trimerous


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Related to trimerous: tetramerous

trimerous

(trĭm′ər-əs)
adj.
1. Having three similar segments or parts.
2. Botany Having flower parts, such as petals, sepals, and stamens, in sets of three.

trim′er·y n.
References in periodicals archive ?
In all four genera of Dasypogonaceae, flowers are trimerous and pentacyclic, with six tepals in two alternating whorls, six stamens in two alternating whorls and a central gynoecium that is normally composed of three fused carpels located in the same floral sectors as the outer stamens and outer tepals.
Consequently, a typical cyperoid flower is tetracyclic with two alternating whorls of three perianth members, one whorl of three stamens opposite the outer perianth parts, and a trimerous gynoecium (e.
Cyperoid flowers are typical trimerous monocot flowers.
They all have hermaphrodite, trimerous flowers, with each subtended by a papery glume.
The question of paired staminodes is contradicted by a review study by Eklund (2000) of fossil Lauraceae flowe rs which demonstrates a basic and constant pattern of four trimerous stamen whorls, the innermost being staminodial and with only the third bearing paired glandular appendages.
Burger (1977) hypothesized that trimerous flowers (as in monocots) are derived from a fusing of three subunits, each of which resembles a chloranthoid flo wer.