Showing papers in "Blumea in 2003"
TL;DR: A revised subgeneric subdivision of Ficus is proposed and some important characters on which this subdivision is based are discussed, a key to the subgenera is presented.
Abstract: A revised subgeneric subdivision of Ficus is proposed. Some important characters on which this subdivision is based are discussed, a key to the subgenera is presented. Distribution and relationships of the subgenera are briefly discussed.
82 citations
TL;DR: A taxonomic revision of the Austro-Malesian species of Miliusa Lesch.
Abstract: A taxonomic revision of the Austro-Malesian species of Miliusa Lesch. ex A.DC. (Annonaceae) is presented. Ten species can be recognised in the area, including one new species, Miliusa novoguineensis, described here. Most species are restricted to certain islands or geographic areas. Miliusa horsfieldii (Benn.) Pierre is the main exception as it is distributed from Hainan up to Queensland, Australia. Six of the ten species (except M. amplexicaulis Ridl., M. longipes King, M. macropoda Miq. and M. parviflora Ridl.) have a deciduous habit, and are largely restricted to areas with a monsoon climate. A key, based primarily on generative characters, and descriptions to the species are included.
36 citations
TL;DR: The sections of Ficus L. subg.
Abstract: The sections of Ficus L. subg. Ficus are described and their Malesian species listed and a key to their identification is provided. One new subsection is established: Ficus subg. Ficus sect. Eriosycea subsect. Auratae. Four new species and two new subspecies are described: F. auricoma, F. glabristipulata, F. kofmanae, F. subglabritepala, F. oleifolia subsp. monantha, and F. hirta subsp. ochracea. Some new combinations and changes of rank are made: F. deltoidea subsp. motleyana, F. oleifolia subsp. intermedia, F. hirta subsp. dumosa and subsp. roxburghii, and F. tricolor var. robusta.
32 citations
TL;DR: Generic descriptions of all genera of Philippine Rubiaceae are coded in DELTA format (Version 2000) and translated by the directive CONFOR into INTKEY database for interactive identification and information retrieval.
Abstract: Changes in generic concepts and delimitation resulted in 80 genera (6 of which are cultivated) of Philippine Rubiaceae. Generic descriptions of all genera are coded in DELTA format (Version 2000) and translated by the directive CONFOR into INTKEY database for interactive identification and information retrieval. The descriptions incorporate mostly compiled data of Philippine Rubiaceae species and observations on over 130 characters. Recently accepted classification (subfamily, tribes, and subtribes) and significant characters defined by Robbrecht (1988, 1993) are appended to the generic descriptions. The database is available on the World Wide Web at http://www.uni-bayreuth.de/ departments/planta2/wgl/delta_ru/index.html.
26 citations
TL;DR: The species is restricted to ultrama sites and easily identified by its unusual leaf venation and its jade-green sap, and is the second most visibly nickel-accumulating plant known to date.
Abstract: Phyllanthus balgooyi Petra Hoffm. & A.J.M. Baker (Euphorbiaceae s.l. or Phyllanthaceae) is described from Palawan (Philippines) and Sabah (Malaysian Borneo) as a species of Phyllanthus sect. Emblicastrum. The species is restricted to ultramafic sites and easily identified by its unusual leaf venation and its jade-green sap. It is the second most visibly nickel-accumulating plant known to date.
21 citations
TL;DR: A taxonomic revision is made of the Neotropical genus Pseudoxandra, meant as a precursor for a future Flora Neotropica treatment of the integral Cremastosperma alliance.
