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A spike is an unbranched, indeterminate inflorescence, similar to a raceme, but bearing sessile flowers (sessile flowers are attached directly, without stalks). [2] Examples occur on Malabar nut ( Justicia adhatoda ) and chaff flowers (genus Achyranthes ). [ 3 ]
The family Poaceae has a peculiar inflorescence of small spikes organised in panicles or spikes that are usually simply and improperly referred to as spike and panicle. The genus Ficus ( Moraceae ) has an inflorescence called a hypanthodium, which bears numerous flowers on the inside of a convex or involuted compound receptacle. [ 11 ]
In Poaceae, the grass family, a spikelet consists of two (or sometimes fewer) bracts at the base, called glumes, followed by one or more florets. [1]: 13 A floret consists of the flower surrounded by two bracts, one external (the lemma) and one internal (the palea).
A spike, usually pendulous, in which the mostly small flower s are unisexual and without a conspicuous perianth, e.g. in willows, poplars, oaks, and casuarinas. The individual flowers often have scaly bract s and are generally wind-pollinated. Catkins are usually shed as a unit. caudate Having a narrow, tail-like appendage or tip, e.g. a drip tip.
Spike of fruits- showing in succession (from below) female flowers, male flowers, and sterile flowers forming a ring of hairs borne on the spadix. Diagram of spadix In botany , a spadix ( / ˈ s p eɪ d ɪ k s / SPAY -diks ; pl. : spadices / ˈ s p eɪ d ɪ s iː z / SPAY -dih-seez , / s p eɪ ˈ d aɪ s iː z / spay- DY -seez ) is a type of ...
The basic framework is a panicle, The ultimate twigs are spikes, but not with individual flowers, but about fifty tiny umbels of 8 to 20 flowers each. H. ingens is another monocarp. Harmsiopanax may be the only genus which combines three types of inflorescence. Largest thyrse. Maypole Tree (Sohnreyia excelsa) Rutaceae. Amazon Basin
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.
The flower spikes are large and one-sided, with secund, bisexual flowers, each subtended by 2 leathery, green bracts. The sepals and the petals are almost identical in appearance, and are termed tepals. They are united at their base into a tube-shaped structure. The dorsal tepal is the largest, arching over the three stamens. The outer three ...