Definition of "fastigiate" in English

adjective

1. (botany) Erect and parallel.

   • The branches of this species are fastigiate.

2. (botany, horticulture) Having closely-bunched erect parallel branches

   • This is a fastigiate variety.

3. (palynology) Characterized by a fastigium, a cavity separating the intexine from the sexine near the endoaperture of a colporate pollen grain.

   • The grains are 3-colporate and fastigiate.

4. (obsolete) Tapering to a point

noun

1. (horticulture) A tree or shrub with erect, parallel branches.