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Year of Publication: 1980, Vol. 33 (01)
Date Published
1980
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Year of Publication: 1980, Vol. 33 (02)
Date Published
1980
Hsuan Keng
The genus Pyrenaria (Theaceae) in Malesia [Page 264 - 289]
The genus Pyrenaria (Theaceae) in Malesia [Page 264 - 289]
Abstract:
No abstract
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E.J.H. Corner
Boletus Longipes Mass., A Critical Malaysian Species [Page 290 - 296]
Boletus Longipes Mass., A Critical Malaysian Species [Page 290 - 296]
Abstract:
Boletus tristis Pat. et Baker is a synonym of B. longipes Mass. and is based on young specimens. The taxononiic position of B. longipes is problematic but it is retained in Boletus subgen. Tylopilus Karst. Austroboletus (Corner) Wolfe is not considered a satisfactory genus.
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Boletus tristis Pat. et Baker is a synonym of B. longipes Mass. and is based on young specimens. The taxononiic position of B. longipes is problematic but it is retained in Boletus subgen. Tylopilus Karst. Austroboletus (Corner) Wolfe is not considered a satisfactory genus.
E.J.H. Corner
Entoloma (Fr.) Kummer in the Malay Peninsula [Page 297 - 301]
Entoloma (Fr.) Kummer in the Malay Peninsula [Page 297 - 301]
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A.G. Alphonso
Dr. Caetano Xavier Furtado (1897-1980) [Page 302 - 302]
Dr. Caetano Xavier Furtado (1897-1980) [Page 302 - 302]
Obituary
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Hsuan Keng
On the Unification of Laplacea and Gordonia (Theaceae) [Page 303 - 311]
On the Unification of Laplacea and Gordonia (Theaceae) [Page 303 - 311]
Abstract:
Laplacea Kunth and Gordonia Ellis, generally treated as two separate genera, are not distinct and therefore do not merit full generic status.
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Laplacea Kunth and Gordonia Ellis, generally treated as two separate genera, are not distinct and therefore do not merit full generic status.
J.F. Maxwell
Taxonomic Notes on the Tribe Dissochaeteae (Naud.) Triana (Melastomatacea) [Page 312 - 327]
Taxonomic Notes on the Tribe Dissochaeteae (Naud.) Triana (Melastomatacea) [Page 312 - 327]
Abstract:
In a recent revision the tribe Dissochaeteae (Naud.) Triana has been found to include 54 species and 32 varieties which are in the following genera: Diplectria (Bl.) Reichb., Dissochaeta Bl., Macrolenes Naud., Creochiton Bl., and Pseudodissochaeta Nayar.* The first four genera are woody climbers, while the last genus has species which are mostly shrubs or trees up to 5 m tall. The entire tribe ranges from Assam, throughout SE Asia, Hainan, throughout the Malay Archipelago and the Philippines, to New Britain.
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In a recent revision the tribe Dissochaeteae (Naud.) Triana has been found to include 54 species and 32 varieties which are in the following genera: Diplectria (Bl.) Reichb., Dissochaeta Bl., Macrolenes Naud., Creochiton Bl., and Pseudodissochaeta Nayar.* The first four genera are woody climbers, while the last genus has species which are mostly shrubs or trees up to 5 m tall. The entire tribe ranges from Assam, throughout SE Asia, Hainan, throughout the Malay Archipelago and the Philippines, to New Britain.
