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The gnathosoma (from Greek γνάθος, gnáthos = "jaw" and σώμα, sóma = "body") is the part of the body of the Acari (mites and ticks) comprising the mouth and feeding parts. [1] These are the hypostome, the chelicerae and the pedipalps. [2] It is also called the capitulum [3] (however, this word also has other meanings).
In botany, an inflorescence is a group or cluster of flowers arranged on a plant's stem that is composed of a main branch or a system of branches. [1] An inflorescence is categorized on the basis of the arrangement of flowers on a main axis and by the timing of its flowering (determinate and indeterminate). [2]
capitulum (plural capitula) may refer to: the Latin word for chapter. an index or list of chapters at the head of a gospel manuscript; a short reading in the Liturgy of the Hours. derived from which, it is the Latin for the assembly known as a chapter; a typographic symbol (⸿), to mark chapters or paragraphs, now evolved into the pilcrow
1. (of an inflorescence) Having a knob-like head, with the flowers unstalked and aggregated into a dense cluster. 2. (of a stigma) Like the head of a pin. capitulum Dense cluster of sessile or subsessile flower s or floret s, e.g. a flower head in the daisy family Asteraceae. See pseudanthium. capsule
At the upper end of the pendant inflorescence are several concave bracts angled to reflect and focus the sonar pulses of bats, helping the bats to locate the flowers. In the middle of the inflorescence the tubular,tetramerous flowers, about twenty in number, form a discoid circle (or flat umbel) about three inches (eight centimeters) in diameter.
Illustration of the gnathosoma of an acarine, showing the subcapitulum. The subcapitulum (from Latin sub, "under", and capitulum, "small head"), also known as infracapitulum, [1] [2] hypognathum [3] or hipognatum, refers to the ventral part of the gnathosoma (the part of the body comprising the mouth and feeding parts) [4] or the fusion of the palpal (of the pedipalps, the second pair of ...
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For example, the "flower" of the well known Anthurium spp. is a typical spadix with a large colorful spathe. [ 1 ] In this type of inflorescence , the peduncle is thick, long and fleshy, having small sessile unisexual flowers covered with one or more large green or colourful bracts (spathe).