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A CRITICAL STUDY IN THE COMPLEX-POLYMORPHOUS GENUS SCHIMA (THEACEAE) BLOEMBERGEN, S.
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Â 1. The author considers the genus Schima monotypic. Its only species, Schima wallichii (DC.) Korth., is subdivided into nine geographically separated subspecies and three varieties.These may be recognised sometimes by one dominating chax*acter,mostly, however, by a complex of characters.Several new combinations are made.2. Yet the variability of most of the subspecies is still often enormous and at first sight appears complex. Thus we may often encounter the polymorphy of the whole species in its subspecies again. It was the striking different percentage-numbers of(phenotypically) about the same characters which turned the scale in favour of the recognition of the subspecies, besides their geographic separation.The attempts made by the author to divide certain resulting complex-polymorphous subspecies into units of still lower rank and to trace correlations with peculiarities of environment such as different heights above sealevel, or with different stages in the age of the trees, failed. 3. On account of these negative results and the above mentioned different percentage-numbers for phenotypically about the same characters, the author came to the conclusion that the most probable explanation is that the variability within the subspecies is just due to Mendel-segregation and nothing else.It looks very much as if one is dealing here with the inheriting of striking characters, each caused by one or only a few polymeric factors, characters which hold their own, just as in panmictlcally propagated populations (by cross-pollination). This explanation, too,makes the striking fact that in some subspecies we find back phenotypically the whole, or part, of the polymorphy of the entire species more understandable, as well as the fact that individuals of different subspecies may agree phenotypically, whereas genotypically they belong to different races (subspecies), Moreover, all these phenomena strongly support the monotypic conception of the genus. 4. The author saw few examples from the area outside Indonesia. However,this does neither influence his monotypic conception of the genus, nor his method of dividing it into units of lower ranks. The study of the scanty amount of specimens,literature, and the drawings seen appeared more than sufficiently convincing. Yet he is not quite certain whether the correct rank was ascribed to some of the lower taxa involved. It would perhaps have been advisable to consider the variety superba and the continental parts of the subspecies oblata and monticola as distinct subspecies.Future consideration of this matter shall have to decide.

SERTULUM DIPTEROCARPACEARUM MALAYENSIUM-âV* SLOOTEN, D. F. VAN
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v2i1.1015

Some 70 years ago Thiselton Dyer showed Dipterocarpaceae from New Guinea to the Linnean Society of London. This event is referred to in the "Journal of Botany"1"Mr Tbiselton Dyer exhibited the Dipterocarpaceae collected by Beccari on his visit to New Guinea in 1872. These were only three in number, an extremely poor result compared with the extraordinary abundance and variety in the forms belonging to this family previously collected by the same botanist in the adjacent island of Borneo, . . The Dipterocarpaceae being, perhaps, the most characteristic family of the IndoMalayan Flora,the poverty of its representation in New Guinea was a conclusive proof that its vegetation was not a markedly Malayan type."

A REVISION OF THE GENUS ARCHIDENDRON F. MUELL. (MIMOSACEAE) DE WIT, H. C. D.
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

1. The present paper is the authors second revision of the genus Archidendron.The validity of the genus is briefly discussed.2. The genus has its centre of speciation in New Guinea. The number of speciestreated is 31, not counting a few insufficiently known species. A key is given to thespecies and varieties, which are described.3. The following are new species or varieties: Archidendron affine De Wit,A. calliandrum De Wit, A. dies-Christi De Wit, A. nervosum De Wit, A. parviflorumvar. longipes De Wit, and A. trifoliolatum De Wit.4. New combinations are: Archidendron gogolense (K. Schum. & Laut.) De Wit(basonym: Hansemannia gogolense K. Schum. & Laut.) and A.lucyi var. schleohterii(Harms) De Wit (basonym: Archidendron schlechterii Harms). .

NOTES ON MALAYSIAN CYPERACEAE KERN, J. H.
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

This is the first paper of a series, in which preparatory to a more comprehensive treatment for "Flora Malesiana," some noteworthy Malaysian Cyperaceae will be dealt with. It is based on the material of this family in the Herbaria at Bogor (BO), Leiden (L), and Singapore (S).My sincere thanks are extended to the Directors of these institutions for giving me the opportunity to study their rich collections.In 1935â36 Kiikenthals excellent monograph on the genus Cyperus in Englers "Pflanzenreich" appeared.Unfortunately that author revised only a few specimens of the herbaria already mentioned,so that the basis for the distribution of the genus in Malaysia, as given in his invaluable work, compares unfavourably with that of the species of other regions.Kiikenthals delimitation of the genus is readily accepted; in general his arrangement of the species is also followed, although I cannot agree with Kiikenthals assertion that his system should be in close accordance with the genetic development of the genus.On the whole only the synonymy important for the Malaysian region is given below. For a more complete account the reader is referred to Kiikenthals monograph, in which of course the literature of merely regional interest could not always be fully considered.The accompanying plates are part of a series, drawn under mysupervision by two of the draughtsmen of Herbarium Bogoriense, Sukirno and Md. Anwar.

