LEAF MAJOR TERMS

3.  The main organ of
photosynthesis and
transpiration in higher
plants.
 Leaves are collectively
referred to as foliage, as
in "autumn foliage"

4. There are three main parts
of leaf;
Leaf Base(Hypopodium)
Petiole (Mesopodium)
Lamina or Leaf blade
(Epipodium)

5.  FOLIAGELEAVES
They are
ordinary green
leaves which
perform the
function of
photosysthesis
and respiration
COTYLEDONARY LEAVES
They are present in
seeds serve the purpose of
storage of food and act as
first photosynthetic leaves of
plant

6. RamalLEAVES
Those leaves
which are use
to develop
directly on
branches
e.g Hibiscus

7. Cauline LEAVES
Those leaves
which are use
to develop
directly on
main stem
e.g Coccus

8. REDICALLEAVES
Those leaves
which are use
to develop on
roots
undergroundly
e.g Ellium

9. sCALe LEAVES
These are
small
underground
leaves usually
sessile and
rarely green

10. bracts leaves
The leaves of
flowering
shoots are
known as
bracts
some flowers
bear small
bracts on their
stalks are
known as
Bracteole

11. Floral leaves
These are
specialized
leaves
arranged on
shoot axis,the
thalamus in
circle or whorls
they are
termed as
sepal and
petals.

12.  PERSISTENTleaves
Leaves of
such plants are
found in all
season and do
not (fall) shed
combindly. eg.
Pinus,

13. The small
green lateral
appendages
present on
either side of
leaf base

14. Leaves having
stipules
Stipulateleaves

15. exStipulateleaves
Leaves having
no stipules

16. CODUCOUS
Those types of
stipules which
are used to
fall of as soon
as the leaf
start to unfold
or open
eg Opuntia

17. Decidous stipule
Those types of
stipules which
are used to
fall of after
the leaf unfold
completely
eg Mulbery

18. persistentstipule
Those types of
stipules which
are use to
remains as long
as leaf
remain,do not
fall off before
the leaves fall
eg Rose

19. Adenate stipule
Type of stipule
which remains
attached to
petiole
eg Rose

20. SpinouS stipule
Type of stipule
which modify
into sharp
spinous stipule
eg Zizipus

21. Tendrilar stipule
Type of stipule
which develops
spirally coiled
structure
eg Zizipus

22. Foliar stipule
Type of stipule
which modifies
into leaves like
structure
eg pea

23. Scalystipule
Type of stipule
which are small
membranous
eg Peepal

24. Ochreatestipule
Type of stipule
which form a
hallow tube
encircling the
stem from the
node upto a
certain height
of internodes
eg Polygonium

25. Ligulestipule
These are
membranous or
hairy
structures
occuring at the
junction of the
leaf blade

26. Simpleleaf
The leaf lamina
is either lobbed
or unlobed
a simple leaf is
one in which the
lamina is all in
one piece

27. simpleleaf types
simple leaf with
lobed leaf lamina
in which lobes
are arranged in
pinnate manner
1.lobed

28. simpleleaf types
simple leaf with
unlobed leaf
lamina
simpleleaf types
2,unlobed

29. simpleleaf types
simple leaf with
lobed leaf lamina
in which lobes
are arranged in
palmate manner
3,palmate lobed

30. compoundleaf
In this type of
leaf the leaf
lamina is
dissected into
small pieces upto
midrib

31. PINNATELLYcompoundleaf
In this compound
leaves all the
leaflets are
arranged on
compound on a
common axis
called RACHIS

32. PALMATELYcompoundleaf
In this compound
leaves all the
leaflets are
attached to the
tip of petiole is
called palmate
compound leaf

33. truncATE
leaf having
square or
abruptly base
cordate
leaf having
heart-shaped
base

34. CUNEATE
leaf having
wedge-shaped
base
obtuse
leaf having
rounded base

35. oblique
leaf having
asymmetrical or
unequal sided
auriculate
leaf lamina
extends on lower
side forming two
lobes at base

36. sagitate
leaf having
extended leaf
lamina lobes are
triangular in
shape
hastate
leaf having
pointed and
highly elongated
leaf base

37. LINEAR
Type of leaves
which are long
and narrow with
more or less
parallel margins
and sides
Eg Grass

38. OVATE
Type of leaves
which are an egg
liked structures
having broader
end 0f the leaf
nearest the
petiole
e.g China Rose

39. round
These are
broadly rounded
at the apex and
base
e.g lotus

40. cordate
These are heart
shaped leaves in
this stem
remains attached
at the wide end
of leaf
e.g Betal nuts

41. abcordate
These are heart
shaped leaves in
this stem is
attached at the
narrow end of
leaf

42. elliptical
These are about
twice as long as
broad the
broadest part is
in the middle and
the two end
narrow equally
e.g Guava

43. lanceolate
These are longer
than wide and
widdest below
the middle
gradually
tapering towards
the apex
e.g Bamboo

44. Oblong
These are
almost resemble
a rectangular
except that their
corners are
rounded these
are at least
twice as long as
they are wide
e.g Banana

45. Needle_like
These are just
needle like leaves

46. Cuneate
These are
wedge-shaped
leaf having the
acute angle at
the base

47. lyrate
Leaves having
large upper
lamina with some
smaller lobes

48. reniform
these are
circular or
roughly circular
shaped with a
notch these are
kidney shaped
leaves

49. orbicular
These are
circular or
rounded in shape
the overall shape
of the leaf is
rounded

50. hastATE
These are
speared head
with flaring
pointed lobes at
the base

51. sagitate
These are
arrowshaped
leaves having
narrow pointed
leaf base

52. Falcate
These are
curved like a
sickle shaped
eg Euclaptus

53. subulate
These are
somewhat slender
and tapering to a
point

54. dentate
A leaf having a
toothed margin

55. ENTIRE
A leaf having
smooth
continuous
margins
eg
dentate
A leaf having
large teethed
like margins

56. serrate
A leaf having
margins with cuts
directed upward
incised
A leaf having
margins with
irregular cuts
deep and sharp

57. crenate
A leaf having
broad and round
margins with
blunt projection
serrulate
A leaf having a
minute serrate margins
with very minute saw
like teeth as in a leaf
let of rose

58. undulate
A leaf having
wavy curling from
the front to the
back of the leaf
sinnuate
Deeply wavy margin
towards the middle of
the leaf

59. ACUTE
A leaf having a
sharp apex
ending in a point
obtuse
leaf having blunt and
rounded apex

60. acuminate
A leaf having a
long and pointed
apex
cuspinate
leaf apex ending in
a sharp spiny point

61. Emarginate
A leaf having
notched like apex
mucronate
leaf apex abruptly
terminated by a shape
spiny point

62. Retuse
A leaf having
rounded or
obtuse with a
centrally shallow
truncate
leaf appearing to
terminate abruptly as if
by cutting off

63. caudate
An attenuate
apex with a
slendor tail like
appendages at
the tip
cleft
Apex divided into
rounded or straight
marginal lobes cutoff

64. BATCH 2K17
INSTITUTE OF PLANT SCIENCES
UNIVERSITY OF SINDH