Rosette (English spelling)

Japanese: ロゼット（英語表記）rosette

(1) A term in plant morphology. It refers to a morphology in which the internodes of a stem are compact and the leaves grow in a circular carpet-like pattern at almost the same height, resembling a rose flower. This is a growth type in which the number of nodes increases as the stem grows, but the elongation of the internodes is significantly suppressed. It is seen in the perennial stems of biennial herbaceous plants (e.g., radish) and perennial herbaceous plants (e.g., dandelion), in which the leaves appear just above the roots and cover the ground. In many of these plants, when the internodes elongate due to changes in temperature and daylight hours, the stems become of a normal shape. (2) Also called ciliated ring, it refers to a cluster of cells found in the wall of the gastro-hydrodynamic system of comb jellies. It is a structure similar to the flame cells of the protonephridia, and there are two theories: one is that it is an excretory organ, and the other is that it is an organ that transports water and nutrients from the gastro-hydrodynamic system to the body.

rosette
Rosette

A floral decorative motif. It has been used frequently in architecture, sculpture, and crafts since ancient times. It is an abstract design of a blooming flower, usually in a rounded oval or polygon surrounded by a single circle, double or triple circles. Egyptian designs are thought to have been based on the lotus flower, but generally it is a rose-shaped design, and there are also motifs that rotate from the center to the circumference, which are called spiral rosettes.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

(1) 植物形態学上の用語。茎の節間部が詰ってほとんど同じ高さから円形の敷物状に葉が叢生して，バラの花のようになった形態をいう。これは茎の生長時に節数はふえながら節間の伸長が著しく抑制された生育型である。二年生草本植物 (たとえばダイコン) ，多年生草本植物 (たとえばタンポポ) などの越年の茎にみられ，葉が根のすぐ上から出て地面をおおっているようにみえる。これらの植物の多くは，温度や日照時間の変化によって節間部が伸びれば普通の形態の茎となる。 (2) 繊毛環 (せんもうかん) ともいい，クシクラゲの胃水管系の壁にみられる細胞の集りをさす。原腎管の炎細胞に似た構造で，排出器官であるという説と，胃水管系から体内に水や栄養を送る器官であるという説とがある。

ロゼット
rosette

花形の装飾モチーフ。非常に古い時代から頻繁に建築，彫刻，工芸品に用いられた。一般に単円または2重，3重の円に囲まれた丸い楕円形，多角形の中に，開花した花を抽象図式化した文様。エジプトのものは蓮華 (れんげ) を主題にしたものと思われるが，一般にはばら形文様で，中心から円周に向って旋回するようなモチーフもあり，これを螺旋ロゼットと呼んでいる。

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