noun (plural pappi /-pʌɪ, -piː/)Botany
The tuft of hairs on each seed of thistles, dandelions, and similar plants, which assists dispersal by the wind.
More example sentences
- The achenes are terete, narrowed at the base, 5 x 0 • 7 mm, ribbed and black, with a basal tuft of hairs and a pappus consisting of five ovate, petal-like scales.
- The pauciflorous capitulum consists of outer female florets with short ligules, inner hermaphrodite florets without a pappus, and five outer involucral bracts, up to 2 cm long, possessing long-stalked glandular hairs.
- Coode and Richardson pointed out a relationship between Centranthus and Valeriana because both genera share a plumose pappus.
early 18th century: via Latin from Greek pappos.
- More example sentences
- Fundamentally, in a calm atmosphere, pappose seeds make vertical descending flights by utilizing the drag force acting on the pappi.
- The mandibular palp is very large, flattened, and has pappose setae along the rim.