Comparative wood anatomy of eight tree species of Mimosa sect. Batocaulon (Leguminosae) distributed in Mexico and their taxonomic implications
Por:
Adriana Montano-Arias, Susana, Grether, Rosaura, Lucia Camargo-Ricalde, Sara, Hilda Flores-Olvera, Maria
Publicada:
14 ene 2020
Resumen:
The great diversity of the genus Mimosa and the difficulty in the
circumscription of its species and varieties based on morphology have
encouraged the search for characters in other sources of evidence such
as wood anatomy, which provides characters of taxonomic importance. The
main objective of this study was to identify characters with taxonomic
value for Mimosa; we studied the wood anatomy of eight tree species in
Mimosa sect. Batocaulon from Mexico: Mimosa acantholoba, M. bahamensis,
M. benthamii, M. hexandra, M. leucaenoides, M. tejupilcana, M.
tenuiflora, and M. texana belonging to eight series: Acantholobae,
Bahamenses, Distachyae, Bimucronatae, Leucaenoideae, Plurijugae,
Leiocarpae and Boreales, respectively. One stem fragment (80 cm in
length) was collected at 80 cm above soil height, from three plants per
species. Twenty-five measurements were taken per individual for 15
anatomical characters. Three species have ring-porous wood and five
species have diffuse-porous wood; the species differ in colour, figure,
in the prevalence of a certain type of axial parenchyma, in the
tangential diameter of the earlywood vessels, in the number of vessels
connected by confluent-aliform parenchyma, in the number of series of
rays and in the presence or absence of crystal sand in the ray cells.
These characters have taxonomic value at species level, but not at
series level. At the section level, the presence of homocellular rays
distinguished Batocaulon from other sections of the genus. Based on
these results, we produced a wood anatomical identification key to the
eight studied species.
Filiaciones:
Adriana Montano-Arias, Susana:
Colegio Postgrad, Programa Bot, Km 36-5 Carretera Mexico Texcoco, Texcoco 56230, Estado De Mexic, Mexico
Univ Autonoma Metropolitana Iztapalapa, Dept Biol, Div Ciencias Biol & Salud, Apdo Postal 55-535, Ciudad De Mexico 09340, Mexico
Grether, Rosaura:
Univ Autonoma Metropolitana Iztapalapa, Dept Biol, Div Ciencias Biol & Salud, Apdo Postal 55-535, Ciudad De Mexico 09340, Mexico
Lucia Camargo-Ricalde, Sara:
Univ Autonoma Metropolitana Iztapalapa, Dept Biol, Div Ciencias Biol & Salud, Apdo Postal 55-535, Ciudad De Mexico 09340, Mexico
Hilda Flores-Olvera, Maria:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Apdo Postal 70-233, Mexico City 04510, DF, Mexico
Colegio de Postgraduados, Programa de Botánica. km, 36.5 Carretera México-Texcoco, Montecillo, Texcoco, Estado de México C.P. 56230, Mexico
Departamento de Biología, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Apdo. Postal 55-535, Ciudad de México, 09340, Mexico
Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, Apdo. Postal 70-233, Ciudad de México, 04510, Mexico
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