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| Maas, P.J.M.; Heusden, E.C.H. van; Koek-Noorman, J.; Setten, A.K. van; Westra, L.Y.Th.. |
| This paper follows upon an earlier paper in the series “Studies in Annonaceae” (Maas et al. 1986). Twelve new species are described, viz. 2 in Duguetia, 1 in Ephedranthus, 5 in Guatteria, 2 in Hornschuchia, 1 in Tetrameranthus, and 1 in Unonopsis. A new combination is made in Enicosanthellum. Some amendments and additions to the revision of Tetrameranthus (Westra 1985), including an updated key, are given. Monocarpia euneura Miq. appears to have priority over M. marginalis (R. Scheffer) James Sincl. Additional collections have been made of the rare species Bocagea longepedunculata Martius, Xylopia crinita R.E. Fries, and Xylopia excellens R.E. Fries. Attention is drawn to several recent collections from Bahia, Brazil, which are perhaps referable to... |
| Tipo: Article / Letter to the editor |
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| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/535258 |
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| Heusden, E.C.H. van. |
| The present paper describes the diversity in floral characters of Annonaceae and their distribution over the family, and discusses their value for classification and generic delimitation. Flower morphology predominated historical classifications of this family since Hooker & Thomson (1855) introduced floral characters to divide the Asiatic genera into a number of tribes. Since then, several taxonomists presented a classification of the Annonaceae using floral characters, which classifications, however, are generally felt as unnatural. A survey of the flower morphology of all genera reveals a reticulate distribution of floral character states. Classification of the genera, as presented in this study, learns that floral characters different from those in... |
| Tipo: Article / Letter to the editor |
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| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/526374 |
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| Berg, C.C.; Heusden, E.C.H. van. |
| The 23 species recognized in Pourouma are listed with their synonyms and distribution. Two new subspecies are described: P. melinonii Benoist subsp. glabrata C.C. Berg & van Heusden and P. tomentosa Miquel subsp. persecta Standley ex C.C. Berg & van Heusden. Ten new combinations are made: P. bicolor Martius subsp. chocoana (Standley) C.C. Berg & van Heusden, P. bicolor subsp. digitata (Trécul) C.C. Berg & van Heusden, P. bicolor subsp. scobina (Benoist) C.C. Berg & van Heusden, P. bicolor subsp. tessmannii (Mildbraed) C.C. Berg & van Heusden, P. guianensis Aublet subsp. venezuelensis (Cuatrecasas) C.C. Berg & van Heusden, P. hirsutipetiolata Mildbraed subsp. hispida (Standley & Cuatrecasas) C.C. Berg & van Heusden, P.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/535281 |
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| Maas, P.J.M.; Heusden, E.C.H. van; Koek-Noorman, J.; Setten, A.K. van; Westra, L.Y.Th.. |
| Several species in neotropical genera are described, viz. 1 in Bocageopsis, 2 in Cremastosperma, 1 in Hornschuchia, 1 in Oxandra, 4 in Pseudoxandra, and 2 in Unonopsis. Cremastosperma anomalum R.E. Fries is transferred to Malmea. Cremastosperma pacificum R.E. Fries is recorded for Panama for the first time. Xylopia ulei Diels, X. neglecta (O. Kuntze) R.E. Fries, and X. intermedia R.E. Fries are brought into synonymy with X. benthamii R.E. Fries, X. parviflora Spruce, and X. sericea A. St.Hil. respectively. The African Xylopia parviflora (A. Rich.) Benth., non Spruce, now has to bear the name X. longipetala De Wild, et T. Durand. |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/535261 |
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