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Year Vol.
(Issue) Pages Author(s) Title

2015 38(0) 3-7 Alan Galloway Three New Amorphophallus Species from Laos (Buy)
ABSTRACT: Three new species of the genus Amorphophallus from Laos are described based on material in the existing living collection of the author. The similarities and differences of these new species, compared to their closest relatives are discussed.

2015 38(0) 8-12 Alan Galloway Two New Typhonium Species from Laos and Thailand (Buy)
ABSTRACT: Two new species of the genus Typhonium from Laos and Thailand are described based on material in the existing living collection of the author. The similarities of these new species, compared to existing species, are discussed.

2015 38(0) 13-18 Eduardo G. Gonçalves, Silvio P. Dos Santos Two New Species of Dracontium (Araceae) from Northern Brazil (Buy)
ABSTRACT: The Neotropical genus Dracontium has been revised in 2004 and more than half of the known species have been described in the last eleven years. This article describes and illustrates two new Amazonian species: D. laetum E.G.Gonc¸. & S.P. Santos and D. narae E.G.Gonc¸. Both species are so far known from the type locality, but their putative rarity is probably an artifact caused by scanty collections.

2015 38(0) 19-28 Marc Gibernau Floral Biology, Pollination Ecology & Genetics of Dieffenbachia (Araceae)—A Review (Buy)
ABSTRACT: This article presents a review on the floral biology, the pollination ecology and the population genetics in the genus Dieffenbachia (Araceae). Few studies had specifically studied Dieffenbachia species; in fact, data are available for only 5 species and not always in a complete way. In addition, some horticultural experiments on breeding and hormone treatments provide interesting complementary information. Even if the number of documented species is low; Dieffenbachia appears to be a genus presenting classic traits of cyclocephaline pollinated taxa. But more surprising these few data underline some variations of the pollination ecology or reproductive system within the genus suggesting a “dynamic” genus in terms of evolutionary changes. Further works on the biology and ecology of the species of this genus are needed and they should be done in the context of the tribe Spathicarpeae.

2015 38(0) 29-32 LariAnn Garner Alocasia wentii—Species or Enigma? (Buy)
ABSTRACT: The 19th century was a very fertile time for the development of horticultural plant varieties, and plants in the aroid family (Araceae) were not neglected in this regard. One of the most well-known plants developed in that period is Alocasia xamazonica, a cross of A. sanderiana and A. watsoniana (the name is a synonym for A. longiloba and this plant now considered a cultivar of A. longiloba, A. longiloba ‘Watsoniana’). While in modern times, hybridization has become de rigueur in the development of new varieties, in the 19th century, it was considered radical due to religious beliefs. One of the outcomes of this was the release of some new plants, produced via hybridization, using the same type of nomenclature as is used to name actual species in order to obscure the hybrid nature of these novel developments. With the foregoing information in mind, here I present a case for the hybrid nature of a plant considered currently to be a species —Alocasia wentii.

2015 38(0) 33-39 LariAnn Garner New Philodendron Hybrids Featuring P. saxicola (Buy)
ABSTRACT: In my quest to develop new, compact and ornamentally desirable Philodendron hybrids, I was anxious to own and bloom a specimen of P. saxicola. This plant is an attractive, smaller growing Philodendron in the meconostigma group, but is also difficult to grow and tends to grow rather slowly when compared to such wellknown (and grown) plants as Philodendron bipinnatifidum. A few years ago, I was able to germinate and grow my own specimen of P. saxicola (Fig. 1), and in 2013 the plant came into bloom for the first time. My objective was to see if I could develop hybrids that retained the compact and attractive characteristics of P. saxicola while adding ease of cultivation and disease resistance to the genetic mix.

2015 38(0) 40-179 Peter C. Boyce, Sin Yeng Wong Compendium Genera Aracearum Malesianum (Buy Back Issue)
ABSTRACT: A summary of the aroids of the Flora Malesiana region at the rank of genus is provided. Identification notes for each genus and, where appropriate, their major subdivisions are given. The last monograph and all subsequent key literature is cited for each genus, and also compiled as a general entry. All 42 of currently recognized indigenous Malesian aroid genera (excluding three genera of former Lemnaceae) are detailed, and illustrated.

