Saunf), Coriander (Coriandrum sativum, vern. Compound umbel is characteristic of family umbelliferae e.g., Carrot (Daucos carota), Fennel (Foenlculum vulgare, vern. Similar whorls of bracts found at the bases of umbellule’s are called involucels. A whorl of bracts, called involucre, is present at the base of the parent umbel. Several small or daughter umbels called umbellules arise from a common point in an umbellate fashion. Gobhi), the flowers remain undeveloped.ģ. Compound Corymb (Corymb of Corymbs), e.g., Pyrus, Cauliflower, Candytuft. Panicle (Raceme of Racemes or Compound Raceme), e.g., Gold Mohur (Delonix), Cassia fistula, Asphodelus, Yucca, Neem (Azadirachta indica).Ģ. It is an indefinite or indeterminate inflorescence in which the peduncle is branched in a racemose fashion with each branch bearing flowers in acropetal or centripetal fashion.ġ. In Sunflower, the central disc florets are bisexual and tubular while the peripheral ray florets are sterile or female and ligulate. It may be tubular homogamous (e.g., Ageratum), ligulate homogamous (e.g., Sonchus) or heterogamous (e.g., Sunflower). Capitulum inflorescence is found in family compositae, e.g., Tagetes, Zinnia, Sunflower (Helianthus annuus), Cosmos, Chrysanthe mum, Sonchus. The inflorescence is surrounded by one or more whorls of bracts called involucre. The florets are arranged in a centripetal fashion, e.g., younger towards the cenre and older towards the periphery. The latter are of two types, tubular and ligulate. The peduncle is somewhat flattened to form a receptacle that bears small sessile flowers called florets. The spathe is tubular in the basal region to protect the flowers.ĩ. In a spadix the appendix of the peduncle and the spathe are coloured to attract insects for pollination. The two types of flowers are separated by downwardly directed sterile hair or neuter flower, e.g., Colocasia, Arum. The lower part of the peduncle possesses sessile unisexual flowers, upper male and lower female. The peduncle bears an upper coloured and sterile appendix. It is a special type of spike which possesses a fleshy peduncle and a large green or coloured bract called spathe. Shahtoot), Poplar (Populus), Willow (Salix), Red Hot Cattail (Acalypha hispidd), Betula, Quercus.
The inflorescence is a compact unisexual, often hanging, spike which matures and falls down as a single unit, e.g., Mulberry (Morns, vern. They occur in family Gramineae (e.g., Wheat Oat, Grass, etc.). Spikelets are small and few flowered spikes which are surrounded at the base by two scales or glumes.
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