youth-on-age en · NOUN
Etymology
From the way young plantlets sprout from the middle of older leaves.
Meanings
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(uncountable) A perennial plant native to North America and widely planted as an ornamental: Tolmiea menziesii
Sometimes flowers of youth-on-age are white streaked with green instead of greenish streaked with purple.
1972, Hazel Heckman, Island Year, page 132:
Synonyms
hedge nettle (Tolmiea menziesii) · thousand mothers (Tolmiea menziesii) · piggyback plant (Tolmiea menziesii)