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| Berg, C.C.; Kaastra, R.C.. |
| In members of Myosotis ser. Palustres Popov occurring in the Netherlands 3 distinct taxa can be distinguished on the basis of karyological, morphological and ecological studies: 1 M. palustris (L.) L. subsp. palustris, palustris, M. palustris subsp. nemorosa (Besser) C. C. Berg & Kaastra, stat. nov. et comb. nov., and M. laxa Lehmann subsp. cespitosa (C. F. Schultz) Hylander ex Nordhagen. Distribution maps and a key to these taxa are given. The chromosome numbers are: 2n = 22 and 44 (endoploid) for M. palustris subsp. nemorosa; 2n = 64 and 66 for M. palustris subsp. palustris; 2n = 88 for M. laxa subsp. cespitosa; 2n = 55 for a putative hybrid of M. palustris subsp. nemorosa and M. laxa subsp. cespitosa. |
| Tipo: Article / Letter to the editor |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/528151 |
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| Kaastra, R.C.. |
| After several pre-Linnean mentions (see: Bureau 1873), the name Morus tinctoria for plants belonging to the present genus Chlorophora was first validly published by Linnaeus (1753). Later combinations were made under Broussonetia Ventenat by Kunth (1817), under Fusticus Rafinesque by Rafinesque (1838), and under Maclura Nuttall by D. Don ex Steudel (1841). Rafinesque (l.c.) based the genus Sukaminea on Morus tinctoria L., without mentioning any species. Gaudichaud (1830) established the genus Chlorophora, based on Morus tinctoria L. Sp. Pl. 1753. The valid combination Chlorophora tinctoria (L.) was made by Bentham, who added the African Morus excelsa Welwitsch to Chlorophora (Bentham et Hooker 1880). Recently Corner (1962) made the combination Maclura... |
| Tipo: Article / Letter to the editor |
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| Ano: 1972 |
URL: http://www.repository.naturalis.nl/record/534713 |
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| Kaastra, R.C.. |
| During study of American Chlorophotas (Kaastra 1972) Chlorophora brasiliensis (Martius) Standley (= Maclura brasiliensis (Martius) Endlicher) and Chlorophora scandens Standley et Williams seemed not to be closely related to Chlorophora tinctoria (L.) Bentham et Hooker. The taxonomic position of Maclura brasiliensis was already called dubious by Bentham & Hooker (1880) and more recently also by Macbride (1937); the same holds true for Chlorophora scandens (Standley & Williams 1950). Chlorophora brasiliensis and Chl. scandens show much resemblance to some other genera treated by Corner (1962) as sections of Maclura: Maclura Nuttall s.s. (= Maclura pomifera (Rafinesque) Schneider), Cardiogyne Bureau, and Cudrania Trécul. Corner, however, did not... |
| Tipo: Article / Letter to the editor |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/534842 |
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