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Year of Publication: 1979, Vol. 32
Date Published
1979
Catherine Woon and Hsuan Keng
Observation on Stamens of the Dipterocarpaceae [Page 1 - 55]
Observation on Stamens of the Dipterocarpaceae [Page 1 - 55]
Abstract:
The Dipterocarpaceae are a medium-sized family of approximately 15 genera and 580 species (Airy-Shaw, 1973). They are distributed over a large area of tropical Africa and the Indo-Malayan region from India, Ceylon, Indo-China, S. W. China to Malesia. In Malesia, according to Symington (1943) there are 14 genera and 168 species in the Malay Peninsula, 13 genera and 276 species in Borneo, 11 genera and 52 species in the Philippines, and 3 genera and 5 species in New Guinea. The distribution of this family is interesting because it links the flora of tropical Asia with that of tropical Africa where 2 genera Monotes and Marquesia are present. Croizat (1952, p. 423) suggested that the dipterocarps are most certainly of Gondwanic origin, and they evolved and migrated from the continental mass that once occupied part of the Indian Ocean 100-500 million years ago. They later broke up into 2 major taxa, the Dipterocarpoidae, mostly confined to the continental Asia and Malesia, and the Monotoideae, restricted to Africa. They ocur in area which have had a relatively stable geology since the Cretaceous, probably the time of their origin (Meijer, 1974). This family is especially noted for its many valuable timbers such as Meranti (Shorea), Keruing (Dipterocarp) from Malaya, Serayas and Lauans (Shorea and Parashorea) from Borneo and Philippines. The existing schemes of classification of the Dipterocarpaceae are largely based on the gross morphology. It is hoped that the comparative studies of the stamens of various genera of Dipterocarps, together with the information gathered from wood, pollens, cytology, embryogeny, phytochemistry and others, might eventually contribute towards a natural classification of the family. This is an excerpt of the senior author's Honours' dissertation entitled "Comparative studies on the stamens and pollen grains of the Dipterocarpaceae", Department of Botany, University of Singapore, 1977-78. She wishes to thank Professor A.N. Rao of the Department for providing all the facilities, and to thank the Directors and curators of the Herbarium of the Botanic Gardens, Singapore, the Forest Research Institute, Kepong, Malaya and the Forest Department, Kuching, Sarawak, for having kindly supplied flowering materials for this study. Her thanks are also due to Mr. D. Teow for making photographs, and to Mr. J. Wee for advice on microtechniques.
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The Dipterocarpaceae are a medium-sized family of approximately 15 genera and 580 species (Airy-Shaw, 1973). They are distributed over a large area of tropical Africa and the Indo-Malayan region from India, Ceylon, Indo-China, S. W. China to Malesia. In Malesia, according to Symington (1943) there are 14 genera and 168 species in the Malay Peninsula, 13 genera and 276 species in Borneo, 11 genera and 52 species in the Philippines, and 3 genera and 5 species in New Guinea. The distribution of this family is interesting because it links the flora of tropical Asia with that of tropical Africa where 2 genera Monotes and Marquesia are present. Croizat (1952, p. 423) suggested that the dipterocarps are most certainly of Gondwanic origin, and they evolved and migrated from the continental mass that once occupied part of the Indian Ocean 100-500 million years ago. They later broke up into 2 major taxa, the Dipterocarpoidae, mostly confined to the continental Asia and Malesia, and the Monotoideae, restricted to Africa. They ocur in area which have had a relatively stable geology since the Cretaceous, probably the time of their origin (Meijer, 1974). This family is especially noted for its many valuable timbers such as Meranti (Shorea), Keruing (Dipterocarp) from Malaya, Serayas and Lauans (Shorea and Parashorea) from Borneo and Philippines. The existing schemes of classification of the Dipterocarpaceae are largely based on the gross morphology. It is hoped that the comparative studies of the stamens of various genera of Dipterocarps, together with the information gathered from wood, pollens, cytology, embryogeny, phytochemistry and others, might eventually contribute towards a natural classification of the family. This is an excerpt of the senior author's Honours' dissertation entitled "Comparative studies on the stamens and pollen grains of the Dipterocarpaceae", Department of Botany, University of Singapore, 1977-78. She wishes to thank Professor A.N. Rao of the Department for providing all the facilities, and to thank the Directors and curators of the Herbarium of the Botanic Gardens, Singapore, the Forest Research Institute, Kepong, Malaya and the Forest Department, Kuching, Sarawak, for having kindly supplied flowering materials for this study. Her thanks are also due to Mr. D. Teow for making photographs, and to Mr. J. Wee for advice on microtechniques.
