school culture and the introduction of plant varieties

摘要

A cellular tray for receiving a plurality of rows of flower plants or the like for cultivating or displaying them comprises alternate frustoconical cavities for receiving said plants in pots or the like and frustoconical holes constituting respective ventilating shafts for aerating the undersides of the leaves of the plants received therein, each hole being disposed at the center of a circle, along which the axes of four pot-receiving cavities are disposed with a 90 DEG spacing, each cavity having its minor base opening at the bottom face of the tray and its major base opening at the top face of the tray. The holes have opposite tapers and comprise at their upper end a collar projecting from the top face of the tray. This tray further comprises a projecting marginal portion. Grooves formed in the lateral walls of the cavities facilitate the draining of water through the cavities alone.