A vegetable structure without vascular tissue, in which there is no differentiation into stem and leaves, and from which true roots are absent.
单词 | θ22132 |
释义 | the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > thallus (13) thallus1829 A vegetable structure without vascular tissue, in which there is no differentiation into stem and leaves, and from which true roots are absent. proembryo1854 The gametophyte stage of the life cycle of a pteridophyte; = prothallus, n. 1. Obsolete. rare. prothallus1854 The gametophyte of a pteridophyte (fern, horsetail, clubmoss, etc.), which is typically a tiny, free-living, thallus-like structure, produced by… protonema1857 The juvenile form of a bryophyte (usually consisting of a branched filamentous structure, but sometimes flat or platelike), developing on the… prothallium1858 = prothallus, n. 1. thallome1875 = thallus, n. blastema1880 Botany. The budding or sprouting part of a plant; the thallus of a lichen. prothallus1921 An area of exclusively fungal tissue around the margin of a crustose lichen; a hypothallus. Subcategories:— plant having or thallophyte (3) — plant not having or cormophyte (2) |
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