the plesiomorphic state. The presence of a pellucid margin and rhomboid corpusculum, and absence of caudicle wings characterizes Clade IV. Ancestral reconstruction analysis revealed that pollinarium type V was the ancestral state of the core lineage Clade V. The species in this clade share presence of both a pellucid margin and caudicle wing, straight caudicle, and pollinium width of 201\textendash300 µm. Clade VI (the largest lineage) as well as Clades I and III have diverse palynological characters, but pollinarium type X and type V is probably the ancestral state of Clades VI and I, respectively.},

keywords = {Hoya},

pubstate = {published},

tppubtype = {article}

}

@article{10.3372/wi.50.50112,

title = {Phylogenetic studies in the Hoya group (Apocynaceae, Marsdenieae): the position of Anatropanthus and Oreosparte},

author = {Michele Rodda and Nadhanielle Simonsson and Enrico Ercole and Gillian Khew and Matti Niissalo and Sri Rahayu and Tatyana Livshultz},

url = {https://doi.org/10.3372/wi.50.50112},

doi = {10.3372/wi.50.50112},

year  = {2020},

date = {2020-01-01},

journal = {Willdenowia},

volume = {50},

number = {1},

pages = {119 -- 138},

publisher = {Botanic Garden and Botanical Museum Berlin (BGBM)},

abstract = {Recent molecular phylogenetic studies have shown that Hoya is paraphyletic without Absolmsia, Clemensiella, Madangia, and Micholitzia. These genera have been placed in synonymy with Hoya, but the monophyly of Hoya sensu lato relative to other genera of the broader Hoya group (Dischidia, Anatropanthus and Oreosparte, the latter two never included in a molecular phylogenetic analysis) remained unclear. Furthermore, no analysis has included both a significant sample of the Hoya group and outgroup genera of Marsdenieae to test the monophyly of the Hoya group and its position within the tribe. To address these gaps, we assembled two data sets: (1) the chloroplast trnT-trnL-trnF locus from 110 species and (2) three chloroplast loci (trnT-trnL-trnF, atpB-psbA spacer and matK) and two nuclear loci (nrDNA ITS and ETS) from 54 species. The Hoya group is monophyletic and nested in an Asian/Australian clade of Marsdenia s.l. The genus Hoya is paraphyletic unless Anatropanthus, Dischidia and Oreosparte are included. However, current evidence is not sufficient to synonymize Dischidia and Oreosparte with Hoya. Support for synonymy of Anatropanthus with Hoya is strong and the new name H. insularis is proposed. A clade of three new species with Oreosparte-like morphology is sister to the rest of the Hoya group and is described as the new genus Papuahoya.Citation: Rodda M., Simonsson N., Ercole E., Khew G., Niissalo M., Rahayu S. \& Livshultz T. 2020: Phylogenetic studies in the Hoya group (Apocynaceae, Marsdenieae): the position of Anatropanthus and Oreosparte. \textendash Willdenowia 50: 119\textendash138. doi: https://doi.org/10.3372/wi.50.50112Version of record first published online on 27 March 2020 ahead of inclusion in April 2020 issue.},

keywords = {Anatropanthus, Apocynaceae, Dischidia, epiphyte, Hoya, Marsdenia, Marsdenieae, molecular phylogeny, new genus, new species, Oreosparte, Papuahoya, systematics},

pubstate = {published},

tppubtype = {article}

}

@article{Rahayu_Rodda_2019,

title = {Hoya of Sumatra, an updated checklist, three new species, and a new subspecies},

author = {Sri Rahayu and Michele Rodda},

url = {https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/661},

doi = {10.5852/ejt.2019.508},

year  = {2019},

date = {2019-03-01},

urldate = {2019-03-01},

journal = {European Journal of Taxonomy},

number = {508},

keywords = {Hoya},

pubstate = {published},

tppubtype = {article}

}