From 2speccers2tools wiki

With the extinction of the pisstrees, a vacuum was left in the ecologies of Dingus for a tall tree-like flora - a vacuum the canarflora and nomflora are poised to fill. With the ample rain and pleasantly warm temperatures provided in the Dingus Jungle, it’s well-predicted that whatever does evolve into a tree here will get big - such is the case of the Nomboo, dominating the jungle with tall groves of cyan.

The Nomboo grows in repeating patterns - starting with a shoot emerging from the ground topped with a ring of polyfoliate leaves. As this shoot ascends to a certain height, the leaves radiate outwards and a new stem begins to grow from their center with a new developing ring of leaves at its apex. Thanks to this efficient mode of growth, it can easily ascend to heights as tall as 20 meters, marking a definite place in the canopy. Whatever light that isn’t absorbed by the upper rings of leaves will eventually make way to the deeper leaves, which are darker and wider; it’s due to this that the understory of the Dingus Jungle knows perpetual shadow for the first time.

Nomboo trunks are somewhat hollow, yet still reinforced with sturdy lignin, which not only maintains their strength, but also ensures that Nomboo stands require less resources than flora of similar stature. This means that this flora not only grows tall, but fast, and can survive on less. Stands without lead tend to grow faster than those which do.

Originating as a radiation-induced mutation, sporophores now grow under each ring of leaves instead of on the Nomboo’s apex. Gametes are still carried by the wind to a recipient sporophore, which conjugate to form a seed-like spore.