The word is spelled dendritic, just as you spelled it. The word means relating to or resembling a dendrite.
It is Dendritic
Dendritic
i'm not sure. I think it's a dendritic pattern
The expansion of dendritic connections.
Dendritic pattern
The st. Lawrence river is dendritic drainage.
Most Indo-Gangetic Rivers have dendritic (tree-like) drainage pattern.
I don't know about 'treillis' rivers, but the Loire river seems to me to be dendritic (in the sense of arborescent)
The dendritic pattern develops where the river channel follows the slope of the terrain. The stream with its tributaries resembles the braches of a tree , thus the name dendritic. It also flows underneath a rock that is the same hardness.
dendritic cell
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I would say Trellis because it doesn't look dendritic, but I can't be sure.