mirabilis anomalous thickening

Anomalous Secondary Thickening in Mirabilis / Nyctanthes (Nyctaginaceae)

Mirabilis jalapa (4 O’clock plant) and Nyctanthes  belongs to the family Nyctaginaceae. In the previous post we discussed the anomalous secondary thickening in Amaranthus / Achyranthes (Amaranthaceae). Similar to Amaranthus, the secondary thickening in Mirabilis  and Nyctanthes also occurs due to the formation of accessory cambia formed external to the […]

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Aristolochia stem thickening

Anomalous Secondary Thickening in Amaranthus and Achyranthes Stem

Anomalous secondary thickening in Amaranthus and Achyranthes occurs due to the abnormal activity of an abnormal cambium. Here, new cambial rings are formed from the cortex or pericycle after the older cambium has ceased its functioning. The new cambial strip formed also behaves abnormally. This type of anomalous secondary thickening […]

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