In Cycas whorls of scales alternate with large pinnate leaves.
There are con siderable irregularities, how ever, in this respect, and the number of leaves in different whorls is not always uniform, as may be seen in Lysimachia
2) the upper whorls are capitate, the lower filiform.
Apart from this, botanists are generally agreed that the concrescence of parts of the flower-whorls - in the gynaeceum as the seed-covering, and in the corolla as the seat of attraction, more than in the androecium and the calyx - is an indication of advance, as is also the concrescence that gives the condition of epigyny.
From the nodes spring whorls of similar but more slender branches.