rhexigenousadj.

1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns i. vii. 200 We may call the first mode of origin [of intercellular spaces] schizogenetic, the second lysigenetic, and, if a special term must be adopted for the mechanical rupture, it may be called rhexigenetic.]

1888 Encycl. Brit. XII. 16/2 De Bary distinguishes all these by separate names, viz., schizogenous when formed by the destruction of certain cells..and rhexigenous when produced by mechanical disruption.

1906 Ann. Bot. 20 15 These air-spaces differ from those occurring in the medulla of the Chlorocyperaceae in that they are lysigenous, or rhexigenous, according to De Bary.

1957 Bot. Rev. 23 304 Rhexigenous lacunae would appear to be quite common in fleshy fungi, while lysigenous and schizogenous ones are more often found in higher, green plants.

1978 Acta Amazonica 7 484/2 Rhexigenous lacunae are present both in the petiole and midrib of the leaf blade.

2006 Rev. Palaeobot. & Palynol. 142 207/1 Stretching often causes mechanical rupture of cells to make rhexigenous lacunae.

1959 Phytomorphology 9 402/2 Rhexigenously formed lacunae and diaphragms become delimited in the lamina midrib, ligule region, central region of the sheath and sheath wings.

1965 K. Esau Plant Anat. (ed. 2) viii. 188 Other large air spaces may arise lysigenously or rhexigenously.

2004 O. Appel in K. Kubitzki Families & Genera Vascular Plants VI. 427/1 Usually the pseudocorolla has a thick leathery texture and opens rhexigenously at anthesis.

1965 K. Esau Plant Anat. (ed. 2) xvii. 487 Large spaces may also result from a more or less extensive breakdown of cells by processes of lysigeny or rhexigeny.

2000 J. Hather Archaeol. Parenchyma 41 A further type of cavity formation in plants is rhexigeny.