| 释义 |
collenchyma Bot.|kɒˈlɛŋkɪmə|
[f. Gr. κόλλα glue + ἔγχυµα, ἔγχυµατ- infusion.]
†1. (See quots.). Obs.
1835Lindley Introd. Bot. (1848) I. 356 Link supposes the cellular substance in which pollen is generated to be semiorganic and calls it collenchyma. 1866Treas. Bot., Collenchyma..usually absorbed, but remaining and assuming a definite form in some plants, as in orchids.
2. Tissue consisting of cells with walls greatly thickened at the angles, found just beneath the epidermis in the leaf-stalks and young stems of many Dicotyledons.
1857Henfrey Elem. Bot. 514 Collenchyma..has acquired a cartilaginous or horny texture by its cells becoming greatly thickened by secondary layers of a substance softening or swelling up in water. 1875Bennett & Dyer Sachs' Bot. i. ii. 83 The collenchyma originates from the fundamental tissue, and..not from the epidermis. |