Symbol   Definition
AC = air chamber
Ap = apical meristem
Ax = axillary bud
BSh = border sheath
C = cortex
Ca = casparian strip
Cb = cambium
Cbz = cambial zone
CC = companion cell
Ch = chlorenchyma
Cl = chloropast
Co = chollenchyma
CPP = crushed protophloem
CPr = cortical parenchyma
Cu = cuticle
El = zone of elongation
En = endodermis
Ep = epidermis
Ex = exodermis
F = fibre
GH = glandular hair
Gr = ground meristem
H = hair
IAS = intercellular air space
ICb = interfascicular cambium
IL = immature leaf
LEp = lower epidermis
LP = leaf primordium
M = medulla
Me = mesophyll
SMe = spongy mesophyll
ML = mature leaf
Mo = motor cell
Ms = mestome sheath
Mx = metaxylem
Mxv = metaxylem vessel
P = parenchymatous pith
Pa = passage cell (endodermis)
Pd = protoderm
Pe = pericycle
Ph = phloem
Ph1 = primary phloem
Ph2 = secondary phloem
Phf = phloem fibre
PhR = phloem ray
Pl = palisade mesophyll
Pr = parenchyma
PS = parenchyma sheath
Pv = provascular meristem
Px = protoxylem
PxLa = protoxylem lacuna
PxP = protoxylem parenchyma
Pxv = protoxylem vessel
R = ray
Rc = root cap
Rh = root hair
S = stele
Sc = sclereid
Sh = sheath
Sl, Scl = sclerenchyma
Sme = spongy mesophyll
Sp = simple pit
SpW = spring wood
St = stomata
St.c. = stomatal cavity
st.g. = starch grain
Svet = sieve tube
SW = summer wood
T = tracheid
UEp = Upper epidermis
V = vessel
VB = vascular bundle
Wf = wood fibre
Xy = xylem
Xy1 = primary xylem
Xy2 = secondary xylem
Xy2sw = secondary xylem summer wood
XyR = xylem ray
Xy2SpW = secondary xylem spring wood