Abstract: A taxonomic revision is made of the Neotropical genus Pseudoxandra. This genus forms part of the Cremastosperma alliance which consists of Bocageopsis, Cremastosperma, Ephedranthus, Klarobelia, Malmea, Mosannona, Onychopetalum, Oxandra, Pseudephedranthus, Pseudomalmea, Pseudoxandra, Ruizodendron, and Unonopsis, all from the Neotropics. Within Pseudoxandra 22 species are recognized, four of which were described quite recently by the first author (Maas et al., 1986). Fourteen species are described here as new. Two dichotomous keys are provided, one for the genera of the Cremastosperma alliance, and the other for the species of Pseudoxandra. The species treatments include descriptions, geographical and ecological notes, distribution maps, synonymy, taxonomic notes, and vernacular names. A complete index of exsiccatae is included. Parallel to the taxonomic revision, a leaf anatomical survey was made by E.-J. van Marle. One of the intriguing features in Pseudoxandra is the frequent presence of minuscule warts on the leaves in dried specimens, while fresh material does not show any such warts. Osteosclereids found in the mesophyll of most species are probably responsible for this feature. This revision is meant as a precursor for a future Flora Neotropica treatment of the integral Cremastosperma alliance. Revisions of Klarobelia, Malmea s.s., Mosannona and Pseudomalmea, once constituting the genus Malmea s.l., were published earlier by Chatrou (1998). Treatments of other genera are under way, or planned for the near future.
21 citations
TL;DR: A phylogeny based on morphological and palynological data proved futile, but showed that Sauropus together with Breynia and Glochidion are embedded in the paraphyletic Phyllanthus.
Abstract: Fourteen species of Sauropus are recognised for Malesia, 21 for Thailand. Two species are described as new, S. asymmetricus of Sumatra and S. shawii of Borneo. Many new synonyms, especially for S. androgynus and S. rhamnoides, are provided. The latter two species have a much wider distribution than described before and both are difficult to separate from each other. A phylogeny based on morphological and palynological data proved futile, but showed that Sauropus together with Breynia and Glochidion are embedded in the paraphyletic Phyllanthus. Most species which formerly belonged to Synostemon and are now included in Sauropus are probably, with the exception of S. bacciformis, related to Breynia and Glochidion. Because of the poor phylogenetic results the circumscription of Sauropus is not changed (Synostemon still included), and an infrageneric classification is not provided.
20 citations
TL;DR: The position of Ficus subg.
Abstract: The position of Ficus subg. Pharmacosycea sect. Oreosycea and its subdivision are briefly discussed. A new subsection Glandulosae C.C. Berg is established. Five new species are described for the Malesian region: F. carinata, F. matanoensis, F. saruensis, F. sclerosycia, and F. subcaudata. Ficus pubinervis Blume and F. minor King are reduced to subspecies of F. nervosa Roth.
17 citations
TL;DR: P Piper subbullatum is the most widespread of the six Piper species of New Guinea and is also found in the Philippines and from the Bismarck Archipelago to Vanuatu, and has been confused with P. subbullatum but is a completely glabrous plant.
Abstract: Sixteen climbing Piper species are accepted for New Guinea. The three endemics, P. arfakianum, P. subcanirameum and P. versteegii, are fully described. Eight taxa of unclear circumscription are noted. A new variety of P. macropiper, endemic to Morobe Province of Papua New Guinea, is described. The presence of an ant-plant piper in West New Guinea is noted.
17 citations
TL;DR: One new species is described and several new combinations are established with the inclusion of pentamerous genera into Phyllagathis with a wider generic concept than used by earlier authors.
Abstract: A revision of the genus Phyllagathis Blume is presented under a wider generic concept than used by earlier authors. This section of the revision will focus exclusively on the species in Borneo and Natuna Island. Eighteen species are endemic to Borneo, and only P. steenisii is endemic to Natuna Island, a small Indonesian island off the northern coast of Sarawak. One new species is described and several new combinations are established with the inclusion of pentamerous genera into Phyllagathis.
14 citations
TL;DR: It does not appear possible to distinguish the species of Syzygium on the basis of features of the pollen visible under SEM, though section Jambosa tends to have larger pollen with a proportionally larger apocolpium than species not in that section.