Wee, Yeow-Chin
Check List of Mosses of Singapore [Page 56 - 63]
Check List of Mosses of Singapore [Page 56 - 63]
Abstract:
A total of 126 species of mosses from 51 genera and 21 families, recorded from Singapore, are contained in this check list. Fleischer (1900 - 1922), in his four volumes on the moss flora of Bogor, Indonesia, listed a number of species collected from Singapore. Further records of local mosses are contained in Dixon's (1926) list of mosses from the Malay Peninsula, collected mainly by H. N. Ridley, I. H. Burkill, R. E. Holttum, and others from the Singapore Botanic Gardens. A list of the mosses collected from the Botanic Gardens itself was compiled by Holttum (1926). Further work was not seen until Johnson (1964) published her account on the Malaysian Leucobryaceae and much later, the Fissidentaceae (Johnson, 1973). Dixon's (1926) list is by far the most comprehensive, but it is very much outdated. The present paper is an attempt at updating the list of mosses recorded from Singapore. Most of the species are from the above mentioned papers. Those marked with an asterisk (*) are from the records of the Bryophyte Herbarium maintained by the Department of Botany, University of Singapore, as well as collections made by myself during the last two years. A total of 126 species from 51 genera and 21 families are included. The nomenclature and authorities cited are in accordance with Wijk et al. (1959 - 1969). The most appropriate name is given for each species, while any other name under which it has been reported is added in parenthesis.
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A total of 126 species of mosses from 51 genera and 21 families, recorded from Singapore, are contained in this check list. Fleischer (1900 - 1922), in his four volumes on the moss flora of Bogor, Indonesia, listed a number of species collected from Singapore. Further records of local mosses are contained in Dixon's (1926) list of mosses from the Malay Peninsula, collected mainly by H. N. Ridley, I. H. Burkill, R. E. Holttum, and others from the Singapore Botanic Gardens. A list of the mosses collected from the Botanic Gardens itself was compiled by Holttum (1926). Further work was not seen until Johnson (1964) published her account on the Malaysian Leucobryaceae and much later, the Fissidentaceae (Johnson, 1973). Dixon's (1926) list is by far the most comprehensive, but it is very much outdated. The present paper is an attempt at updating the list of mosses recorded from Singapore. Most of the species are from the above mentioned papers. Those marked with an asterisk (*) are from the records of the Bryophyte Herbarium maintained by the Department of Botany, University of Singapore, as well as collections made by myself during the last two years. A total of 126 species from 51 genera and 21 families are included. The nomenclature and authorities cited are in accordance with Wijk et al. (1959 - 1969). The most appropriate name is given for each species, while any other name under which it has been reported is added in parenthesis.
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Year of Publication: 1978, Vol. 31 (02)
Date Published
01 December 1978
R. Kiew
Notes on the Systematy of Malayan Phanerogams XXV AQUIFOLIACEAE [Page 81 - 83]
Notes on the Systematy of Malayan Phanerogams XXV AQUIFOLIACEAE [Page 81 - 83]
Abstract:
Ilex tahanensis Kiew nom. Nov. replaces I. rupicola Ridley — a nomen nudum; I. polyphylla Ridley and I. triflora var longifolia Ridley are reduced to I. triflora; and I. venulosa var nervulosa Loes. is I. Macrophylla Hook. F.
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Ilex tahanensis Kiew nom. Nov. replaces I. rupicola Ridley — a nomen nudum; I. polyphylla Ridley and I. triflora var longifolia Ridley are reduced to I. triflora; and I. venulosa var nervulosa Loes. is I. Macrophylla Hook. F.
Hsuan Keng
Annotated list of seed plants of Singapore [Page 84 - 113]
Annotated list of seed plants of Singapore [Page 84 - 113]
Abstract:
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Y.C. Wee
Vascular epiphytes of Singapore's wayside trees [Page 114 - 126]
Vascular epiphytes of Singapore's wayside trees [Page 114 - 126]
Abstract:
No abstract
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Hsuan Keng
The delimitation of the genus Magnolia (Magnoliaceae) [Page 127 - 131]
The delimitation of the genus Magnolia (Magnoliaceae) [Page 127 - 131]
Abstract:
Aromadendron Blume, Manglietia Blume and Talauma Juss. are reunited with Magnolia Linn. As advocated by H. Baillon. Species of the first three genera from the Malay Peninsula and Thailand are renamed.
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Aromadendron Blume, Manglietia Blume and Talauma Juss. are reunited with Magnolia Linn. As advocated by H. Baillon. Species of the first three genera from the Malay Peninsula and Thailand are renamed.
