orthostichyn.

Brit.

/ɔːˈθɒstᵻki/, U.S.

/ɔrˈθɑstəki/

Origin: A borrowing from Greek, combined with English elements; modelled on a German lexical item. Etymons: ortho- comb. form, Greek στίχος , -y suffix³.

Etymology: < ortho- comb. form + ancient Greek στίχος row, line (see stich n.) + -y suffix³, after German Orthostiche (1873 in the passage translated in quot. 1875; 1868 in first edition of the same text). Compare parastichy n.

Botany.

A vertical series of leaves attached directly above one another on an axis or shoot. Cf. parastichy n.

ΘΚΠ

the world > plants > part of plant > (defined by) distribution, arrangement, or position > [noun] > orthostichy or parastichy

superposition1830

strophe1846

orthostichy1875

parastichy1875

1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 167 If members are so arranged at different heights on an axis that their median planes coincide, they form a straight row or Orthostichy; generally there are two, three, or more orthostichies on an axial structure.

1904 F. W. Oliver tr. A. Kerner Nat. Hist. Plants (ed. 2) I. 397 If a whorl is composed of three leaves, and if the successive whorls be displaced through one-sixth of the circumference,..six rectilineal series of leaves or orthostichies originate, running parallel to one another down the stem.

1965 K. Esau Plant Anat. (ed. 2) xv. 356 It [sc. phyllotaxis] assumes that certain leaves occur exactly above one another, that is, along orthostichies..whereas plants with helical leaf arrangements have only parastichies.

1992 M. Ingrouille Diversity & Evol. Land Plants 50 In a plant with leaves, the orthostichies would be lines of leaves directly overlapping and shading each other on the stem.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orthostichy
释义	orthostichyn. Brit. /ɔːˈθɒstᵻki/, U.S. /ɔrˈθɑstəki/ Origin: A borrowing from Greek, combined with English elements; modelled on a German lexical item. Etymons: ortho- comb. form, Greek στίχος , -y suffix³. Etymology: < ortho- comb. form + ancient Greek στίχος row, line (see stich n.) + -y suffix³, after German Orthostiche (1873 in the passage translated in quot. 1875; 1868 in first edition of the same text). Compare parastichy n. Botany. A vertical series of leaves attached directly above one another on an axis or shoot. Cf. parastichy n. ΘΚΠ the world > plants > part of plant > (defined by) distribution, arrangement, or position > [noun] > orthostichy or parastichy superposition1830 strophe1846 orthostichy1875 parastichy1875 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 167 If members are so arranged at different heights on an axis that their median planes coincide, they form a straight row or Orthostichy; generally there are two, three, or more orthostichies on an axial structure. 1904 F. W. Oliver tr. A. Kerner Nat. Hist. Plants (ed. 2) I. 397 If a whorl is composed of three leaves, and if the successive whorls be displaced through one-sixth of the circumference,..six rectilineal series of leaves or orthostichies originate, running parallel to one another down the stem. 1965 K. Esau Plant Anat. (ed. 2) xv. 356 It [sc. phyllotaxis] assumes that certain leaves occur exactly above one another, that is, along orthostichies..whereas plants with helical leaf arrangements have only parastichies. 1992 M. Ingrouille Diversity & Evol. Land Plants 50 In a plant with leaves, the orthostichies would be lines of leaves directly overlapping and shading each other on the stem. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < n.1875
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