Explain different types of Racemos inflorescences.

Explanation

Racemose Inflorescences are of several types. They are :
1) Simple Raceme : The pedunde is simple, unbranched producing many pedicellate, bracted flowers in Acropetal Manner. Ex : Crotalaria.
2) Corymb : The peduncle is long, and bears many flowers in Acropetal manner. but all the flowers are brought to the same level due to varied lengths of pedicels even through they are borne at different nodes. Ex : Cassia, Cauliflower.
3) Umbel : The flower appear to have arisen from the same point of the peduncle and is called umbel type. The Inflorescence is covered by a whorl of bracts called ..Involucre... Ex : Apiaceae, carrot.
4) Spike : The peduncle is long and bears many sessile flowers, arranged in Aeropetal Manner.
Ex : Achyranthus, poaceae.
5) Spadix : In some plants, penduncle bears sessile unisexual and neutral flowers arranged in acropetal manner, covered and protected by modified Bract called spathe. Ex : Cocos, colocasia.
6) Head : In some plants, unisexual and bisexual sessile flowers develop centripetially on a condensed peduncle.
Ex : Tridax, sunflower.