For each species, there are serial sub sections enumerated and described: form, bark, twigs, pith, buds, leaves, fall leaf color, stipules , leaf scars, flowers, fruit, seeds, wood, and current champion.
The genus Acacia is mostly confined to Africa where almost all have stipular spines or recurved thorns.
A terminal bud was defined as the stage when the stipules of the foliage leaves covered the shoot apex and the youngest foliage leaf was offset from the central axis of the shoot apex.
The colleter, an epidermal secretory structure, can be found mainly on the adaxial side of stipules and/or sepals among 60 families of the angiosperms.
Since ‘spines’ are modified leaf stipules, they are referred to as stipular spines.
Accumulation of CKs in shoot tissues known for high transpiration, such as guard cells and the mesophyll cells below them, trichomes, hydathodes, stipules , and stigma filaments appears to be reasonable.
Morphological characters include leaves that are not gland-dotted, persistent intrapetiolar stipules , some apetalous species, and a reduction in stamen number in several species.
First of all the group of stipular cells mentioned above is converted into cambial feature.
Unemerged axillary bud: a bud still completely enclosed by the stipular sheath of its subtending leaf.
Scars of early-falling-off stipular sheaths ring the stems of magnolias, Yellow-poplars and Sycamores.