Showing papers in "Blumea in 2002"

Revision of geranium sections azorelloida, neoandina, and paramensia (geraniaceae)

Abstract: The sections Azorelloida, Neoandina, and Paramensia of Geranium, all of them from the Andes, are taxonomically revised. Fruits with the ‘seed ejection-type’ dispersal have been found in all species, which allows classifying them within subg. Geranium. The sections Azorelloida and Paramensia consist of one and two species respectively, while section Neoandina comprises 24 taxa. Prior to this revision, the stemless species of Geranium from the Andes have been considered to belong to sect. Andina. Geranium sessiliflorum (type of Geranium sect. Andina), however, should be included in sect. Chilensia. Therefore, recently a new sect. Neoandina has been described to include most of the sect. Andina species (Aedo, 2000). Diagnostic morphological features are analysed and compared within and between the sections. The parsimony analysis suggested an early separation of sect. Paramensia from the rest of the ingroup constituted by the sections Azorelloida and Neoandina. These sections would later on have become separated into two groups: one with paramo species, and the other with more xerophilous, cold-resistant puna species. The biogeographic analyses using Fitch parsimony, dispersal-vicariance optimisation, and Bremer analysis support a paramo origin for the entire group in the North Andes, followed by a colonisation of southernmost regions (puna) and vicariance. A key, species descriptions, a complete list of synonymy, a list of specimens examined, and distribution maps are provided. Most species are illustrated for the first time. Fifteen lectotypes and one neotype are designated.

Seed morphology of some tribes of Brassicaceae (implications for taxonomy and species identification for the flora of Egypt)

Abstract: Seed morphology of 45 taxa belonging to 23 genera of Brassicaceae were examined using light and scanning electron microscopy. The taxa included representatives of the tribes Arabideae, Euclidieae, Hesperideae, Lunarieae, Matthioleae, and Sisymbrieae, which all occur in Egypt. Macro- and micromorphological characters, including seed shape, colour, size, the position of the radicle relative to the cotyledons, epidermal cell shape, anticlinal boundaries, outer periclinal cell wall and relief of outer cell walls, are presented. Three types of basic anticlinal cell wall boundaries are recognised and six different shapes of the outer periclinal cell wall are described. A key for the identification of the investigated taxa based on seed characters is provided.

Revision of Eragrostis (Gramineae, Chloridoideae) in Malesia

Abstract: In Malesia there are 25 taxa of Eragrostis (Gramineae, Chloridoideae, Eragrostideae), incl. Ectrosiopsis (Ohwi) Jansen. Eight, perhaps eleven species are introduced. Eragrostis balgooyi Veldk. is here described as new. Eragrostis amabilis (L.) Nees is the correct name for E. tenella (L.) Roem. & Schult. The combination E. elongata (Willd.) Jacq. has been applied to at least eight taxa ranging from Sri Lanka to Australia, and the younger synonym, E. diandra (R.Br.) Steud., is used here.

Revision on the genus Phyllagathis (Melastomataceae: Sonerileae). I. The species in Burma, Thailand, Peninsular Malaysia and Sumatra

Abstract: A revision of the genus Phyllagathis Blume is presented under a wider generic concept than used by earlier authors. A comprehensive synopsis of the genus is provided in the general part, where morphological characters and their variations are discussed. This paper will focus in particular on the species occurring in Burma, Thailand, Peninsular Malaysia (West Malaysia), and Sumatra. Here, the genus includes 10 species, most of which are endemic to Peninsular Malaysia, with only two species endemic to Thailand (P. siamensis and P. tuberosa), and two other also occurring outside the Malaysian political boundaries (P. rotundifolia and P. hispida). Part II of this paper will treat the species of Borneo and Natuna Island.

Revision of Alyxia (Apocynaceae). Part 2: Pacific Islands and Australia

Abstract: The genus Alyxia is revised for Australia and the islands of the Pacific Ocean as the second and final part of a complete revision of the genus. 39 species are recognised for this area of which three are new to science, two are new combinations and one is a new name. 14 species are found in Australia and its offshore territories, 21 species in New Caledonia and the Loyalty Islands, and seven species in the other islands of the Pacific. There is relatively little overlap between regions: two species are found in Malesia and Australia; one species is found in New Guinea and the Solomon Islands; one species in Vanuatu and New Caledonia; and A. stellata is found in Australia, New Caledonia and into the Pacific as far as Hawaii and Henderson Island. Keys and descriptions for the species are given. Alyxia stellata and A. tisserantii are particularly variable and in need of further study. The new species are A. evansii D.J. Middleton,. A. solomonensis D.J. Middleton and A. veillonii D.J. Middleton; the new name is A. mucronata D.J. Middleton; and the new combinations are A. poyaensis (Boiteau) D.J. Middleton and A. tropica (P.I. Forst.) D.J. Middleton.

Revision of Chionachninae (Gramineae: Andropogoneae)

Abstract: A revision is presented of the four genera of the SE Asian Chionachninae Clayton (Gramineae: Andropogoneae). Twelve species are recognised: nine (with two new combinations) in Chionachne R. Br. (incl. Sclerachne R. Br.) with an emended circumscription, one in the reinstated Cyathorhachis Nees ex Steud., one in Polytoca R.Br., and one in Trilobachne M. Schenck ex Henrard.

