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In contrast to LEAFY, genes like terminal flower (TFL) support the activity of an inhibitor that prevents flowers from growing on the inflorescence apex (flower primordium initiation), maintaining inflorescence meristem identity. [15] Both types of genes help shape flower development in accordance with the ABC model of flower development ...
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Terminalia is a genus of large trees of the flowering plant family Combretaceae, comprising nearly 300 species distributed in tropical regions of the world. [2] The genus name derives from the Latin word terminus, referring to the fact that the leaves appear at the very tips of the shoots.
[citation needed] The dull white to yellow flowers are monoecious, and have a strong, unpleasant odour. They are borne in terminal spikes or short panicles. The fruit is drupe-like, smooth ellipsoid to ovoid, 2–4.5 cm (0.79–1.77 in) long and 1.2–2.5 cm (0.47–0.98 in) broad, blackish, with five longitudinal ridges. [4]
The trees are monoecious, with distinct small male and female flowers on the same tree. Both are produced on axillary or terminal spikes, they are 1 cm (3 ⁄ 8 in) in diameter, white to greenish, and inconspicuous with no petals. [8] Pollen grains measure about 30 microns. [citation needed]
Diagrams are usually depicted with the subtending bract below and the axis above the flower itself, both in the median line. The axis corresponds to the position of the main stem relative to a lateral flower. [10]: 12 When a terminal flower is depicted, the axis is not present and therefore cannot be shown.
The type species, Oreocallis grandiflora, is a plant with terminal showy red, pink, yellow or whitish inflorescences found in mountainous areas in Peru and southern Ecuador. It was originally described by French naturalist Jean-Baptiste Lamarck in 1786 as Embothrium grandiflora .
A foxglove showing a peloric flower at the apex and normal zygomorphic flowers below A normal foxglove plant. It is notable in foxgloves that the terminal flower more frequently develops peloric features than lateral flowers and this has had been put down to terminal buds having a greater supply of sap. [8]