Three new species of Prosopidastrum (Mimosaceae) from Argentina

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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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Detalles Bibliográficos
Autores principales: Palacios, R.A., Hoc, P.S.
Formato: JOUR
Materias:
Argentina
Mimosaceae
Prosopidastrum
Fabaceae
Prosopidastrum angusticarpum
Prosopidastrum dehiscens
Prosopidastrum globosum
Prosopidastrum gracile
Prosopidastrum mexicanum
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10553177_v11_n1_p79_Palacios
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_10553177_v11_n1_p79_Palacios
record_format dspace
spelling todo:paper_10553177_v11_n1_p79_Palacios2023-10-03T16:00:46Z Three new species of Prosopidastrum (Mimosaceae) from Argentina Palacios, R.A. Hoc, P.S. Argentina Mimosaceae Prosopidastrum Fabaceae Prosopidastrum Prosopidastrum Prosopidastrum angusticarpum Prosopidastrum dehiscens Prosopidastrum globosum Prosopidastrum gracile Prosopidastrum mexicanum Prosopidastrum mexicanum 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. Fil:Hoc, P.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10553177_v11_n1_p79_Palacios
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Mimosaceae
Prosopidastrum
Fabaceae
Prosopidastrum
Prosopidastrum
Prosopidastrum angusticarpum
Prosopidastrum dehiscens
Prosopidastrum globosum
Prosopidastrum gracile
Prosopidastrum mexicanum
Prosopidastrum mexicanum
spellingShingle Argentina
Mimosaceae
Prosopidastrum
Fabaceae
Prosopidastrum
Prosopidastrum
Prosopidastrum angusticarpum
Prosopidastrum dehiscens
Prosopidastrum globosum
Prosopidastrum gracile
Prosopidastrum mexicanum
Prosopidastrum mexicanum
Palacios, R.A.
Hoc, P.S.
Three new species of Prosopidastrum (Mimosaceae) from Argentina
topic_facet Argentina
Mimosaceae
Prosopidastrum
Fabaceae
Prosopidastrum
Prosopidastrum
Prosopidastrum angusticarpum
Prosopidastrum dehiscens
Prosopidastrum globosum
Prosopidastrum gracile
Prosopidastrum mexicanum
Prosopidastrum mexicanum
description 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.
format JOUR
author Palacios, R.A.
Hoc, P.S.
author_facet Palacios, R.A.
Hoc, P.S.
author_sort Palacios, R.A.
title Three new species of Prosopidastrum (Mimosaceae) from Argentina
title_short Three new species of Prosopidastrum (Mimosaceae) from Argentina
title_full Three new species of Prosopidastrum (Mimosaceae) from Argentina
title_fullStr Three new species of Prosopidastrum (Mimosaceae) from Argentina
title_full_unstemmed Three new species of Prosopidastrum (Mimosaceae) from Argentina
title_sort three new species of prosopidastrum (mimosaceae) from argentina
url http://hdl.handle.net/20.500.12110/paper_10553177_v11_n1_p79_Palacios
work_keys_str_mv AT palaciosra threenewspeciesofprosopidastrummimosaceaefromargentina
AT hocps threenewspeciesofprosopidastrummimosaceaefromargentina
_version_ 1807315884316819456

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