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| Registros recuperados: 13 | |
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| Hovenkamp, P.H.. |
| In a revision of the Malesian representatives of the genus Selliguea (Polypodiaceae) several recently collected specimens form Borneo were found to represent a very distinct, but hitherto undescribed species. From the few collections seen so far, it appears that the new species is not a very narrow endemic, and the fact that it has only been collected after 1970 probably is an indication of the increasingly intensive exploration of Borneo in recent times. In so far as the specimens had been identified, the names S. feei Bory and S. heterocarpa (Blume) Blume had been applied. In general habit, the species is closest to S. heterocarpa, but can be distinguished by the following characters: Selliguea heterocarpa — Rhizome 2-4 mm thick; rhizome scales peltate,... |
| Tipo: Article / Letter to the editor |
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| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/524478 |
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| Hovenkamp, P.H.; Viane, R.L.L.; Bremer, P.. |
| Dryopteris expansa was recently discovered at two localities in the Netherlands (Havelterberg, prov. of Drenthe; Kuinderbos, prov. of Flevoland). Its diagnostic characters and taxonomic status are discussed. The taxon is morphologically very similar to D. dilatata and can only be identified by means of microscopical research (microglands c. 80 µm against c. 110 µm in D. dilatata; the diploid chromosome number whereas D. dilatata is a tetraploid). Nevertheless it is concluded that it must be regarded as a separate species. In the field D. expansa resembles Athyrium filix-femina in the light green colour and the soft texture of the lamina. |
| Tipo: Article / Letter to the editor |
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| Ano: 1990 |
URL: http://www.repository.naturalis.nl/record/527546 |
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| Hovenkamp, P.H.. |
| Polypodiaceae Berchtold & J. Presl, Přir. Rostlin. 1 (1820) 272; Ching, Sunyatsenia 5 (1940) 257; Copel., Gen. Fil. (1947) 174; Holttum, Revis. Fl. Malaya 2 (1955) 129; Copel., Fern Fl. Philipp. (1960) 453; Hennipman et al. in Kramer & Green, Fam. & Genera Vase. PI. 1 (1990) 203. — Type genus: Platyceriaceae Polypodium. Ching, Sunyatsenia 5 (1940) 256. — Type genus: Drynariaceae Platycerium. Ching, Acta Phytotax. Sin. 16 (1978) 1. — Type genus: Drynaria. Rhizome creeping, dorsiventral, with two alternating dorsal rows ofphyllopods and two alternating lateral rows of buds; scales basifixed, pseudopeltate to peltate, clathrate or isotoechous, margin entire to ciliate. Anatomy: ground tissue parenchymatous or rarely sclerenchymatous, with or... |
| Tipo: Article / Letter to the editor |
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| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/532732 |
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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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| Registros recuperados: 13 | |
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