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- Cyathium abstract "A cyathium (plural: cyathia) is one of the specialised pseudanthia ("false flowers") forming the inflorescence of plants in the genus Euphorbia (Euphorbiaceae). A cyathium consists of: Five (rarely four) bracteoles. These are small, united bracts, which form a cup-like involucre. Their upper tips are free and in the beginning cover the opening of the involucre (like the shutter of a camera). These alternate with: Five (1 to 10) nectar glands, which are sometimes fused. One extremely reduced female flower standing in the centre at the base of the involucre, consisting of an ovary on a short stem with pistil, and surrounded by: Five groups (one group at the base of each bracteole) of extremely reduced male flowers, which each consist of a single anther on a stem.The flower-like characteristics of the cyathia are underlined by brightly coloured nectar glands and often by petal-like appendages to the nectar glands, or brightly coloured, petal-like bracts positioned under the cyathia. The paired petal-like bracts of Euphorbia section Goniostema are called cyathophylls. here female to male flower ratio is 1:αThe cyathia are sometimes solitary, but are usually in cymes, inflorescences of the second order, in pseudumbels, on dichotomously branched stalks or in so-called simple cymes which consist of one central and two lateral cyathia.In one group of Madagascan species in the sub-family Euphorbia section Goniostema (E. aueoviridiflora, E. capmanambatoensis, E. iharanae, E. leuconeura, E. neohumbertii, E. viguieri) there is a tendency for a further pseudanthium to grow from the cyme. Probably as an adaptation to pollination by birds, the cyathia have become specialised: Most cyathia have upright cyathophylles which surround them protectively, but render the nectar glands inaccessible. To compensate, between them are naked sterile cyathia whose only job is to produce nectar.".
- Cyathium thumbnail Cyathium_cross2_ies_no_letters.jpg?width=300.
- Cyathium wikiPageID "7675064".
- Cyathium wikiPageRevisionID "575085117".
- Cyathium hasPhotoCollection Cyathium.
- Cyathium subject Category:Euphorbia.
- Cyathium subject Category:Plant_morphology.
- Cyathium comment "A cyathium (plural: cyathia) is one of the specialised pseudanthia ("false flowers") forming the inflorescence of plants in the genus Euphorbia (Euphorbiaceae). A cyathium consists of: Five (rarely four) bracteoles. These are small, united bracts, which form a cup-like involucre. Their upper tips are free and in the beginning cover the opening of the involucre (like the shutter of a camera). These alternate with: Five (1 to 10) nectar glands, which are sometimes fused.".
- Cyathium label "Ciato".
- Cyathium label "Ciazio".
- Cyathium label "Cyathe".
- Cyathium label "Cyathium".
- Cyathium label "Cyathium".
- Cyathium label "Cyathium".
- Cyathium label "Cyjacjum".
- Cyathium sameAs Cyathium.
- Cyathium sameAs Ciato.
- Cyathium sameAs Cyathe.
- Cyathium sameAs Ciazio.
- Cyathium sameAs Cyathium.
- Cyathium sameAs Cyjacjum.
- Cyathium sameAs m.0268jx9.
- Cyathium sameAs Q148436.
- Cyathium sameAs Q148436.
- Cyathium wasDerivedFrom Cyathium?oldid=575085117.
- Cyathium depiction Cyathium_cross2_ies_no_letters.jpg.
- Cyathium isPrimaryTopicOf Cyathium.