|
|
|
|
|
| Hogeweg, P.; Koek-Noorman, J.. |
| In this paper we investigate the pattern of wood anatomical variation in some groups of Rubiaceae (i.e. Cinchoneae, Rondeletieae and Condamineae) by using a numerical pattern detection method which involves character weighing (Hogeweg 1975). In this method character weights are obtained iteratively on the basis of the distribution of character values in previously generated classes; these classes being generated by agglomerative cluster analysis, initially with characters weighed equally and subsequently with characters weighed differentially as indicated above. The result of such a study consists of a sequence of dendrograms together with the character weights by which these are produced. Our biological conclusions include: The so obtained results confirm... |
| Tipo: Article / Letter to the editor |
|
| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/534910 |
| |
|
|
| Koek-Noorman, J.; Hogeweg, P.; Maanen, W.H.M. van; Welle, B.J.H. ter. |
| The present paper deals with the wood anatomy of the Blakeeae (Melastomataceae). Generic descriptions of the secondary xylem of Blakea, Topobea, and Huilaea are given and compared with data on 16 genera of the Miconieae. Numerical pattern detection was undertaken. The results confirm our preliminary ideas that Blakea and Topobea do not differ enough to enable the separation of these genera on the basis of their wood anatomy. Within the Miconieae it is not possible to separate the genera. However, some anatomical differences between the two tribes were found. The genus Huilaea seems to belong in the Blakeeae although it also shows similarities with the Miconieae. Wurdack’s suggestion (pers. comm.) that the Blakeeae are closest to the genera Loreya and... |
| Tipo: Article / Letter to the editor |
|
| Ano: 1979 |
URL: http://www.repository.naturalis.nl/record/534790 |
| |
|
|
|