2015 38E(1) 44-54 Thomas B. Croat A Review of Studies of Neotropical Araceae (Read)
ABSTRACT: The last decade has seen many changes in research with neotropical Araceae. There have been a lot of revisionary efforts especially with smaller genera but relatively few changes in the largest and most complex genera. Several key floristic studies have been completed and several more are underway. Increasingly phylogenetic studies are being carried out among genera of all sizes. This review will provide a history of past monographic and floristic efforts and will summarize by suggesting the areas most in need of further work.

2015 38E(1) 55-64 Greg Ruckert IAS and the Conservation of Aroids (Read)
ABSTRACT: the pre-eminent organisation for people interested in aroids. Its membership comprises professionals with a focus on the study of aroids as well as amateurs who are passionate about them. This presentation sets out why the IAS is so important and suggests possible ways it might take a stronger role in the conservation of Aroids.

2015 38E(1) 65-74 Duong Minh Truyen, Mashhor Mansor The distribution of Araceae along the lower section of Perak River, Malaysia (Read)
ABSTRACT: Araceae is one of the biggest families of monocotyledonous plants, and is diverse in both Old World and New World tropics and some are found in north temperate regions. The diversity of their species composition in the tropical Asian region is relatively rich and widely distributed in countries of South East Asia. In researching Araceae, the investigation and conservation of species are addressed accordingly. The survey of the distribution of Araceae along the lower section of Perak River, Malaysia was conducted from April to May, 2013 on several sites in each of four areas, namely Kuala Kangsar, Parit, Teluk Itan and Bagan Datuk which were selected based on the reviews about the main groups of Perak River’s landscape. During the field assessments, 17 aroid species in 13 genera were detected in this region. From the data collected, Colocasia and Alocasia are most frequent in areas surveyed and Colocasia is the most common genus. From Teluk Itan, Colocasia esculenta is the most common species because it grows in lowlands, extending from sea level. Colocasia gigantea is also recorded but not abundant. Besides the dominant species found, other species are occasionally found in rice fields and canals in the region surveyed. Most of Araceae species obtain nutrient substances from the area close to the river. Other surveys about the social values of Araceae usages are also conducted to supplement this work about Araceae in the Perak River.

2015 38E(1) 75-83 Peter C. Boyce Why is 'Flora Malesiana' Araceae not currently a practicable undertaking - Fenestratarum as an example (Read)
ABSTRACT: Flora Malesiana is a systematic account of the flora of Malesia, the plant-geographical unit spanning seven countries in Southeast Asia: Indonesia, Malaysia, Singapore, Brunei Darussalam, the Philippines, Timor Leste, and Papua New Guinea. The Araceae is one of the larger plant families of Malesia, currently comprising 42 described genera and, conservatively, about 1200 species. A substantial proportion of Malesian aroid species are either only recently named, or have yet to be formally described. Despite encouraging progress with regional monographic accounts in the1990s and early 2000s, notably for Alocasia, Schismatoglottis, Pothos, Epipremnum, and Rhaphidophora, the intervening years, marked by a significant increase in field-based research, have revealed an extraordinary wealth of novel diversity such that none of the terrestrial and rheophytic genera can be currently be considered adequately known. Highlighting increases in described species in the past 15 years, and drawing on the example of the recently described genus Fenestratarum, reasons why Flora Malesiana Araceae is not currently practicable are enumerated, and practicable alternatives proffered.

2015 38E(1) 84-87 A. Haigh Araceae and eMonocot: An online resource for monocot plants of the world (Read)
ABSTRACT: eMonocot (http://e-monocot.org) is an online resource for monocot plants created by the eMonocot project, a consortium of the Royal Botanic Gardens, Kew, Oxford University and the Natural History Museum, London, as well as contributions from monocot taxonomists and communities worldwide. Method and progress are described, including the addition and gathering of information on Araceae.

