During the succeeding thaw the soil particles fall away from the lifted root-fibres, and frequent repetition of these processes results in such complete exposure of the roots to the full sun that the plantlet falls over and wilts.
"Disease in Plants"
H. Marshall Ward
When the drawings are made, let them letter alike the corresponding parts, beginning with the plantlet in the seed, and using new letters when a new part is developed.
"Outlines of Lessons in Botany, Part I; From Seed to Leaf"
Jane H. Newell