adjective
(botany) Erect and parallel.
(botany, horticulture) Having closely-bunched erect parallel branches
(palynology) Characterized by a fastigium, a cavity separating the intexine from the sexine near the endoaperture of a colporate pollen grain.
(obsolete) Tapering to a point
noun
(horticulture) A tree or shrub with erect, parallel branches.