Fastigiate
Fastigiate , adjective
[Latin fastigium gable end, top, height, summit.]
1.
Narrowing towards the top.
2.
(Botany) Clustered, parallel, and upright, as the branches of the Lombardy poplar; pointed.
3.
(Zoology) United into a conical bundle, or into a bundle with an enlarged head, like a sheaf of wheat.
Also: Fastigiated