Abstract: Pollen of 57 species of Syzygium from SE Asia were surveyed by SEM. The grains are all ± triangular in polar view, uniformly small (mean diameter 10.4 μm) with few surface sculpturing features. All species examined exhibit a distinct apocolpium and, usually, apocolpial field. The presence of an apocolpial field cannot be linked to any known taxonomic grouping within the genus. It does not appear possible to distinguish the species of Syzygium on the basis of features of the pollen visible under SEM, though section Jambosa tends to have larger pollen with a proportionally larger apocolpium than species not in that section. Estimates for the number of pollen grains per stamen in species with larger pollen grains (± section Jambosa) are 5× as great as for other species in the genus. TEM preparations showed the pollen surface to bear small supratectal processes and to be covered with pollenkit. The foot layer is well developed and more or less of the same thickness as the tectum. The columellae are of variable width and the endexine c. 0.05 μm thick. Various features of flower size are found to be positively correlated to pollen size. As large pollen grains are linked to large staminal numbers and large stamens (long filaments and large anthers) it is suggested that investigation of the breeding biology of section Jambosa is required.
TL;DR: A new species of Afrothismia, A. gesnerioides H. Maas is described and illustrated and a key to the genus AfrothISMia is included.
Abstract: A new species of Afrothismia, A. gesnerioides H. Maas is described and illustrated. A key to the genus Afrothismia is included.
TL;DR: A taxonomic revision of all genera belonging to Gentianaceae–Canscorinae, i.e., Canscora, Cracosna, Duplipetala, Hoppea, Microrphium, Phyllocyclus and Schinziella is presented, including keys to the taxa, distribution maps and seed coat descriptions.
Abstract: A taxonomic revision of all genera belonging to Gentianaceae–Canscorinae, i.e., Canscora, Cracosna, Duplipetala, Hoppea, Microrphium, Phyllocyclus and Schinziella is presented, including keys to the taxa, distribution maps and seed coat descriptions. One new genus, one new species and seven new combinations are described. In total seven genera and 23 species are recognized. All taxa are of palaeotropical distribution with centres in India and SE Asia.
TL;DR: The following new species of Syzygium are described from Queensland, Australia: S. fratris, S. glenum, S., monimioides and S. monospermum.
Abstract: The following new species of Syzygium are described from Queensland, Australia: S. fratris, S. glenum, S. monimioides and S. monospermum. Notes are provided as to their putative relationships.
TL;DR: During the process of compiling a checklist of Malesian Zingiberaceae, material referred to the synonymous genus Geanthus was examined carefully and it became evident that a new name, Amomum centrocephalum, and eight new combinations in Etlingera had to be made.
Abstract: During the process of compiling a checklist of Malesian Zingiberaceae, material referred to the synonymous genus Geanthus was examined carefully as the presently accepted genus Etlingera was likely to be involved. In this process it became evident that a new name, Amomum centrocephalum, and eight new combinations in Etlingera had to be made.
TL;DR: Inflorescences with 0(–6) bract scars below lowest partial inflorescence; partial inflorescences 1–3, 1flow ered; Only scars of bracts seen.
Abstract: Treelet 3–8 m high. Branchlets rather slender; dry epidermis blackish brown, longi tudinally wrinkled, cells laterally distinct, almost flat. Cataphylls (strongly reduced leaves), but usually their scars, between and below the leaves. Leaves scattered. Petioles 0.5–1.1 cm long, flat or proximally slightly canaliculate above, rounded to triangular below. Blade narrowly obovate, 1.8–5.6 by 0.6–1.7 cm, thinly coriaceous; apex broadly rounded, rarely obtuse; base attenuate; in sicco margins recurved; midrib flat above, slightly raised to prominent and rounded to triangular below; nerves at the middle of the blade at an angle of 55–65o(–80o) to the midrib, faint to prominulous above, faint to inconspicuous below. On lower leaf surface only stomata grey. Inflorescences with 0(–6) bract scars below lowest partial inflorescence; partial inflorescences 1–3, 1flow ered. Only scars of bracts seen. Pedicels flattened, often apically somewhat broadened, 35–55 mm long, smooth. Calyx ruptured irregularly into 2 or 3(–5) lobes, rather thick to rather thin, patent, 3–4 mm long. Corolla: 4 or 5 outer petals for 0.5–0.8 of their length connate into a continuous ring which upon anthesis ruptures along slightly thinner areas demarcating the petals into ovate lobes 10–15 by 4–9 mm; inner petals 8–11, free, elliptic to obovate, towards stamens decreasing in size, innermost ones 5.5 by 3 mm. All petals especially on adaxial side micropapillate by highconvex cells; brachysclereids not seen. Stamens 59–81, 3–5 mm long, distal stamens longer than proximal ones; filaments obovoid to rod-shaped, (partly) micropapillate by high-convex cells; thecae apical, at the median touching but distinctly demarcated, at 40–120o to each other. Pollen in tetrads; exine reticulate. Carpels 10–14, free, 3–3.5 by 2.5–3.5 by 1.5–2 mm; apex long, straight to convex; stigma rather broad, abaxially as long as to slightly longer than carpel apex, adaxially after a sharp angle descending over
TL;DR: Neoalsomitra contains 11 species, one of which, N. clavigera, is widespread, covering the whole range of the genus from NE India and S China into Australia and the Pacific.
