Three new species of Prosopidastrum (Mimosaceae) from Argentina
The genus Prosopidastrum (Mimosaceae) was described by Burkart on the basis of two species: P. mexicanum (Dressler) Burkart from Mexico with fruits 12 mm wide, dehiscing by two valves dividing into 1-seeded segments, these separating from a persistent replum, with leaflets 4-8 × 2-4 mm, and P. globo...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
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Missouri Botanical Garden
2001
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | The genus Prosopidastrum (Mimosaceae) was described by Burkart on the basis of two species: P. mexicanum (Dressler) Burkart from Mexico with fruits 12 mm wide, dehiscing by two valves dividing into 1-seeded segments, these separating from a persistent replum, with leaflets 4-8 × 2-4 mm, and P. globosum (Gillies ex Hooker f. & Arnott) Burkart from Argentina, which has loments 3-4 mm wide and leaflets 0.5-2 × 0.5-1 mm. Burkart noted the Argentinean P. globosum as polymorphic. Based on fieldwork, analysis of herbarium specimens, and palynological studies, we concluded that three entities new to science must be described: P. dehiscens, P angusticarpum, and P. gracile. The new species are restricted to Argentina and are mostly allopatric, but rarely locally sympatric. Characters of fruit, flowers, pollen, and leaves identify each new species. A key to differentiate all the known species is provided, as well as a key to identify the Argentinean species based on pollen morphology. |
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| Bibliografía: | Burkart, A., La intrincada sinonimia del "maneacaballo", Prosopis globosa Gill (1945) Physis (Buenos Aires), 20, pp. 53-54 Leguminosas nuevas o críticas, VI (1964) Darwiniana, 13 (3-4), pp. 428-448 |
| ISSN: | 10553177 |
| DOI: | 10.2307/3393213 |