LEAF MORPHOLOGY
leaf sheath
Dicotyledonous leaf Monocotyledonous leaf
leaf apex
leaf margin
blade/lamina
leaf vein
petiole
stipule
ligule
auricle
abscission zone
midrib
lamina
cylindrical grooved
pulvinus
swollen leaf base
pseudobulb
winged petiole
phyllode
phyllode
PETIOLE
PHYLLODES
auriculate
perfoliateconnate
SESSILE LEAVES (without petiole)
SESSILE LEAVES
pinnately netted
palmately netted
parallel
penni parallel
DICOT
reticulate/ netted
MONOCOT
LEAF VENATION
SIMPLE LEAVES
palmately lobed pinnately lobed
multifoliate
leaflet
petiolule
petiole
bifoliate
trifoliate
simple leaf(palmately - lobed)e.g. ubi gajah
PALMATE LEAVES
odd pinnate/imparipinnate
bipinnate
tripinnate
petiolule
even pinnate/paripinnate
rachis
rachilla
leaflet
rachis
petiole
PINNATE LEAVES
Odd pinnate
Palmate (multifoliate)
alternate
spiral
opposite
whorled
LEAF ARRANGEMENT (PHYLLOTAXY)
opposite
whorled
spiralalternate
interpetiolar stipule
spathulate
LEAF SHAPES
oblong lanceolate elliptic ovate obovate
cordateacicularlinearreniform
peltate orbiculate oblanceolate rhombicobcordate
obdeltoiddeltoidcuneate
hastatesagittate
LEAF SHAPES
entireundulate (sinuate) incised retrorse crenate
denticulatedentateserrulateserratecrenulate
LEAF MARGINS
LEAF APICES
acuminate acute apiculate aristate caudate cirrhose
obcordatemucronulatemucronateemarginatecuspidatecleft
obtuse retuse rounded spinose truncate
A AB
C B B C
C
A = CURLED, FLEXOUS B = STIFF, STRAIGHT C = NOTCHED
C
LEAF BASES
attenuate cuneateauriculate cordate sagittate
obtusetruncateroundedunequal (oblique)
hastate
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