2015 38E(1) 88-93 Thomas B. Croat, Genevieve Ferry A Preliminary Analysis of Anthurium (Araceae) from Carchi Province, Ecuador (Read)
ABSTRACT: A preliminary survey of Anthurium (Araceae) Carchi Province, Ecuador is provided with a total of 146 named species, including seven taxa and 72 as yet unnamed species. More than 60% of all species are deemed to be new to science. The region is particularly rich in section Cardiolonchium (with 34 species and 2 taxa) and section Calomystrium with 29 species. Both are most abundant at middle to lower elevations. Section Belolonchium with 26 species is especially abundant at higher elevations. Even larger and found at middle to lower elevations is section Polyneurium (38 species), followed by section Porphyrochitonium (20 species) and section Xialophyllium (17 species), section Tetraspermium (6 species totaling 8 taxa); section Digitinervium (with 7 species), section Multinervium (with 12 species) and section Decurrentia (8 species).

2015 38E(1) 94-106 Masako Yafuso, Tuan Viet Bui, Shinichi Adaniya Pollination mutualism between flower-breeding flies of the genus Colocasiomyia (Diptera, Drosophilidae) and their host plant routes of Araceae in Vietnam. (Read)
ABSTRACT: Mutualistic co-evolution between host plant species of the family Araceae and species-specific pollinator flies of the genus Colocasiomyia (Diptera, Drosophilidae) was observed in wet, tropical to subtropical Southeast Asia. Complicated host-plant routes suggest the adaptive radiations in both Colocasiomyia species and Araceae species. Germination rates of pollen attaching to the pollinator flies were about 70%, while germination rate of collected pollen was often lower, which suggests that the Colocasiomyia flies contribute to the male reproductive success of their host plants.

2015 38E(1) 107-115 Alejandro Zuluaga, Kenneth Cameron, Thomas B. Croat, Melanie Medecilo Testing the monophyly of Spathiphyllum, and the relationship between Asian and tropical American species. (Read)
ABSTRACT: Mutualistic co-evolution between host plant species of the family Araceae and species-specific pollinator flies of the genus Colocasiomyia (Diptera, Drosophilidae) was observed in wet, tropical to subtropical Southeast Asia. Complicated host-plant routes suggest the adaptive radiations in both Colocasiomyia species and Araceae species. Germination rates of pollen attaching to the pollinator flies were about 70%, while germination rate of collected pollen was often lower, which suggests that the Colocasiomyia flies contribute to the male reproductive success of their host plants.

2015 38E(1) 116-129 Yujing Liu, Heng Li, Devra Jarvis, Chunlin Long Aroid crops in China (Read)
ABSTRACT: The history of aroid cultivation in China was briefly introduced in the present paper. Based on the approaches of literature study and field investigation, 16 species in the family Araceae were recognized as crops cultivated in the country. Among them, three species are with very high values both in Chinese history and nowadays. They are taro (Colocasia esculenta, a common food crop), konjac (Amorphophallus konjac, a medicinal and industrial crop), and Ban Xia (Pinellia ternata, an important herbal medicinal crop). The taxonomic issues at species and cultivar levels were argued and discussed. Suggestions for future studies were proposed for aroid crop development.

2015 38E(1) 130-142 Van Du Nguyen, Hong Quang Bui, Van Tien Tran, T. Masuno, Peter Matthews Useful aroids and their prospects in Vietnam (Read)
ABSTRACT: Although aroids are best known as food plants, a large majority of the wild and cultivated species in Vietnam have medicinal uses. Detailed studies of optimal growth conditions and effectiveness for medicinal use are needed for all of these plants. Ethnobotanical and practical studies also needed for sustainable management of wild aroid populations. This paper highlights the general scarcity of information on medically useful aroids.