May Lay Fu Fan
Clonal Propagation of Aranda, Ascocenda, Cattleya by Leaf Tissue Culture [Page 132 - 138]
Clonal Propagation of Aranda, Ascocenda, Cattleya by Leaf Tissue Culture [Page 132 - 138]
Abstract:
Monopodial Orchids seem to differ from sympodial orchids in their response to tissue culture. We chose both monopodial orchids and sympodial orchids as materials to study their proliferation ability by leaf tissue culture. Originally leaves of aseptic mericlone plantlets of Aranda Noorah Alsagoff (monopodial), Cattleya bowringiana x C. forbesii (sympodial) and Den. Alice Spalding (sympodial) were used. Subsequently, leaves of mature nursery plants of Aranda Wendy Scott, Aranda Christine No 27, No. 130, Asocenda Hilo Rose x Vanda Josephine (monopodial) and Den. Sunny (sympodial) were experimented with. Numerous plantlets from all, except the Dendrobiums, were successfully obtained by leaf tissue culture.
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Monopodial Orchids seem to differ from sympodial orchids in their response to tissue culture. We chose both monopodial orchids and sympodial orchids as materials to study their proliferation ability by leaf tissue culture. Originally leaves of aseptic mericlone plantlets of Aranda Noorah Alsagoff (monopodial), Cattleya bowringiana x C. forbesii (sympodial) and Den. Alice Spalding (sympodial) were used. Subsequently, leaves of mature nursery plants of Aranda Wendy Scott, Aranda Christine No 27, No. 130, Asocenda Hilo Rose x Vanda Josephine (monopodial) and Den. Sunny (sympodial) were experimented with. Numerous plantlets from all, except the Dendrobiums, were successfully obtained by leaf tissue culture.
J.F. Maxwell
A revision of Medinilla, Pachycentria, and Pogonanthera (Melastomataceae) from the Malay Peninsula [Page 139 - 216]
A revision of Medinilla, Pachycentria, and Pogonanthera (Melastomataceae) from the Malay Peninsula [Page 139 - 216]
Abstract:
The genera Medinilla, Pachycentria, and Pogonanthera have been thoroughly revised for the Malay Peninsula. Fourteen species and 3 varieties of Medinilla, including Medinilla selangorensis Maxw., which is proposed as a new species, with 12 new synonyms, and 3 new combinations; 3 species of Pachycentria, with 1 new combination; and Pogonanthera pulverulenta (Jack) Bl. are included. In addition to the taxonomic treatment (with keys and critical notes), the comparative morphologies of various salient organs, distribution patterns, and an index to collections are presented. Drawings of the calyx, petals, stamens, and other important structures have been prepared for all taxa.
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The genera Medinilla, Pachycentria, and Pogonanthera have been thoroughly revised for the Malay Peninsula. Fourteen species and 3 varieties of Medinilla, including Medinilla selangorensis Maxw., which is proposed as a new species, with 12 new synonyms, and 3 new combinations; 3 species of Pachycentria, with 1 new combination; and Pogonanthera pulverulenta (Jack) Bl. are included. In addition to the taxonomic treatment (with keys and critical notes), the comparative morphologies of various salient organs, distribution patterns, and an index to collections are presented. Drawings of the calyx, petals, stamens, and other important structures have been prepared for all taxa.
Irawati
The influence of Sucrose on Tissue Cultures of Oncidium Goldiana, Dendrohium Alice Spalding and Aranthera Beatrice Ng [Page 217 - 221]
The influence of Sucrose on Tissue Cultures of Oncidium Goldiana, Dendrohium Alice Spalding and Aranthera Beatrice Ng [Page 217 - 221]
Abstract:
Tissue culture today plays an important role in the production of orchid clones throughout the world. This technique applied to orchid plants by Morel (1960) is still being perfected by other research workers. Research workers have used a wide range of media for their cultures but the perfect medium for each stage of orchid culture has still to be found. This work is done to determine the beneficial or detrimental effects of sucrose in the culture medium.
