Definition of parastichy in English:

parastichy

nounPlural parastichies pəˈrastɪkipəˈrastəkē

Botany

(in phyllotaxis) an oblique row of leaves arranged in a secondary spiral.
〔植〕（叶序）斜列线。与ORTHOSTICHY 相对
Contrasted with orthostichy
Example sentencesExamples
- Curved lines show parastichies between stamens and last-formed tepals.
- There was a negative correlation between phyllotaxy and leaf primordium diameter: species with greater numbers of orthostichies or parastichies had smaller leaf primordia.
- Pistillate flowers, sterile male flowers, atypical bisexual flowers and staminate flowers are inserted on the same contact parastichies.
- However, in Jean's model it is not possible to determine the entropy of the phyllotactic system without knowing the number of visible opposed parastichies (m, n).

Origin

Late 19th century: from para-¹ 'adjacent' + Greek stikhos 'row, rank'.

Definition of parastichy in US English:

parastichy

nounpəˈrastəkē

Botany

(in phyllotaxis) an oblique row of leaves arranged in a secondary spiral.
〔植〕（叶序）斜列线。与ORTHOSTICHY 相对
Contrasted with orthostichy
Example sentencesExamples
- Pistillate flowers, sterile male flowers, atypical bisexual flowers and staminate flowers are inserted on the same contact parastichies.
- There was a negative correlation between phyllotaxy and leaf primordium diameter: species with greater numbers of orthostichies or parastichies had smaller leaf primordia.
- However, in Jean's model it is not possible to determine the entropy of the phyllotactic system without knowing the number of visible opposed parastichies (m, n).
- Curved lines show parastichies between stamens and last-formed tepals.

Origin

Late 19th century: from para- ‘adjacent’ + Greek stikhos ‘row, rank’.

词汇	parastichy
释义	Definition of parastichy in English: parastichy nounPlural parastichies pəˈrastɪkipəˈrastəkē Botany (in phyllotaxis) an oblique row of leaves arranged in a secondary spiral. 〔植〕（叶序）斜列线。与ORTHOSTICHY 相对 Contrasted with orthostichy Example sentencesExamples Curved lines show parastichies between stamens and last-formed tepals. There was a negative correlation between phyllotaxy and leaf primordium diameter: species with greater numbers of orthostichies or parastichies had smaller leaf primordia. Pistillate flowers, sterile male flowers, atypical bisexual flowers and staminate flowers are inserted on the same contact parastichies. However, in Jean's model it is not possible to determine the entropy of the phyllotactic system without knowing the number of visible opposed parastichies (m, n). Origin Late 19th century: from para-¹ 'adjacent' + Greek stikhos 'row, rank'. Definition of parastichy in US English: parastichy nounpəˈrastəkē Botany (in phyllotaxis) an oblique row of leaves arranged in a secondary spiral. 〔植〕（叶序）斜列线。与ORTHOSTICHY 相对 Contrasted with orthostichy Example sentencesExamples Pistillate flowers, sterile male flowers, atypical bisexual flowers and staminate flowers are inserted on the same contact parastichies. There was a negative correlation between phyllotaxy and leaf primordium diameter: species with greater numbers of orthostichies or parastichies had smaller leaf primordia. However, in Jean's model it is not possible to determine the entropy of the phyllotactic system without knowing the number of visible opposed parastichies (m, n). Curved lines show parastichies between stamens and last-formed tepals. Origin Late 19th century: from para- ‘adjacent’ + Greek stikhos ‘row, rank’.
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