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BLUMEA BLUMEA[Top of this page] [Catalogue of publications] [NHN]
A revision of Calyptrocalyx and the New Guinea species of Linospadix (Linospadicinae: Arecoideae: Arecaceae) is provided. For Calyptrocalyx, twenty-six species are recognised, and two for Linospadix. Three species, Calyptrocalyx amoenus, C. awa, and C. yamutumene are described as new. The following new combinations are made: Calyptrocalyx arfakianus, C. caudiculatus, C. flabellatus, C. geonomiformis, C. hollrungii, C. julianettii, C. lepidotus, C. merrillianus, C. micholitzii, C. multifidus, and C. pusillus which were formerly species of Paralinospadix. Neotypes are proposed for C. lauterbachianus, C. laxiflorus, C. pachystachys, C. pauciflorus, and C. polyphyllus. Linospadix has two species in New Guinea, L. albertisiana and L. canina.
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Sixteen new Amorphophallus (Araceae) species from East Malaysia, Thailand and Vietnam are described and figured. Moreover, six species, four of which were originally published by the first author, are synonymized.
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In a taxonomic revision of the genus Blechnum of the Malesian region 20 taxa (17 species and 3 subspecies) are recognised. Much of the past confusion over names, especially of the Papua New Guinea taxa, has been the result of some species being based on inadequate, often single, collections. One new species and one new subspecies are described and two new combinations are made. Forty-three species and seven varieties are put into synonymy. A key, full descriptions, distribution maps and illustrations of the less well understood taxa, as well as scanning electron microscope images of the spores, are presented. Where a taxon also occurs outside the Malesian region, full distributional details are provided, so far as can at present be verified by field observations and herbarium collections. The distribution patterns of a number of the taxa appear to be closely related to their limited ecological tolerances. The biogeography of the genus in the Malesian region is discussed.
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The monophyletic genus Melastoma (Melastomataceae) is centred in Southeast Asia, but extends to India, South China, Japan, northern Australia, and Oceania. It comprises 22 species, two subspecies, and three varieties. Two new species, Melastoma sabahense and M. minahassae, and a new variety, M. sanguineum var. ranauensis, are described; two species are reduced to subspecies and variety, respectively, and the genus Otanthera is transferred to Melastoma. In many species, especially M. malabathricum, morphological characters vary locally, which resulted in the taxonomic recognition of numerous geographically restricted entities here considered synonyms. Most species of Melastoma are pioneers with a high dispersal capacity. This may have resulted in small, relatively isolated populations in which unique character combinations were stabilised locally.
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The genus Eremochloa Buse (Gramineae) is revised. Eleven species (2 new) and two varieties are recognized. For one species a new name was necessary. The genus appears to be most similar to Rhytachne Desv. of the Andropogoneae–Rottboelliinae.
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Last modified april 24, 2006 by P. Hovenkamp.