2015 38E(1) 143-152 Van Kien Nguyen, Thi Hanh Duong, Peter Matthews, Van Du Nguyen Aroids germplasm conserved at Plant Resources Center: Past-Present and Future (Read)
ABSTRACT: Economic aroids are likely to have an increasingly important role in food security and agro-biodiversity. Vietnam is located within the Southeast Asian region that appears to be a cradle of origin for aroid crop species. Aroids have had long cultural and economic history among the diverse ethnic communities within Vietnam. There is not only a wealth of biological diversity among the economic aroids of Vietnam, but also a wealth of local knowledge concerning the planting, care, harvest, storage and use of aroids. The Plant Resources Center (former Plant Genetic Resources Center) is a focal point of the National Plant Genetic Resources conservation network in Vietnam and has conducted field surveys, collecting missions, and conservation efforts for economic aroids and related knowledge in Vietnam. We will introduce the previous history, study, and utilisation of aroid collections at the Plant Resources Center. The Center currently maintains 600 accession of Colocasia, 100 accessions of Xanthosoma, 16 accessions of Amorphophallus, 12 accessions of Alocasia and more than 32 unidentified accessions. We will also discuss aroid conservation strategies for Vietnam in the future.

2015 38E(1) 153-176 Peter Matthews, Van Du Nguyen, Daniel Tandang, E. maribel Agoo, Domingo A. Madulid Taxonomy and ethnobotany of Colocasia esculenta and C. formosana (Araceae): implications for the evolution, natural range, and domestication of taro (Read)
ABSTRACT: A critical problem for the taxonomy of taro (C. esculenta), and for understanding the evolution and domestication of this species, is that there is no way to recognise, by simple visual inspection, a wild population of taro as part of a natural distribution. This is because people throughout Southeast Asia have long used wild taro as a vegetable for human and animal consumption (as food and fodder). The example of C. formosana Hayata is introduced here because our observations so far indicate that this is a naturallydistributed wild species throughout its known range, despite its close phenotypic similarity to C. esculenta. To learn about the evolution, natural range, and domestication of taro, closer study of C. formosana is recommended.

2015 38E(1) 177-185 Viet Xuan Nguyen, Thi Thanh Mai Dang, The Anh Ngo Genetic diversity and phylogenetic relationships among Colocasia species (Araceae) in Vietnam using SSR markers (Read)
ABSTRACT: This study addresses the phylogenetic relationship between Colocasia species by microsatellite markers (SSRs). The plant materials of this study consisted of a total of 36 accessions belonging to C. esculenta, C. gigantea, C. lihengiae, C. menglaensis and two accessions of Alocasia odora (Roxb.) C. Koch. Seven SSR primer combinations produced a total of 97 alleles. The number of alleles per marker ranged from 6 to 18 alleles, with an average of 10.57 alleles per marker. The highest value of PIC found for SSRs was 0.93 and the lowest was 0.64, with a mean value of 0.77. A total of 68 polymorphic alleles with an average of 9.7 alleles per marker, and the highest value of PIC range from 0.8 to 0.6, with a mean value of 0.70 observed in the accessions of C. esculenta. Unweighted pair group method based on arithmetic average (UPGMA) analysis was performed on jaccard’s similarity coefficient matrix. According to the results, two main clusters were developed and C. esculenta, and C. gigantea located in the first main cluster (A). Three wild taro species localized in second main cluster (B). According to this study, the closest species to C. esculenta was C. gigantea. UPGMA analysis separated C. lihengiae and C. menglaensis from C. esculenta. This study revealed that C. lihengiae is similar to C. menglaensis, distinct from C. gigantea; and showed a closer genetic similarity to Alocasia odora than the C. esculenta.

2015 38E(1) 186-193 Niels Jacobsen, J. D. Bastmeijer, Claus Christensen, Takashige Idei, Conny Asmussen Lange, Jihad Orabi The use of AFLP markers to elucidate relationships within Cryptocoryne (Araceae) (Read)
ABSTRACT: Four species complexes in Cryptocoryne were included in a study of genetic diversity: The C. beckettii complex (Sri Lanka), the C. crispatula complex (Mainland Asia), and selected accessions from the di- and polyploid cordate leaved species from Malesia, altogether comprising 400+ accessions. The Amplified Fragment Length Polymorphism (AFLP) method was discriminative not only within but also between species complexes. Within the cordate leaved Malesian species, it was also possible to discriminate between diploids, tetraploids and hexaploids forming very robust relationship groupings. The AFLP study also revealed that, geographical proximity exposed closer genetical relationship than morphologically similar accessions geographically apart.

