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| Kuijt, Job. |
| A systematized survey of inflorescence structure is presented of Loranthaceae, s.s., on a world-wide basis, starting with New World taxa and continuing with Old World ones. In each case, material is arranged to reflect a presumed evolutionary sequence. This sequence uses as its starting point the solitary sessile flower subtended by a foliage leaf, leading to the evolution of a determinate inflorescence with ebracteolate lateral monads, and eventually to indeterminate inflorescence types successively bearing ebracteolate and bracteolate lateral monads and, in many groups, eventually triads. Various trends in condensation to umbels and capitula have emerged occasionally, as well as other reductional phenomena and other modifications. The unit inflorescence... |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/524884 |
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| Kuijt, Job. |
| Attention is drawn to the unusual distribution of flowers and inflorescences in a number of species, and to certain peculiarities of branching and phyllotaxy. The latter are explained by a heterophylly which so far has escaped notice, involving the formation and early disappearance of a pair of minute intercalary cataphylls. A similar branching pattern and flower distribution is evident in Helicanthes. |
| Tipo: Article / Letter to the editor |
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| Ano: 1980 |
URL: http://www.repository.naturalis.nl/record/525190 |
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| Kuijt, Job. |
| Heterophylly is frequent in Dendrophthora and Phoradendron, and may take many forms. The concepts prophyll, cataphyll, and scale-leaf are briefly discussed and defined as to usage in the Phoradendreae. Various morphological details of patterns of heterophylly, flower orientation and seriation, fusion of prophylls, phyllotaxy, sex distribution and inflorescence position are traced as far as the available material permits. A typology of inflorescences in these two genera is proposed, based on flower seriation. Anatomical observations on a few species of both genera have revealed striking and unsuspected structural differences between the inflorescences of some seemingly related species, but also similarities which cross the intergeneric boundary. The... |
| Tipo: Article / Letter to the editor |
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| Ano: 1959 |
URL: http://www.repository.naturalis.nl/record/535000 |
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| Kuijt, Job. |
| There comes a time in the history of nearly every genus when it becomes almost immoral to add new species without first having surveyed the genus as a whole. Dendrophthora has reached this state. From the time of its first recognition as a separate entity to the present, new species have been described, often on very tenuous grounds, and usually without an indication of infrageneric relationships, until today we are faced with a staggering mass of specific epithets in complete chaos. The genus has not been comprehensively studied for more than half a century, and no balanced attempt has as yet been made to establish natural divisions within. Having become interested in the morphology of this and the related genus Phoradendron (KUIJT, 1959), I was naturally... |
| Tipo: Article / Letter to the editor |
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| Ano: 1961 |
URL: http://www.repository.naturalis.nl/record/535199 |
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