plant-flower-tropical-04

plant-flower-tropical-04 - pod-shaped, and consists of one...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Flower structure (tropical) 4 Crotalaria Crotalaria retusa . This flower has five fused sepals; five petals (yellow), not all joined but of different shapes and sizes. The uppermost petal is called the ‘standard’, and the two partly joined petals at the side are the ‘wings’. Within the wings are two partly joined petals forming a boat- shaped ‘keel’. Inside the keel are ten stamens, five with rounded anthers and five with elongated anthers. The filaments are fused to form a sheath round the ovary. The ovary is long, narrow and
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: pod-shaped, and consists of one carpel with about ten ovules. The style ends in a stigma, just within the pointed end of the keel. Crotalaria is widely distributed in the tropics. standard sepals keel wing (a) Intact flower (b) One wing removed keel bases of fused filaments form sheath round ovary stigma stamen (c) One side of keel removed stigma style ovary (d) Stamens and filament sheath removed Ovary grows to form pod Pod splits open and scatters seeds D.G. Mackean Crotalaria flower dissected...
View Full Document

Ask a homework question - tutors are online