dodder

a leafless annual parasitic vine of the genus Cuscuta having whitish or yellow filamentous stems; obtain nourishment through haustoria

A plant of the genus Cuscuta. It is a leafless parasitical vine with yellowish threadlike stems. It attaches itself to some other plant, as to flax, goldenrod, etc., and decaying at the root, is nourished by the plant that supports it.

walk unsteadily

To shake, tremble, or totter.