Garden cosmos bud,light micrograph

Numéro d’image : 11675928
Garden cosmos bud,light micrograph
Garden cosmos flower bud. Light micrograph of a section through a flower bud from a garden cosmos (Cosmos bipinnatus) plant. The bottom triangular tissue of the flower stem is a circular receptacle made up of parenchyma cells (light blue) with veins (dark-blue). The flower head is enclosed by an outer involucre of 8 bracts. The top of the receptacle is covered by masses of small flowers (florets),with bracts around them,the capitulum. Each floret has a bract at the base and a flask-shaped ovary (blue),inside which is the ovule (purple). At the top of the ovary is the long tubular corolla (blue) made up of five toothed-petals. The stamens spring from the corolla tube and the five anthers are fused together at the top of the corolla. Each anther has
Licence : Droits gérés
Crédit: Science Photo Library / Wheeler, Dr. Keith
Taille de l’image : 5071 px × 3803 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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