Inflorescences with irregularly growing peduncles are called racemose. Different types of racemes are-
(i) Raceme: The inflorescence is long and irregular and the flowers are borne forward. Such as mustard, palm, mango, neem, radish etc.
(ii) Spike: The panicle is long and irregular and the perianth flower is attached to the panicle. For example – Rajnigandha.
(iii) Spikelets: Spikelets are short and spike-like. It has two dry glumes. This is called zero gloom. Null Glum-1 and Null Glum-2. There are two flowering glumes. Lemma and Palea. The lower of the two floral glumes is called the lemma and the upper is called the palea. The flower is above the palea. For example – paddy, wheat, bhutra, sugarcane, grass etc.
(iv) Capitulum: The inflorescence is stout, swollen and broad to form the inflorescence. The inflorescence has two types of flowers. Ray-floral on the outside and disc-floral on the inside. For example – marigold, sunflower, dahlia, tridhara, cosmos.
(v) Spadix: Spadix short and succulent. The flowers are sessile and unisexual. The inflorescence is covered with one or more large spathe. Such as coconut, kachu, banana, betel nut etc.
(vi) Catkins: Catkins slender, long and elastic. It hangs down from the top of the stem. For example – Muktzhuri.
(vii) Corymb: The pedicels of all the flowers in the inflorescence are equal. So the flowers stay on the same floor. For example – Kalkasunda.
(viii) Umbel: The peduncle is short and the umbel is formed at its apex. For example, coriander, carrot etc.
(ix) Capitate: Inflorescence is short and the pistillate flowers are arranged at the apex so that the entire inflorescence appears round. For example, Lajjavati, Acacia etc.