Abstract: Neoalsomitra contains 11 species, one of which, N. clavigera, is widespread, covering the whole range of the genus from NE India and S China into Australia and the Pacific. The genus is heterogeneous in having species with free stamens and species with the filaments connate; however, this cannot be used for subdivision. Neoalsomitra hederifolia and N. schefferiana are podagric succulents, i.e. with thickened stem-bases. Neoalsomitra pilosa W.J. de Wilde & Duyfjes (New Guinea) is newly described; new combinations are N. hederifolia (Decne.) W.J. de Wilde & Duyfjes and N. schefferiana subsp. podagrica (Steenis) W.J. de Wilde & Duyfjes.
TL;DR: The Flora Malesiana region is revised and a key to the species of Derris in Malesia is presented and notes on aberrant specimens and excluded species are presented.
Abstract: Derris Lour. is revised for the Flora Malesiana region. In the introduction comments are given on some characters and the seedlings of D. trifoliata Lour. are described. The introduction is followed by a section ‘Notes on species’ in which the varieties of D. elegans Graham ex Benth. are described, including a new one from Celebes (var. celebica Adema) and a new one from Malaysia, Java, Borneo, the Philippines and the Moluccas (var. korthalsiana (Blume ex Miq.) Adema). Several other species are discussed at some length. A key to the species of Derris in Malesia is presented. The paper concludes with notes on aberrant specimens and excluded species.
TL;DR: The genus Paraderris (Miq.) Geesink is discussed, mainly for the Malesian area, and two new species P. luzoniense and P. ornithocephalus are described.
Abstract: The genus Paraderris (Miq.) Geesink is discussed, mainly for the Malesian area. Two new species P. luzoniense and P. ornithocephalus are described. A key to the Malesian species is given. All currently recognized species are enumerated. All obligatory new combinations have been made.
TL;DR: Tupistra sumatrensis N. Tanaka, a new species from northern Sumatra, is described and illustrated and diagnostic notes are provided.
Abstract: Tupistra sumatrensis N. Tanaka, a new species from northern Sumatra, is described and illustrated. Diagnostic notes of this species in comparison with some related species are also provided.
TL;DR: This study reveals some interesting results concerning to leaflet surface, such as some of the characters of the epidermis cells, stomata, presence of papillae and trichomes, which can provide additional characters useful in Abrus for species and infraspecific segregation.
Abstract: Despite the various taxonomic revisions of Abrus Adans., species and infraspecific delimitation are not always clear. In those revisions very little reference is made to micromorphological characters, in particular to those of the compound leaves, in spite of the stability of some of those characters. By using techniques of light and scanning microscopy this study reveals some interesting results concerning to leaflet surface, such as some of the characters of the epidermis cells, stomata, presence of papillae and trichomes. These characters show some range of variation at the species level but not at the subspecies level. We conclude that those structures can provide additional characters useful in Abrus for species and infraspecific segregation. This study also supports Breteler’s delimitation of the African Abrus species.
TL;DR: Alysicarpus Desv.
Abstract: Alysicarpus Desv. is revised for the Flora Malesiana area. The recently described species A. aurantiacus Pedley is recorded for several localities in Papua New Guinea. Alysicarpus monilifer L. is recorded for Luzon (Philippines). The variability of A. vaginalis is discussed. A key for the Malesian species is presented.
TL;DR: A new species of Nepenthes from the Bukit Barisan, West Sumatra, Indonesia, is described.
