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| Registros recuperados: 24 | |
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| Ridsdale, C.E.. |
| The present paper reviews the genus Aidia s.l. (including Anomanthodia and Gynopachis) in Southeast Asia and Malesia. Relationships to Pelagodendron are discussed. The taxonomic variation of characters within the genus is reviewed. In this review 16 new species and 2 new varieties are described, and 14 new species combinations are made in Aidia. Aidiopsis orophila and Fagerlindia canthoides are new combinations in the respective genera. A complete index of names is given. |
| Tipo: Article / Letter to the editor |
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| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/524512 |
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| Ridsdale, C.E.. |
| A world wide revision of the genera Mitragyna s.l. and Uncaria both placed in the subtribe Mitragyninae Havil. of the tribe Cinchoneae, with a general discussion on the affinities of the genera, the growth form and architecture. In Mitragyna 10 species and in Uncaria 34 species are recognized; 4 new forms of Uncaria are described. There are keys to the genera and species. The species occurring in continental Asia but not in Malesia have complete synonymy and descriptions whilst the African, American, and Malesian species are treated in an abbreviated form. A complete list of scientific names is included. |
| Tipo: Article / Letter to the editor |
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| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/526185 |
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| Ridsdale, C.E.. |
| A world wide revision of the family with a general discussion of the systematic position, the affinities within the family, the morphology of leaves, flowers, and seeds, the chromosome number, and the geographic distribution. Types of ruminate endosperm of the seed, previously unknown in the family, are illustrated and new types of pearl glands of the leaves are described. A single genus with 34 species is recognized, 32 of which occur in the Indo-Malesian area and 2 are restricted to the Afro-Madagascan area. One new species from New Guinea is described. There is a key to all species, followed by descriptions of the non-Malesian ones and full synonymy of all taxa together with distribution data. A complete revaluation of specific characters has resulted... |
| Tipo: Article / Letter to the editor |
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| Ano: 1974 |
URL: http://www.repository.naturalis.nl/record/525505 |
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| Jansen, M.E.; Ridsdale, C.E.. |
| A complete revision of the genus Dolicholobium placed in the tribe Cinchoneae with a general discussion of taxonomic affinities and architecture. In total 28 species are recognized of which 14 new, described by M.E. Jansen: D. barbatum, D. cordatum, D. crassicarpum, D. glabrum, D. linearilobum, D. longifructum, D. minutilobum, D. moluccense subsp. moluccense and subsp. fusiformis, D. nakiki, D. parviflorum, D. ridsdalei, D. riuense, D. rheophilum, D. seruiense. Keys are provided to all species and separate keys to the species of the Solomon Islands and Fiji. The previously known Malesian species are treated in abbreviated form. A complete list of scientific names is included. |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/525872 |
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| Ridsdale, C.E.. |
| A world-wide revision of the tribe Naucleeae with a general discussion of the systematic position and affinities of the tribe and the genera. The generic concepts have been modified and 21 genera are recognized (Ochreinauclea, Ludekia, Diyaminauclea, Khasiaclunea, Adinauclea, Sinoadina, Pertusadina, and Haldina being new), which are placed in three subtribes, Anthocephalinae, Naucleinae, and Adininae, sublrib. now There are keys to the subtribes, genera, and species, followed by descriptions of the Asiatic and Malesian genera. The Asiatic species are described and accompanied by complete synonymy, but the Malesian species are treated in an abbreviated form. Three new species are described: Myrmeconauclea stipulacea, Ludekia borneensis, and Pertusadina... |
| Tipo: Article / Letter to the editor |
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| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/524828 |
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| Ridsdale, C.E.; Bakhuizen van den Brink Jr, R.C.. |
| The centre of distribution of the Naucleeae is Malesia and Asia, there are but a few African and Madagascan representatives. The revision of the group for Flora Malesiana entailed an extensive nomenclatural evaluation and typification of the genera (Bakhuizen van den Brink Jr., 1970). This has been followed by detailed taxonomic investigations and a re-evaluation of the tribal and generic limits. The Naucleeae, as conceived by K. Schumann (1891), have mostly been considered a highly natural group (Verdcourt, 1958) and have even been raised to family status (Airy Shaw, 1973). Bremekamp (1966) has been the only botanist ever to question the homogeneous nature of the Naucleeae. However, after re-examination of materials of most representatives of all genera... |
| Tipo: Article / Letter to the editor |
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| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/525555 |
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| Zhu, H.; Roos, M.C.; Ridsdale, C.E.. |
| Based on herbarium collections, the Malesian species of the genus Lasianthus are revised. A total of 131 species including 5 subspecies and 6 varieties are recognized from the Malesian region, of which 41 species, 3 subspecies and 3 varieties are described as new, and 3 new combinations are made for varieties. 22 species names and 15 variety names are reduced to synonyms. Ten species names and 2 varieties are treated as dubious mainly because their types cannot be traced. Additionally, 11 species are further excluded from Lasianthus. All species are described and a key to Malesian Lasianthus is given. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Lasiantheae; Lasianthus; Malesia; Revision; Rubiaceae. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/526201 |
