Bot. Pl. soredia. [mod.L., f. Gr. σωρός a heap. Cf. F. sorédion.] A thallus-bud or cell in lichens. Usu. in pl.
1829. Loudon, Encycl. Plants (1836), 949. Soredia are little heaps of free, pulverulent bodies, mostly of a whitish color, placed on various parts of the frond.
1866. Treas. Bot., 867/2. The soredia predominating over the crust it assumes the name of Lepraria.
1882. Vines, trans. Sachs’ Bot., 327. A a simple soredium, consisting of a gonidium covered with a web of hyphæ;… C a group of simple soredia.
