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Reviews Naturalis
Welzen, P.C. van; Ham, R.W.J.M. van der; Heel, W.A. van; Uffelen, G.A. van; Wilde, W.J.J.O. de; Kalkman, C.; Valkenburg, Johan L.C.H. van.
This project of the Royal Botanic Garden Edinburgh aims to provide regional manuals and on-line identification computer programs to the timber species of Dipterocarpaceae. The Singapore manual is a first trial, later editions should include other islands in the Malay Archipelago. The possibility is also offered to have tailor-made manuals for specific regions against cost price. Many data have been gathered, especially vegetative characters one can readily observe while standing underneath these enormous trees. In this respect the database will be very useful, because due to the very irregular flowering of the Dipterocarpaceae, flowers and fruits are usually unavailable, and even if they are present, they are found high in the tree.
Tipo: Article / Letter to the editor
Ano: 1996 URL: http://www.repository.naturalis.nl/record/525707
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The Spores of Pyrrosia Mirbel (Polypodiaceae), a sem study Naturalis
Uffelen, G.A. van; Hennipman, E..
The spores of all 51 currently recognized species in the homosporous fern genus Pyrrosia have been studied with the aid of the scanning electron microscope (SEM). In all species a perispore has been found. The wide diversity in sporoderm sculpture as encountered in this genus has been described and five spore types have been recognized, mainly based on perispore characters.
Tipo: Article / Letter to the editor
Ano: 1983 URL: http://www.repository.naturalis.nl/record/535253
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