raceme

n. cluster of flowers growing from one common stem

A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called  pedicels — along the axis. In  botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne towards the base and new flowers are produced as the shoot grows. A plant that flowers on a showy raceme may telegraph the fact in its scientific name, e.g. Cimicifuga racemosa.
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Noun
1. usually elongate cluster of flowers along the main stem in which the flowers at the base open first
(hypernym) flower cluster
(hyponym) panicle

n. (Botany) raceme, cluster of flowers growing from one common stem

(n.)
A flower cluster with an elongated axis and many one-flowered lateral pedicels, as in the currant and chokecherry.