twig, ornamental evergreen
槙 centers on a type of evergreen tree or its twigs, often referring to the Japanese spindle tree or similar ornamental evergreens. The twig sense is a natural extension of the tree's small branches.
槙 combines 木 (tree) with 真, which likely contributes the sound and may relate to the idea of something true or genuine, but the exact historical development is uncertain.
A tree (木) with a true (真) evergreen nature: 槙 is an ornamental evergreen tree, and its twigs are the small true branches.
For テン, imagine ten (テン) ornamental evergreen trees lined up, each with delicate twigs: ten -> テン.
yew plum pine (Podocarpus macrophyllus)
Chinese juniper (Juniperus chinensis)
Chinese juniper (Juniperus chinensis)
yew plum pine (Podocarpus macrophyllus)
Podocarpus macrophyllus var. maki (variety of yew plum pine)
eastern red cedar (Juniperus virginiana); red cedar; red juniper; pencil cedar; aromatic cedar
Japanese umbrella pine (Sciadopitys verticillata); parasol pine; koyamaki