Taxonomic revision of Magnolia section Maingola (Magnoliaceae)

Abstract: Magnolia section Maingola Dandy is distinguished from other members of Magnoliaceae by the combination of a terminal brachyblast, cylindrical fruits, and free stipules. Morphological characters were re-examined for section Maingola and section Alcimandra, which has been considered to be closely related to the former. Although section Alcimandra is separated from section Maingola in having long stamens which hide the gynoecium, it is combined with section Maingola because this feature is frequently found in various other taxa of the family. Moreover, recent molecular phylogenetic studies have also demonstrated the close affinity between sections Maingola and Alcimandra. For the Magnolia macklottii complex, which has been problematic due to the wide range of variation in taxonomically important characters, a principal component analysis was carried out for 28 characters. Two varieties, M. macklottii var. macklottii and var. beccariana, are recognised in the complex. They are distinguished from each other mainly by hairs on fruit and peduncle (glabrous (to glabrescent)/densely hairy). Hairs on the twig, the length of scars of perianth and stamens, and leaf shape, which were previously regarded as important characters, could not separate the two varieties. In this study, seven species with five varieties are recognised in section Maingola.

Some Malesian species of Pouteria (Sapotaceae)

Abstract: Some Malesian species of Pouteria are described or redescribed in view of new or additional material. In some taxa a wide variability is found. It is proposed to accept Pennington’s system of the Sapotaceae as final, because the century-long battle over the systematics of that family has seriously havocked its taxonomy. Presented are: additions to the descriptions of Pouteria garcinioides, P. lamii, P. obovata, and P. occidentalis, redescriptions of P. anteridifera, P. cyclopensis, P. densinervia, P. kaernbachiana, P. keyensis, P. lanatifolia, P. ledermannii, P. monticola, P. thyrsoidea, and P. vrieseana, and descriptions of the new species P. gillisonii, P. menait, P. orkor, P. pullenii, P. ridsdalei, P. wandae, and P. whitmorei. Planchonella dies-reginae P. Royen is transferred and becomes Pouteria dies-reginae (P. Royen) Vink. Palaquium komakomar P. Royen becomes a synonym of Pouteria anteridifera (Lane-Poole) Baehni, Planchonella clementis H.J. Lam of Pouteria ledermannii (K. Krause) Baehni, and Planchonella maculata P. Royen of Pouteria monticola (K. Krause) H.J. Lam. Pouteria rhopalocarpa P. Royen is transferred from sect. Pierrisideroxylon to sect. Oligotheca.

New species of Ardisia (Myrsinaceae) from Malesia

Abstract: Twenty-seven new species, one new subspecies and five new varieties of Ardisia are described from the Flora Malesian region.

Ficus subgenus Pharmacosycea section Oreosycea (Moraceae) in the Solomon Islands, Fiji, and the New Hebrides

Abstract: A survey of the species of Ficus subg. Pharmacosycea sect. Oreosycea for the western Pacific region (excl. New Caledonia) with descriptions of and a key to the species presently recognised for the region is presented. Ten species are recognised, of which three species and one subspecies are new: F. bubulia C.C. Berg, F. magwana C.C. Berg, F. magwana subsp. maragona C.C. Berg, and F. setulosa C.C. Berg.

Revision of Coelogyne section Moniliformes (Orchidaceae) based on morphology, plastid and nrDNA ITS sequences

Abstract: Section Moniliformes Carr of the orchid genus Coelogyne is revised using morphological and molecular data. Twelve species are recognised, including two new ones (C. chanii and C. renae). and a dubious one (C. crassiloba). A combined analysis of morphological characters, and sequences of the nrDNA ITS region, matK gene, trnT-trnL intergenic spacer, trnL intron and trnL-trnF intergenic spacer supports the monophyly of the section as here recognised. Persistence of the rhizome scales, shape of the margin of the leaves, inflorescence type, shape of the rachis, its nodes and pedicel scars, indument of the floral bracts, lip size and depth of the sinus of the lateral lobes of the hypochile seem to be phylogenetically informative characters. Shape of the leaf blade, flowering mode, shape of the base and keels of the hypochile, shape of the apex of the lateral lobes and keels of the epichile and shape of the column show many parallelisms.

Three new species of the genus Lasianthus (Rubiaceae) from Vietnam

Abstract: Three new species of the genus Lasianthus (Rubiaceae) from Vietnam are recognised as L. elevatineurus, L. longissimus and L. oblongilobus.

The genus Freycinetia (Pandanaceae) in New Guinea (Part 4)

Abstract: Seventeen new species of Freycinetia Gaudich. are described from groups of islands of New Guinea: Freycinetia admiraltiensis, F. amoena, F. formosula, F. granulata, F. lanceolata, F. nakanaiensis, F. novobritannica (Bismarck Archipelago), F. relegata, F. rossellana (Louisiade Archipelago), F. angusta, F. awaiarensis, F. boluboluensis, F. fergussonensis, F. goodenoughensis, F. lenifolia, F. normanbyensis (D’Entrecasteaux Islands), and F. woodlarkensis (Woodlark Island). Specific characters from both gross morphology and anatomy of fruits, seeds, and leaf auricles are used for the description.