AN ADDITIONAL NOTE ON VIBURNUM CLEMENSAE KERN KERN, J. H.
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

In "Reinwardtia" (1: 157. 1951) I published a new species of Viburnum from Mount Kinabalu, Borneo, under the name of V. clemensae.The description was drawn up after fruiting specimens in the Herbarium of the Arnold Arboretum. Unfortunately flowers were wanting in the specimens available.Some time ago Dr. A. J. G. H. Kostermans came across much more complete material among the indeterminata of the Bogor Herbarium, profusely flowering as well as fruiting. This enables the amplification of the description.

AN ADDITIONAL NOTE ON VIBURNUM CLEMENSAE KERN J. H. KERN
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v2i1.1018

A CRITICAL STUDY IN THE COMPLEX-POLYMORPHOUS GENUS SCHIMA (THEACEAE) S. BLOEMBERGEN
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v2i1.1019

1. The author considers the genus Schima monotypic. Its only species, Schima wallichii (DC.) Korth., is subdivided into nine geographically separated subspecies and three varieties.These may be recognised sometimes by one dominating chax*acter,mostly, however, by a complex of characters.Several new combinations are made.2. Yet the variability of most of the subspecies is still often enormous and at first sight appears complex. Thus we may often encounter the polymorphy of the whole species in its subspecies again. It was the striking different percentage-numbers of(phenotypically) about the same characters which turned the scale in favour of the recognition of the subspecies, besides their geographic separation.The attempts made by the author to divide certain resulting complex-polymorphous subspecies into units of still lower rank and to trace correlations with peculiarities of environment such as different heights above sealevel, or with different stages in the age of the trees, failed. 3. On account of these negative results and the above mentioned different percentage-numbers for phenotypically about the same characters, the author came to the conclusion that the most probable explanation is that the variability within the subspecies is just due to Mendel-segregation and nothing else.It looks very much as if one is dealing here with the inheriting of striking characters, each caused by one or only a few polymeric factors, characters which hold their own, just as in panmictlcally propagated populations (by cross-pollination). This explanation, too,makes the striking fact that in some subspecies we find back phenotypically the whole, or part, of the polymorphy of the entire species more understandable, as well as the fact that individuals of different subspecies may agree phenotypically, whereas genotypically they belong to different races (subspecies), Moreover, all these phenomena strongly support the monotypic conception of the genus. 4. The author saw few examples from the area outside Indonesia. However,this does neither influence his monotypic conception of the genus, nor his method of dividing it into units of lower ranks. The study of the scanty amount of specimens,literature, and the drawings seen appeared more than sufficiently convincing. Yet he is not quite certain whether the correct rank was ascribed to some of the lower taxa involved. It would perhaps have been advisable to consider the variety superba and the continental parts of the subspecies oblata and monticola as distinct subspecies.Future consideration of this matter shall have to decide.

SERTULUM DIPTEROCARPACEARUM MALAYENSIUM-”V* D. F. VAN SLOOTEN
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v2i1.1015

NOTES ON MALAYSIAN CYPERACEAE J. H. KERN
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v2i1.1017

This is the first paper of a series, in which preparatory to a more comprehensive treatment for "Flora Malesiana," some noteworthy Malaysian Cyperaceae will be dealt with. It is based on the material of this family in the Herbaria at Bogor (BO), Leiden (L), and Singapore (S).My sincere thanks are extended to the Directors of these institutions for giving me the opportunity to study their rich collections.In 1935—36 Kiikenthal's excellent monograph on the genus Cyperus in Engler's "Pflanzenreich" appeared.Unfortunately that author revised only a few specimens of the herbaria already mentioned,so that the basis for the distribution of the genus in Malaysia, as given in his invaluable work, compares unfavourably with that of the species of other regions.Kiikenthal's delimitation of the genus is readily accepted; in general his arrangement of the species is also followed, although I cannot agree with Kiikenthal's assertion that his system should be in close accordance with the genetic development of the genus.On the whole only the synonymy important for the Malaysian region is given below. For a more complete account the reader is referred to Kiikenthal's monograph, in which of course the literature of merely regional interest could not always be fully considered.The accompanying plates are part of a series, drawn under mysupervision by two of the draughtsmen of Herbarium Bogoriense, Sukirno and Md. Anwar.

A REVISION OF THE GENUS ARCHIDENDRON F. MUELL. (MIMOSACEAE) H. C. D. DE WIT
REINWARDTIA Vol 2, No 1 (1952): vol.2 no.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v2i1.1016

1. The present paper is the author's second revision of the genus Archidendron.The validity of the genus is briefly discussed.2. The genus has its centre of speciation in New Guinea. The number of speciestreated is 31, not counting a few insufficiently known species. A key is given to thespecies and varieties, which are described.3. The following are new species or varieties: Archidendron affine De Wit,A. calliandrum De Wit, A. dies-Christi De Wit, A. nervosum De Wit, A. parviflorumvar. longipes De Wit, and A. trifoliolatum De Wit.4. New combinations are: Archidendron gogolense (K. Schum. & Laut.) De Wit(basonym: Hansemannia gogolense K. Schum. & Laut.) and A.lucyi var. schleohterii(Harms) De Wit (basonym: Archidendron schlechterii Harms). .

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