a. Bot. [f. THALL-US + -OID.] Of the form of a thallus. So Thalloidal a.
1857. Henfrey, Bot., § 318. A lobed, green, thalloid stem. Ibid., § 321. The Thalloid Hepaticæ have a broad, more or less succulent lobed leaf-like expansion in place of stem and leaf.
1875. Bennett & Dyer, trans. Sachs’ Bot., 160. In Thallophytes and thalloid Hepaticæ, dichotomy is very widely prevalent.
1900. B. D. Jackson, Gloss. Bot. T., Thalloidal.
