Abstract

Plants of D. sansibarensis Pax bear opposite or alternate leaves, very rarely both on the same plant. The shoot apex shows distinct histological zonations irrespective of the phyllotactic variation. Three or more buds are produced in almost every axil, starting from the third node. The largest (axillary) bud is nearest the stem and always develops into a lateral branch. The 2–4 accessory buds develop conjunctly into a bulbil. Bulbil growth is traced and allometric relationships are shown to exist between the different parts of the bulbils. Histogenesis and organogenesis in bulbils are explained.

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