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Ruth Kiew, Ruth
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CODONOBOEA (GESNERIACEAE) SECTIONS IN PENINSULAR MALAYSIA Lim, Chung Lu; Kiew, Ruth
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.137 KB) | DOI: 10.14203/reinwardtia.v14i1.388

Abstract

Codonoboea is the largest genus of Gesneriaceae in Peninsular Malaysia with 92 species. Nine sections, Boeopsis, Codonoboea, Didymanthus, Glossadenia, Heteroboea, Pectinati, Reptantes, Salicini and Venusti, have been erected based on morphological characters, such as habit, leaf arrangement and shape, type of inflorescence, number of flowers, corolla type and nectary type. Recent molecular phylogenetic study using ITS and trnL-F sequences show that only section Heteroboea is monophyletic. While the sections of Codonoboea can no longer be maintained as formal taxonomic taxa, as informal groupings they are useful in identification and in constructing keys.
DIVERSITY OF BEGONIA (BEGONIACEAE) IN BORNEO – HOW MANY SPECIES ARE THERE? Sang, Julia; Kiew, Ruth
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (663.912 KB) | DOI: 10.14203/reinwardtia.v14i1.420

Abstract

A total of 126 species are currently named and described from Borneo (Brunei - 16 species, Kalimantan – 5 species, Sabah – 41 species and Sarawak – 72 species). However, based on our survey of the begonia collection in the Sarawak Herbarium, the un-named taxa (about 110 species) significantly outnumber the 72-named species. The situation is probably the same for Sabah, so with many more new species than the 41 named ones at a conservative estimate the Sabah begonia flora can be expected to exceed 100 species. For Kalimantan (5 named species), the total number of un-named species is likely to be even higher considering that Kalimantan occupies a  larger land area, its begonia-rich mountains and limestone areas are hardly collected, and the begonia flora has hardly been studied at all. We can therefore expect the begonia flora of Borneo to exceed 600 species. In view of the high level of narrow endemism (80% of species are known from a single locality), expeditions to unexplored areas are necessary to document, in particular, areas that are experiencing irreversible land-use change. Alpha-taxonomy on a large scale is needed to tackle the backlog of literally hundreds of new undescribed species.
CHIONANTHUS (OLEACEAE) IN SULAWESI, INDONESIA, INCLUDING THREE NEW SPECIES KIEW, RUTH
REINWARDTIA Vol 14, No 2 (2015): Vol.14 No.2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1342.928 KB) | DOI: 10.14203/reinwardtia.v14i2.1672

Abstract

KIEW, R. 2015. Chionanthus (Oleaceae) in Sulawesi, Indonesia, including three new species. Reinwardtia 14(2): 287 - 295. - The genus Chionanthus (Oleaceae) in Sulawesi is revised. Nine species are described of which C. kostermansii Kiew, C. sordidus Kiew and C. sulawesicus Kiew are new species. Four species are endemic, C. celebicus Koord., C. sordidus, C. stenurus (Merr.) Kiew and C. sulawesicus. The geographic range of C. cordulatus Koord. extends to Borneo and Mollucas, while C. kostermansii also occurs in Sumbawa and Flores, and the range of C. rupicolus (Lingelsh.) Kiew extends to Sumbawa, Mollucas, New Guinea and the Bismarck Archipelago. Chionanthus polygamus (Roxb.) Kiew and C. ramiflorus Roxb. are both widespread species, the former from Sumatra to New Guinea and the latter from continental Asia to the Solomon Islands. A key to identify the species is provided. Chionanthus gigantifolius Koord. remains incompletely known.
Co-Authors Chung Lu Lim, Chung Lu Julia Sang, Julia