As twilight sets on the Piss Palm stands of old, the beaches of Dingus are met with the other variety of dominant endemic flora, not of piss but of pisscake. Towering somewhat over the groves of Palm Canartree which it shares a niche, the Tiertrunk Nolm has become a frequent sight on the irradiated shorelines.

Developing into a tree-like form independently from the closely-related Nomboo, the Tiertrunk Nolm is a bit aptly-named: as a sapling, it resembles its Nomherb ancestry quite closely - save for the fact that it can grow much taller. As the young tiertrunk ascends, a new ring of leaves develops and radiates from its center. At this time, older rings start to kill off their cells and truncate closer to the stem, turning from tender cerulean to a dry, bark-like slate-taupe. To protect against radiation, this old lignin is reinforced with considerable proportions of lead. Marine salt is often blown into tiertrunk stands as seaspray; said salt is excreted via specialized shallow roots to maintain osmoregulation.

Like other nomherbs, Tiertrunk Nolm gametes are sent into the wind via high-set sporophores, which then conjugate to form airborne spores. Occasionally, winds may blow spores into the neighboring warm ocean. This flora is not yet adapted for life in the ocean, and so spores ending up there will likely become unviable and end up eaten.

The Tiertrunk Nolm is more specialized for beach life than the Palm Canartree, thus can be found closer to the ocean. Conversely, the towering Nomboo restricts tiertrunks from breaching deep into the Dingus Jungle, where Palm Canartrees have the advantage.