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热带亚热带植物学报 2001
LEAF EPIDERMAL STRUCTURE IN10SPECIES OF ANNONACEAE
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Abstract:
Withthe helpof LM and SEM,leafepidermalstructurewas studiedin10speciesof Annonaceae.Epidermalcellsof themarepolygonalandnearlyisodiametricor irregularin outlinewith straight,arched,sinuolate,undulateor sinuateanticlinalwalls.In Fissistigma oldhamii andF.uonicum,theouterpericlinalwallsof abaxialepidermalcellsarepapillate.Drusesor prismaticcrystals arefoundin someepidermalcellsof somespecies.Thestomatain9speciesarerestrictedto abaxial surface,onlystomatainArtabotrys hexapetalus aredistributedon bothadaxialandabaxialsides.The maturestomataof10speciesareparacyticwith2-6subsidiarycells.Contiguousandabortivestomata arealsoobservedin somespecies.Simpleunicellular,uniseriateor biseriatemulticellular,clavateand stellate(tufted)trichomesarepresenton differentsurfacesin9speciesexceptAnnona glabra,the surfacesof whichareglabrous.All charactersof theleafepidermalstructureas mentionedaboveareof significancein the identificationof some taxa at specificor genericlevel,and in probingtheir systematicrelationship.
