[Gk. thallos, a young twig] A simple plant or algal body without true roots, leaves, or stems.

1829, Latin, from Greek thallos "green shoot, young branch, twig," related to thalia "abundance," thalos "scion, child," ultimately from PIE root *dhal- "to bloom&qu [..]

body of some plants and plant-like organisms, not differentiated into roots, stems, or leaves.

A flat leaf-shaped part in the early life cycle of a fern Thatch

the vegetative body of a plant that is not differentiated into organs such as stems and leaves, e.g. algae, the gametophytes of many liverworts, and family Lemnaceae.

Plant body without root, stem or leaves.

vegetative body, typically a mycelial, and typically non-motile -thecium

(n) a plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes

N M young/green branch/bough/stalk; laurel or olive or myrtle (L+S) branch

A plant body without true stems, leaves, and roots; characteristic of thallophytes, a class of plants that includes algae, fungi, and lichens.

The body of an undifferentiated plant , such as a fungus.

(botany) An undifferentiated plant body, such as in algae. (botany) Any plant body lacking vascular tissue.