Abstract: Nepenthes izumiae Troy Davis, C. Clarke & Tamin (Nepenthaceae), a new species from the Bukit Barisan, West Sumatra, Indonesia, is described.
TL;DR: Syzygium gracile (korth.) Amshoff is superfluous: ‘glabratum’ should have been used, as there seems to be no SyzyGium glabrata then and now (IPNI, May 21, 2003).
Abstract: Ms. Amshoff (1945) coined the combination Syzygium gracile (korth.) Amshoff, based on Jambosa gracilis korth. (1847). she cited an apparently earlier place where the combination would have been made: the ‘Noodflora voor Java’ (1944). However, all new taxa and combinations found there must be regarded as invalid, as the Noodflora was prepared to safeguard Backer’s manuscripts in a number of places. Hence the publication in 1945 was necessary to validate some new names and taxa. However, Amshoff also cited Myrtus glabrata Blume (1826–1827: 1083, ‘1088’), which is a later homonym of M. glabrata sw. (1788). she was apparently not aware that Blume’s taxon was given a valid name, Jambosa glabrata, by de Candolle (1828), i.e. older than korthals’ name. Syzygium gracile (korth.) Amshoff is superfluous: ‘glabratum’ should have been used, as there seems to be no Syzygium glabratum then and now (IPNI, May 21, 2003).
TL;DR: A new monotypic genus from New Guinea that matches that of the Cucurbitoieae–Melothrieae, except for its small size is described.
Abstract: A new monotypic genus from New Guinea is described. Its pollen matches that of the Cucurbitoieae–Melothrieae, except for its small size.
TL;DR: In recent collections of herbaceous grasses from Thailand some novelties were detected: Eremo- chloa maxwellii Veldk.
Abstract: In recent collections of herbaceous grasses from Thailand some novelties were detected: Eremo- chloa maxwellii Veldk. and Parahyparrhenia laegaardii Veldk. New records for Thailand are: Eragrostis tenuifolia (Hochst.) Steud., Eulalia tetraseta Ohwi, Germainia thorelii A. Camus, Sporobolus tenuissimus (Schrank) Kuntze. A second collection after the type was made of Germainia pilosa Chai-Anan.
TL;DR: Two new species of Schizostachyum Nees: S. andamanicum and S. kalpongianum, are described and illustrated.
Abstract: Two new species of Schizostachyum Nees: S. andamanicum and S. kalpongianum, are described and illustrated.
TL;DR: A new species, Anoectochilus narasimhanii, allied to A. nicobaricus N.P. Balakr.
Abstract: A new species, Anoectochilus narasimhanii, allied to A. nicobaricus N.P. Balakr. & Chakr. from Saddle Peak National Park in North Andamans is described and illustrated. It is the first record of the genus from the Andamans. It grows on humus rich soil, in the shade of stunted evergreen vegetation at an elevation of ± 650 m.
TL;DR: The genus Baijiania, originally thought to be indigenous in China and Borneo, appears to be restricted to Bornea.
Abstract: The genus Baijiania, originally thought to be indigenous in China and Borneo, appears to be restricted to Borneo. The only species is Baijiania borneensis, with two varieties, the type variety and var. paludicola Duyfjes, var. nov.
TL;DR: The herbarium collections from western Africa for the ECOSYN Project came across several not yet published new species, among them was Uvaria sassandrensis described below, which is until now only known from Me d'Ivoire.
Abstract: When going through the herbarium collections from western Africa for the ECOSYN Project (see acknowledgement) we came across several not yet published new species. Among them was Uvaria sassandrensis described below. Specimens of this new Uvaria species found in the herbaria were sometimes identified as U. thomasii Sprague & Hutch., the only other species in the area with long dark bristly hairs on twig and petiole (Keay, 1954: 35). Both species also have a cordate leaf-base and calyx-lobes that are already distinct in bud. However, the fruit of the new species is smooth whereas the fruit of U. thomasii is spiny and the flowers of the two species are clearly different as well, the petals in U. thomasii are about 3 times as long as wide while the petals of the new species are almost circular. Uvaria thomasii is found in forests from Senegal to Me d'Ivoire, U. sassandrensis is until now only known from Me d'Ivoire.