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| Ridsdale, C.E.. |
| Jackia, published by Wallich, in 1824, is a well-known genus of uncertain tribal position within the Rubiaceae. Unfortunately there is an earlier, overlooked, genus published by Blume commemorating W. Jack (1795 – 1822). This has been cited in Index Kewensis 1 (1895) 1245 as being published in 1825, but the correct date is 1823 as indicated on the cards of the Index Nominum Genericorum. Blume (1823) consistently used the spelling Jakkia’; however, in 1825 he altered the spelling to ‘Jackia’ and added further species to the genus. Thus, it cannot be argued according to article 73 of the Code that Blume misspelled the latinized name of Jack. Jakkia and Jackia are to be treated as orthographic variants according to article 75 of the Code. Airy Shaw in Willis,... |
| Tipo: Article / Letter to the editor |
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| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/525784 |
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| Ridsdale, C.E.. |
| The monogeneric family is placed in the Rhamnales in the system of ENGLER and is closely allied to the Vitaceae, sometimes considered as a subfamily or tribe of that family. Distinguished from the Vitaceae by the development of a complex staminodial tube, by the presence of one ovule in each locule of the ovary. Pollen is also distinct from that in Vitaceae, supporting the segregation into a separate family. Seed and embryo features and the presence of pearl glands on the vegetative organs indicate a very close affinity with the Vitaceae but not to other families. |
| Tipo: Article / Letter to the editor |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/532527 |
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| Ridsdale, C.E.. |
| This bizarre pachycaul genus was described and well-figured by Valeton (1911) from a single collection and for many years known under the illegitimate name Chaetostachys. A second specimen was later annotated by Valeton as belonging to the same species. Re-examination of this material has shown that the two collections cannot be considered to be conspecific. It was also found that the second collection and later conspecific collections have 5-merous flowers. |
| Tipo: Article / Letter to the editor |
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| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/525479 |
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| Ridsdale, C.E.; Bakhuizen van den Brink, R.C.; Koek-Noorman, J.. |
| Within the rain forests of New Guinea there are many small pachycaul treelets belonging to the Rubiaceae. Generally these are rare in occurrence and poorly represented in the herbarium, due in part to the problem of protecting rami- or cauliflorous flowers and fruits during routine processing and storage. All have a similar general appearance and are difficult to assign to a particular genus. Indeed, the generic limits and relationships of many have been in doubt since they were described and few have been re-investigated in light of more recent collections and ideas. Versteegia and Maschalodesme are two of the better known genera. These are considered from a taxonomic point of view together with notes on the wood anatomy and cuticular structures. The... |
| Tipo: Article / Letter to the editor |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/525512 |
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| Hovenkamp, P.H.; Veldkamp, J.F.; Nooteboom, H.P.; Nooteboom, H.P.; Hovenkamp, P.H.; Ridsdale, C.E.. |
| DUNCAN, B.D. & G. ISAAC. Ferns and allied plants of Victoria, Tasmania and South Australia. Melbourne University Press, Melbourne. 1986. xii, 258 pp., line drawings, maps, b/w photogr., 8 col. pl. In Europe available from HB Sales, Littleton Road, Ashford TW15 1UQ, U.K. Ł 25.00. ISBN 0-522-84262-3. A beautifully and lavishly illustrated, thorough account of the 128 ferns and fern-allies of the Southernmost extremities of the Australian subcontinent. For the Malesian oriented scientist primarily interesting because of the excellent view it offers of a flora that is close to the Malesian flora on the generic level (almost 90% of the genera enumerated in common) and at the same time very distinct on the specific level (hardly 16% in common). |
| Tipo: Article / Letter to the editor |
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| Ano: 1987 |
URL: http://www.repository.naturalis.nl/record/532911 |
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| Ridsdale, C.E.. |
| Spathichlamys, a quite remarkable genus of the Rondeletieae is only known from the type collection from Burma. In fruit it could easily be mistaken for Wendlandia, but it differs from this genus in the flattened ovate stipules. The flowering material is most interesting, the anthers are contained within the long corolla tube which later splits and rolls open to expose the anthers. As far as is known this character of splitting of the corolla tube has only been reported elsewhere in the Rubiaceae in the African genus Dorothea Wernh. (Gardenieae); the splitting of the corolla is the main character separating it from the closely allied Aulacocalyx, in which genus it is currently placed in most recent works. However, in Dorothea, the style apparently curves... |
| Tipo: Article / Letter to the editor |
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| Ano: 1982 |
URL: http://www.repository.naturalis.nl/record/525517 |
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| Ridsdale, C.E.. |
| Whilst working on the Rubiaceae for Flora Malesiana Prof, van Steenis brought to my attention the publication of Gagnepain of the genus Quiducia which seemed to occupy a most anomalous position in the tribe Psychotrieae. On examining the type material it soon became apparent that Quiducia represents a species of Silvianthus (Carlemanniaceae/ /Caprifoliaceae and is conspecific with the species described by Airy Shaw; the slight descrepancies between the two species as regards the placentation must be considered as faulty observation by Gagnepain. |
| Tipo: Article / Letter to the editor |
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| Ano: 1978 |
URL: http://www.repository.naturalis.nl/record/524941 |
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| Registros recuperados: 24 | |
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