Species radiations, despite immense phenotypic variation, can be difficult to resolve phylogenetically when genetic change poorly matches the rapidity of diversification. Genomic potential furnished by palaeopolyploidy, and relative roles for adaptation, random drift and hybridisation in the apportionment of genetic variation, remain poorly understood factors. Here, we study these aspects in a model radiation, Syzygium, the most species-rich tree genus worldwide. Genomes of 182 distinct species and 58 unidentified taxa are compared against a chromosome-level reference genome of the sea apple, Syzygium grande. We show that while Syzygium shares an ancient genome doubling event with other Myrtales, little evidence exists for recent polyploidy events. Phylogenomics confirms that Syzygium originated in Australia-New Guinea and diversified in multiple migrations, eastward to the Pacific and westward to India and Africa, in bursts of speciation visible as poorly resolved branches on phylogenies. Furthermore, some sublineages demonstrate genomic clines that recapitulate cladogenetic events, suggesting that stepwise geographic speciation, a neutral process, has been important in Syzygium diversification.

Herbarium collections shape our understanding of the world’s flora and are crucial for addressing global change and biodiversity conservation. The formation of such natural history collections, however, are not free from sociopolitical issues of immediate relevance. Despite increasing efforts addressing issues of representation and colonialism in natural history collections, herbaria have received comparatively less attention. While it has been noted that the majority of plant specimens are housed in the global North, the extent of this disparity has not been rigorously quantified to date. Here, by analyzing over 85 million specimen records and surveying herbaria across the globe, we assess the colonial legacy of botanical collections and how we may move towards a more inclusive future. We demonstrate that colonial exploitation has contributed to an inverse relationship between where plant biodiversity exists in nature and where it is housed in herbaria. Such disparities persist in herbaria across physical and digital realms despite overt colonialism having ended over half a century ago, suggesting ongoing digitization and decolonization efforts have yet to alleviate colonial-era discrepancies. We emphasize the need for acknowledging the inconvenient history of herbarium collections and the implementation of a more equitable, global paradigm for their collection, curation, and use.

Holme et al., 2015). At higher elevations increased temperature may increase diversity but with limits imposed by available area as mountains taper (Dullinger et al., 2012;Elsen & Tingley, 2015). In addition,

No abstract

RUSTIAMI, H. & HENDERSON, A. 2017. A synopsis of Calamus (Arecaceae) in Sulawesi. Reinwardtia 16 (2): 49-63. - A synopsis of the rattan genus Calamus in the Indonesian island of Sulawesi is given. Twenty-three species are recognized, including two new species that are described and illustrated: Calamus posoanus and C. sandsii. Nomencla-ture, including designation of 17 lectotypes, is given for each species, as well as notes on distribution, habitat, vernacu-lar names, specimens examined, uses, and systematics.

North Wakarumba is one of subdistrict lies in the north of Buton Island, close to North Buton Nature Reserve. More than one etnic live in this sub district such as Muna as the biggest ethnic. Muna people have unique behavior in the plant using and environment management including protecting forest and its surrounding area. Study on the plant usage as traditional medicinal plant has been done by interviewing local people. The result of the research was got 61 species of medicinal plants, where 6 species of them have never been published at the Index of Indonesian Medicinal Plants. Thirty-eight plants species could be found wildly and 16 of them occur in North Buton Nature Reserve areas. Bark of 10 species reported as after giving birth medicine. Grinding of Epipremnum pinnatum leaves could be used as wound medicine. Leaf of Terminalia catappa could be used as anti diarrhea.© 2006 Jurusan Biologi FMIPA UNS SurakartaKey words: North Wakarumba, Muna ethnics, medicinal plant, Buton

Societal Impact StatementWe found evidence that larger fruited plant species are more likely to be found in aseasonal wet areas of Malesia. These areas are likely to be impacted by increasing human encroachment, which threatens both large‐fruited species and the large fauna that are most likely responsible for their dispersal. This synergistic threat could drive the loss of fruit‐crop relatives that potentially have key traits for resilient fruit crops of the future.Summary It is unclear how fruit size determines distributions of megadiverse tropical flora. Energetic constraints of ecosystems suggest plant species with larger fruit should be found in the higher productivity, aseasonal wet tropics. However, the probability of seed dispersal over large scales should be increased by fruits being smaller, due to being available to a greater number of dispersal agents. We use a Bayesian phylogenetic model of species occurrence for >3400 species in Malesia to test how fruit size and environment interact to determine species distributions across the archipelago. We show that larger fruited species are more likely to occur in aseasonal wet areas. We also found that smaller fruit size was associated with species occurrence in more mountainous areas. Fruit size interacts with environmental variables to shape plant distributions across the megadiverse Malesian islands. The evolutionary processes that influence the patterns we have observed require further examination.

The name of Gigantochloa taluh Widjaja & Astuti (Poaceae, Bambusoideae) was invalid because of failure to meet the requirements of the International Code of Nomenclature for algae, fungi, and plants, that there was no herbarium location of type specimens was mentioned. A typification was provided here to address this issue.