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Tissue culture today plays an important role in the production of orchid clones throughout the world. This technique applied to orchid plants by Morel (1960) is still being perfected by other research workers. Research workers have used a wide range of media for their cultures but the perfect medium for each stage of orchid culture has still to be found. This work is done to determine the beneficial or detrimental effects of sucrose in the culture medium.
Sri Harjoeti Hartono
The influence of some Growth Substances on Induction of Roots and Shoots of Renanopsis Lena Rowold [Page 222 - 228]
The influence of some Growth Substances on Induction of Roots and Shoots of Renanopsis Lena Rowold [Page 222 - 228]
Abstract:
Renanopsis Lena Rowold (Renanthera storiei X Vandopsis lissochiloides) first raised in Hawaii by Oscar M. Kirch in 1948, is found growing at the Singapore Botanic Gardens. It is a monopodial type orchid with a thick woody stem. The plant produces large attractive inflorescences having dark red flowers with light orange markings. The inflorescences, often branched are about 100-135 cm long and each bears about 45-70 flowers. Unfortunately, most of R. Lena Rowold plants do not produce sufficient roots along the stem and thus vegetative propagation by the normal method of cuttings is not possible. Monopodial orchids usually produce aerial roots along the stem and this is an important feature for vegetative propagation as cuttings made for propagation must have roots. The aim of the experiment conducted at the Singapore Botanic Gardens recently was to promote the growth of shoots and roots by the application of growth substances on top cuttings, base cuttings and whole plants.
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Renanopsis Lena Rowold (Renanthera storiei X Vandopsis lissochiloides) first raised in Hawaii by Oscar M. Kirch in 1948, is found growing at the Singapore Botanic Gardens. It is a monopodial type orchid with a thick woody stem. The plant produces large attractive inflorescences having dark red flowers with light orange markings. The inflorescences, often branched are about 100-135 cm long and each bears about 45-70 flowers. Unfortunately, most of R. Lena Rowold plants do not produce sufficient roots along the stem and thus vegetative propagation by the normal method of cuttings is not possible. Monopodial orchids usually produce aerial roots along the stem and this is an important feature for vegetative propagation as cuttings made for propagation must have roots. The aim of the experiment conducted at the Singapore Botanic Gardens recently was to promote the growth of shoots and roots by the application of growth substances on top cuttings, base cuttings and whole plants.
Anne Johnson
The Trentepohliaceae of Singapore Island [Page 229 - 237]
The Trentepohliaceae of Singapore Island [Page 229 - 237]
Abstract:
The Trentepohliaceae are a family of aerial algae, abundant in the tropics but also found in temperate regions. They grow on rocks, soil, the bark of trees or as apiphytes or parasites of leaves. The vegetative cells may appear green if the plant is growing in the shade but they are normally brick-red in colour due to a pigment, formerly known as "haematochrome," which is a mixture of x and B carotenes (Tischcr, 1936; Czyan & Kalb, 1960) dissolved in oil droplets in the cell. Pyrenoids are absent and starch is not formed, the product of photosynthesis being apparently a polyhydric alcohol, erythritol, (Bourne, 1958) which may accur in Trentepohlia in up to 1.4% concentration (Tischer. 1936). As in other terrestrial algae, large vacuoles containing water are absent.
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The Trentepohliaceae are a family of aerial algae, abundant in the tropics but also found in temperate regions. They grow on rocks, soil, the bark of trees or as apiphytes or parasites of leaves. The vegetative cells may appear green if the plant is growing in the shade but they are normally brick-red in colour due to a pigment, formerly known as "haematochrome," which is a mixture of x and B carotenes (Tischcr, 1936; Czyan & Kalb, 1960) dissolved in oil droplets in the cell. Pyrenoids are absent and starch is not formed, the product of photosynthesis being apparently a polyhydric alcohol, erythritol, (Bourne, 1958) which may accur in Trentepohlia in up to 1.4% concentration (Tischer. 1936). As in other terrestrial algae, large vacuoles containing water are absent.
Y.C. Wee
Annotated list of algae of Singapore (1) [Page 238 - 250]
Annotated list of algae of Singapore (1) [Page 238 - 250]
Abstract:
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Year of Publication: 1978, Vol. 31 (01)
Date Published
14 November 1978