Hydrilla bud. Light micrograph of a longitudinal section through an axillary bud on a Hydrilla plant, showing its internal structure. Hydrilla is a genus of aquatic plant native to the warmer parts of Asia and adapted to life in submerged freshwater environments. Seen here is a bud, an undeveloped embryonic shoot, with the apical meristem, or growing tip, at centre right (red). This is undifferentiated meristemic tissue, which lays down a growing root or shoot behind itself, pushing itself forward. Behind this (to the left) are leaf primordia (young leaves), which have recently formed.
Model release not required. Property release not required.