1. LEAF MORPHOLOGY

2. Monocotyledonous leaf
leaf sheath
Dicotyledonous leaf
Monocotyledonous leaf
leaf apex
leaf margin
blade/lamina
leaf vein
petiole
stipule
ligule
auricle
abscission zone
midrib
lamina

3. PETIOLE cylindrical grooved phyllode winged petiole swollen leaf base
pulvinus
swollen leaf base
pseudobulb
winged petiole
phyllode
PETIOLE

4. PHYLLODES

5. SESSILE LEAVES (without petiole)
connate
perfoliate
auriculate

6. SESSILE LEAVES

7. LEAF VENATION DICOT reticulate/ netted MONOCOT pinnately netted
palmately netted
parallel
penni parallel
DICOT
reticulate/ netted
MONOCOT
LEAF VENATION

8. SIMPLE LEAVES
palmately lobed
pinnately lobed

9. PALMATE LEAVES trifoliate multifoliate bifoliate simple leaf leaflet
petiolule
petiole
multifoliate
bifoliate
simple leaf
(palmately - lobed)
e.g. ubi gajah

10. PINNATE LEAVES leaflet petiolule petiole odd pinnate/imparipinnate
bipinnate
tripinnate
petiolule
even pinnate/paripinnate
rachis
rachilla
leaflet
petiole
PINNATE LEAVES

11. Palmate (multifoliate)
Odd pinnate
Palmate (multifoliate)

12. LEAF ARRANGEMENT (PHYLLOTAXY)
alternate
spiral
opposite
whorled

13. opposite
whorled

14. alternate
spiral

16. interpetiolar stipule

17. LEAF SHAPES spathulate oblong lanceolate elliptic ovate obovate
cordate
acicular
linear
reniform

18. LEAF SHAPES peltate orbiculate oblanceolate rhombic obcordate
obdeltoid
deltoid
cuneate
hastate
sagittate
LEAF SHAPES

19. LEAF MARGINS entire undulate (sinuate) incised retrorse crenate
crenulate
serrate
denticulate
serrulate
dentate

20. LEAF APICES A B C acuminate acute apiculate aristate caudate cirrhose
obcordate
mucronulate
mucronate
emarginate
cuspidate
cleft
obtuse
retuse
rounded
spinose
truncate A B C
A = CURLED, FLEXOUS
B = STIFF, STRAIGHT
C = NOTCHED

21. LEAF BASES cuneate attenuate auriculate cordate sagittate
unequal (oblique)
rounded
hastate
truncate
obtuse