rhizinen.

1832 J. Lindley Introd. Bot. i. ii. 76 The terms rhizina and rhizula have been given by Professor Link to the young roots of mosses and lichens.

1861 W. Mudd Man. Brit. Lichens 4 It usually presents itself under a two-fold aspect, viz.: Rhizines, that is to say, the black or brown fibres, which occur on the under side of most foliaceous Lichens.

1873 F. H. Hooker & J. D. Hooker tr. E. Le Maout & J. Decaisne Gen. Syst. Bot. 941 The lower layer, or hypothallus..is..covered with rootlike hairs, which have been called rhizines.

1887 W. Phillips Man. Brit. Discomycetes 40 The rhizinæ are coarse fibres occupying the greater part of the under surface.

1914 M. Drummond tr. G. Haberlandt Physiol. Plant Anat. v. 260 Among lichens the lower side of the thallus produces numbers of rhizoidal hyphae, which..act as root-hairs. In certain species they are united to form stout strands, the so-called rhizines.

1938 G. M. Smith Cryptogamic Bot. I. xv. 515 A rhizine may consist of a single simple to branched hypha or of a number of parallel hyphae that lie closely applied to one another.

1977 Nature 6 Jan. 46/1 In contrast to lichens and mosses, whose rhizines and rhizoids serve mainly for attachment, trees have root systems which transport sulphate upward.

2004 Jrnl. Range Managem. 57 90/2 Depending on the intensity of fires, biological crust components such as fungal hyphae..and moss and lichen rhizines may persist for some time after burning.