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In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen. [ 1 ] [ page needed ] Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla.
Stamen is the Latin word meaning "thread" (originally thread of the warp, in weaving). [8]Filament derives from classical Latin filum, meaning "thread" [8]; Anther derives from French anthère, [9] from classical Latin anthera, meaning "medicine extracted from the flower" [10] [11] in turn from Ancient Greek ἀνθηρά (anthērá), [9] [11] feminine of ἀνθηρός (anthērós) meaning ...
The petals are white with 3 lobes, the middle lobe erect, the ligules densely hairy, and there is a single three-lobed staminode between each pair of stamens. Flowering occurs from August to December and the fruit is a spherical capsule 20–30 mm (0.79–1.18 in) in diameter and densely bristly.
[C(5) A5] – corolla fused from 5 petals, fused to stamens; Prenner et al. propose superscript zero for a lost organ, and superscript "r" for a reduced one. Ronse De Craene uses a degree symbol to mark a staminode (infertile stamen) or pistillode (infertile carpel).
The petals are in two threefold circles, with mostly two petals of the outer circle are completely fused. The labellum forms a sac-like structure. The ovary is under constant and one-chambered or three-chambered. Two fertile stamens, a staminode and style are fused into a complex structure.
The flowers have five white or cream-coloured, hairy, petal-like sepals and five hairy white petals with a hairy, narrow ligule about the same length as the sepals. There is a single white staminode between each pair of stamens.
Introrse – opening on the inside of the corolla, the stamens are contained within the margins of the petals. Monodelphous – stamen filaments united as a tube. Poricidal – anthers opening through terminal pores. Staminode – a sterile stamen. Staminodial – (1) concerning a sterile stamen; (2) flowers with sterile stamens.
The flowers are 5 mm (0.20 in) wide with five yellow, petal-like sepals, five yellow petals with a narrow, white ligule, and a single, yellow staminode between each pair of stamens. Flowering occurs from May to November and the fruit is a woody, elliptic capsule 4–5 mm (0.16–0.20 in) in diameter. [2]