| 释义 |
dictyogen Bot.|ˈdɪktɪəʊdʒɛn, dɪkˈtaɪədʒɛn|
[f. Gr. δίκτυο-ν net + -γενης born, produced: see -gen1. Formed to match endogen, exogen, and other terms of the same classification.]
The name applied by Lindley to those plants which have a monocotyledonous embryo, and reticulated leaf-veins (in the latter respect resembling the Dicotyledons).
1846Lindley Veg. Kingdom 4 The separation by me of Endogens into 1. Endogens proper, and 2. Dictyogens. 1855― in Circ. Sc., Botany 184 Dictyogens are Endogens, but with the peculiarity that the root is exactly like Exogens without concentric circles, and the leaves fall off the stem by a clean fracture, just as in that class. 1857Berkeley Cryptog. Bot. §39. 52 Dictyogens are supposed to approach Exogens in their leaves and in the arrangement of their tissues, but their embryo and the development of their wood are distinctly monocotyledonous. 1860J. Darby Bot. Southern States 600 Dictyogens, monocotyledonous plants, with net-veined leaves, as smilax and trillium.
Hence dictyˈogenous a., belonging to this group of plants. |