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Raceme

 

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Raceme


 
 



A raceme is a type of inflorescenceInflorescence

An inflorescence is a group or cluster of flowers on a branch of a plant....
 that is unbranched and indeterminateIndeterminate growth

In biology and especially botany, indeterminate growth refers to growth that is not terminated in contrast to determinate ...
 and bears pedicellate flowerFlower

A flower,rflorem<flos), also known as a bloom or blossom, is the reproductive structure found i...
s — flowers having short floral stalks called pedicelPedicel (botany)

A pedicel is a stem that attaches single flowers to the main stem of the inflorescence....
s — along the axis. In botanyBotany

Botany is the scientific study of plantlife....
, 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 racemosaCimicifuga racemosa

Cimicifuga racemosa is a member of the family Ranunculaceae, native to eastern North America from the extreme south of O...
.

A spike is a type of raceme in which individual flowers are sessile (that is, lack pedicels). The term spikelet can refer to a small spike, although it is primarily used to refer to the ultimate flower cluster unit in the grasses, in which case the stalk supporting the cluster becomes the pedicel. A spikelet comprises one or more florets enclosed by two glumeGlume

A glume, in grasses and sedges, is a basal, membranous, outer sterile husk or bract in grass flowers that do not stand direc...
s (bracts), and is not a raceme.

A spadixSpadix

In botany, a spadix is a type of spike: an inflorescence with small flowers crowded on a thickened, fleshy axis....
is a form of spike in which the florets are densely crowded along the axis.