2015 38E(2) 4-9 Peter C. Boyce, Sin Yeng Wong Studies on Schismatoglottideae (Araceae) of Borneo XXXXVI: Fenestratarum mulyadii–A second species for a recently described genus (Read)
ABSTRACT: A second species of the recently established genus Fenestratarum is described, from Kalimantan Timur, Indonesian Borneo, as Fenestratarum mulyadii. This new species represents an over 600 km eastwards extension to the known range of the genus. Fenestratarum mulyadii is figured in colour, and compared to Fenestratarum culum in an identification key.

2015 38E(2) 10-22 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXXVII – Aridarum ashtonii, a new species from the Hose Mountains, and notes on Aridarum burttii (Read)
ABSTRACT: Aridarum ashtonii is described as a new species from highland sandstones of the Hose Mountains, Kapit, Sarawak, Malaysian Borneo. Aridarum ashtonii has previously been confounded by the authors with Aridarum burttii, a species occurring on lowland riverine shales. Notes on Aridarum burttii are given and the purported origins of the Type specimen questioned. Aridarum ashtonii and A. burttii are illustrated from living plants, and a key to the five species of the Aridarum Burttii Complex is provided. Recognition of A. ashtonii takes Aridarum to 26 accepted, described species.

2015 38E(2) 23-30 Peter C. Boyce, Sin Yeng Wong Studies on Schismatoglottideae (Araceae) of Borneo XXXXVIII – Galantharum, a new genus for the Hottarum Clade (Read)
ABSTRACT: Galantharum is described as a new genus of Tribe Schismatoglottideae, with a single novel species, Galantharum kishii. Preliminary molecular analyses place Galantharum basal of a clade composed of Fenestratarum, Bakoa, Hottarum, two clades containing species currently assigned to Aridarum, and a clade of species presently included in Piptospatha.

2015 38E(2) 31-37 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXXIX – Schismatoglottis antu , a new species allied to Schismatoglottis gui (Read)
ABSTRACT: Ongoing fieldwork in the north western part of the “Heart of Borneo” has revealed a new species of Schismatoglottis allied to the recently described and enigmatic Schismatoglottis gui and S. camera-lucida. This novelty is here described and illustrated as Schismatoglottis antu S. Y. Wong & P. C. Boyce, sp. nov.

2015 38E(2) 38-66 Marc Gibernau Pollination ecology of two Dieffenbachia in French Guiana (Read)
ABSTRACT: The reproductive ecology of two species of Dieffenbachia (D. seguine [Jacq.] Schott and D. paludicola N.E. Br. ex Gleason) was studied at the Nouragues field station research in French Guiana. As in other known Dieffenbachia, the two studied species presented the classical cyclocephaline (dynastine scarab beetle) pollination system: Nocturnal anthesis with a strong odor, protogynous and short anthesis over 2 (3) days, female flowers being receptive on the first night and pollen being released on the second night. Inflorescences of D. seguine were visited by two species of scarab beetles (Cyclocephalini, Dynastinae): the dark brown Cyclocephala rustica and the black Erioscelis proba; while Inflorescences of D. paludicola were only visited by Erioscelis proba. Scarab beetles were efficient pollinators resulting in a high reproductive success even if some self-pollination can occur. Original data were gathered on flower and fruit predation leading to pollen and seed loss but their effect of the reproductive success still needs to be quantified.

2015 38E(2) 67-122 Thomas B. Croat, Mackenzie Hempe, Carla V. Kostelac Araceae of Parque Nacional Natural de Las Orquídeas, Colombia (Read)
ABSTRACT: A total of 16 new species of Anthurium are described as new to science: Anthurium abajoense Croat & A. Zuluaga, A. alcogolloi Croat, A. blanquitense Croat, A. curtipendunculum Croat, A. dabeibaense Croat, A. elquincense Croat, A. espiranzaense Croat & A. Zuluaga, A. frontinoense Croat & A. Zuluaga, A. hempeanum Croat, A. juanguillermoi Croat, A. ovidioi Croat, A. pedrazae Croat & A. Zuluaga, A. paloense Croat, A. sneidernii Croat, A. tortuosum Croat, and A. triangulopetiolum Croat.