The genus Ptilothamnion (Ceramiaceae, Rhodophyta) in South Africa, with the description of P. goukammae spec. nov

Abstract: The genus Ptilothamnion Thur. in Le Jolis is represented in South Africa by three, or possibly four species: P. codicolum, P. polysporum, P. goukammae spec. nov., and reportedly P. subsimplex, all recorded after 1983. An earlier record of P. pluma is probably erroneous. The new species differs from known representatives of the genus by producing strictly one involucral filament from the hypogenous cell and additionally one from the subhypogenous cell. Ptilothamnion is a widespread genus, but rarely with more than two species in any given regional flora. A critical comparison of the c. 12 species shows that very few characters are shared by all of them.

Novitates Gabonensis 44. Uvaria annickiae, a name for a rare Uvaria species (Annonaceae) from Gabon

Abstract: Liana up to 20 m high. Branchlets and leaves beneath with many 1-2 mm long erect, fascicled hairs. Leaf-blade9-23 by 5-11.5 cm, widest above the middle, c. 13 pairs of laterals, base cordate, apex acuminate; petiole 8-11 mm long. Flowers single on the end of a branchlet, calyx cup-shaped in bud, petals 2.5-3 by 2.5-2.7 cm. Fruits covered with 1-2 mm long erect golden-brown hairs; stipe 2-4 cm long. Calyx often still present in fruit in the shape of a small saucer-shaped ring around the stipe. Monocarps up to 55 in a flower, distinctly lobed, more or less heart-shaped, usually 2-seeded, up to 2.5 cm long, 2 cm wide and 1.3 cm high; stipe 2-4.5 cm long. Distribution — Only known from Gabon. Habitat — Forest.

Ficus Baola, a new species of Ficus subgenus Urostigma section Malvanthera (Moraceae) from the Solomon Islands

Abstract: A new species of Ficus subg. Urostigma sect. Malvanthera, F. baola C.C. Berg, is described.

Nepenthes Vogelii (Nepenthaceae): a new species from Sarawak

Abstract: Nepenthes vogelii Schuit. & de Vogel is described as a new species from Sarawak. It is compared with N. fusca Danser, from which it differs e.g. in the much smaller pitchers, of which the lid lacks appendages.

Notes on Lepturus (Gramineae) in Malesia

Abstract: A survey of Lepturus R.Br. (Gramineae) in Malesia is given. Monerma P. Beauv. is superfluous, and hence Monermeae an illegitimate tribal name. One new variety of L. repens (G. Forst.) R.Br. is described.

A new species of Impatiens (Balsaminaceae) from Central Sulawesi

Abstract: A new species of Impatiens, I. punaensis Wiriad. & Utami from Punabesar, Central Sulawesi is described and illustrated for the first time.

Revision of the Malesian species of Micrococca (Euphorbiaceae)

Abstract: Micrococca is a rare genus represented in the Malesian region by only three species. Micrococca mercurialis (L.) Benth. is widespread, but in Malesia it is found only in Peninsular Malaysia. Micrococca malaccensis Airy Shaw and M. johorica Airy Shaw are both endemic to Johore. Micrococca can be distinguished from its close allies, Erythrococca and Claoxylon, by its interrupted racemes (with long internodes), pistillate flowers with elongated (strap-like) disc lobes, and a deeply 3-lobed, thinly crustaceous capsule dehiscing both septicidally and loculicidally. Micrococca mercurialis is a small-leaved shrub, while the other two species are trees with much larger leaves. Micrococca johorica has glands on the leaf bases, narrow leaves, and short inflorescences, whereas M. malaccensis lacks glands on the leaf bases, has wider leaves, and longer inflorescences.

A new species of Piper (Piperaceae) from the Seychelles

Abstract: A new species of Piper (Piperaceae), P. silhouettanum, is described from the Anse Mondon river valley, Silhouette Island, Seychelles. This species is close to P. nigrum but distinguished by its different venation, glabrous leaves, persistent elongated stipules and reduced bracts. This species is restricted to one valley where it is found in 1.7 hectares.

Additions to Asian Myristicaceae: Endocomia, Gymnacranthera, Horsfieldia, Knema, and Myristica

Abstract: In the genus Horsfieldia 5 new taxa are proposed, viz. one from Vietnam: H. micrantha W.J. de Wilde, a new variety from Thailand: H. amygdalina Wall. var. macrocarpa W.J. de Wilde, one species from the Philippines: H. romblonensis W.J. de Wilde, one species and a new variety both from West Papua: H. platantha W.J. de Wilde and H. subtilis (Miq.) Warb. var. auctissima W.J. de Wilde. Apart from additions and notes to Asian genera in Myristicaceae, a description in English of Myristica yunnanensis Y.H. Li is given. Horsfieldia kingii, Knema curtisii, Myristica cinnamomea, and M. yunnanensis are new records for Thailand; H. majuscula is a new record for Borneo.