| 释义 |
parichnos|pəˈrɪknɒs|
[a. F. parichnos (C. E. Bertrand 1891, in Trav. & Mém. Facultés de Lille II. vi. 84), f. para-1 + Gk. ἴχνος track, trace.]
A strand of tissue found beside the leaf traces in fossil plants of the family Lepidodendraceæ. Also attrib.
1893W. C. Williamson in Phil. Trans. R. Soc. B. CLXXXIV. 10 Since I agree with M. Bertrand on this point, I shall accept and employ his name of parichnos. 1906Ann. Bot. XX. 269 (title) On the presence of a parichnos in recent plants. Ibid., The term Parichnos was used by Bertrand to designate the thin-walled parenchymatous strand of tissue, occurring in Lepidodendron Harcourtii, which accompanies the leaf-trace on the posterior side during its outward journey. 1935F. O. Bower Primitive Land Plants. xii. 234 These lateral pits are connected internally with the parichnos. 1969F. E. Round Introd. Lower Plants xi. 135 Two structures entirely unknown in modern lycopods occur on either side of the leaf trace—these are the parichnos scars. Ibid., There may be two other scars beneath the leaf scar which are also parichnos strands branching off those entering the leaf. |