Diversity of Nodal Structure in Mallotus nudiflorus (L.) Kulju & Welzen (Euphorbiaceae) — insight into the evolution of “Howard's Split-Lateral”
[摘要] In1970,Howardproposedafifthtypeofnodalanatomypattern,whereasinglevasculartracefromthesteleisassociatedwithmorethanoneleafandtermeditas“split-lateral”.Severalworkersobservedthistypeofnodalvasculartraceindifferentangiospermfamilies,butwithratherconflictinginterpretations.Thepresentstudyaddedanotherfamily—Euphorbiaceae—inthelistofsuchnodaltypeand,basedontheobservationofdifferentnodalconfigurationsofthespeciesMallotusnudiflorus(L.)Kuljuamp;Welzen(basionymTrewianudifloraL.),theevolutionaryconsequencesof“split-lateral”werediscussed.
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[效力级别] [学科分类] 植物学
[关键词] Nodal anatomy;“split-lateral”;evolution;Euphorbiaceae;Anatomie nodale;“latéralement divisé”;évolution;Euphorbiaceae [时效性]
