pappusn.

Brit.

/ˈpapəs/, U.S.

/ˈpæpəs/

Inflections: Plural pappi, pappuses.

Origin: A borrowing from Latin. Etymon: Latin pappus.

Etymology: < classical Latin pappus white down on certain seeds, old man < ancient Greek πάππος white down on certain seeds, grandfather, in Hellenistic Greek also first down on the chin, a reduplicated formation parallel to πάππας , child's word for ‘father’ (see papa n.²). Compare earlier pappe n.

1. Botany. A downy or feathery appendage on certain fruits, esp. on the achenes of many plants of the family Asteraceae ( Compositae), which assists their aerial dispersal (as in thistles, dandelions, etc.). Also: the reduced calyx of plants of the family Asteraceae ( Compositae) generally, whether downy, bristly, scaly, toothed, or membranous. Also as a mass noun: thistledown, down.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > calyx > pappus or appendage on seed

plume1578

pappe1657

pappus1704

corona1753

coronule1806

coma1830

plumule1894

1704 J. Harris Lexicon Technicum I Pappus, in Botany, is that soft light Down, which grows out of the Seeds of some Plants, such as Thistles, Dandelion, Hawkweed, etc.

1766 Philos. Trans. 1765 (Royal Soc.) 55 268 Part of a hair of the pappus that adheres to the rudiments of the seeds in Sonchus oleraceus, with the corpuscles within them.

1800 J. Hull Elements Bot. I. 142 (note) If you place the pappuses of Silybum and Suprago near each other, the former..may easily seem feathery.

1811 A. T. Thomson London Dispensatory ii. 397 The capsule is crowned with a feathery pappus.

1866 J. Lindley & T. Moore Treasury Bot. II. 844/2 Pappus, the calyx of composites, in which that organ is reduced to a membrane, or scales, or hairs, or a mere rim.

1899 Science 30 June 906/1 A bird would alight on a bull thistle and the pappus would float away as it feasted.

1917 D. H. Lawrence First Morning in Compl. Poems (1993) Myriads of dandelion pappus Bubbles ravelled in the dark green grass.

1961 R. W. Butcher New Illustr. Brit. Flora II. 547 Achenes ellipsoid, compressed,..surmounted by a white pappus of simple hairs.

1972 Ann. Missouri Bot. Garden 59 365 Our professor told us that he wanted us to make models of the pappi of as many different composites as we could obtain.

1994 Ann. Rev. Ecol. & Evol. 25 275 The pappuses of some species of Asteraceae collapse irreversibly..in response to humidity.

†2. Soft downy hair on the skin; the soft first growth of beard on an adolescent. Obsolete. rare.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > life > the body > hair > types of hair > [noun] > down > of face

pappus1857

cheek-down1887

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Pappus, term for the first downy beard of the chin.

1893 New Sydenham Soc. Lexicon Pappus... Also, the downy hair of the skin and cheeks.

Derivatives

ˈpappus-like adj. Botany

ΚΠ

1829 J. Lindley Synopsis Brit. Flora 139 Fruit dry, various, indehiscent, 1-celled, crowned by the pappus-like calyx.

1909 Bull. Torrey Bot. Club 36 393 There occur..between the individual flowers, rather long hairs which are entirely distinct from the pappus-like hairs of the fruit.

1987 Brittonia 39 261 The seeds are linear-fusiform, with an ochraceous pappus-like brush of unbranched hairs at the apex.

This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).

单词	pappus
释义	pappusn. Brit. /ˈpapəs/, U.S. /ˈpæpəs/ Inflections: Plural pappi, pappuses. Origin: A borrowing from Latin. Etymon: Latin pappus. Etymology: < classical Latin pappus white down on certain seeds, old man < ancient Greek πάππος white down on certain seeds, grandfather, in Hellenistic Greek also first down on the chin, a reduplicated formation parallel to πάππας , child's word for ‘father’ (see papa n.²). Compare earlier pappe n. 1. Botany. A downy or feathery appendage on certain fruits, esp. on the achenes of many plants of the family Asteraceae ( Compositae), which assists their aerial dispersal (as in thistles, dandelions, etc.). Also: the reduced calyx of plants of the family Asteraceae ( Compositae) generally, whether downy, bristly, scaly, toothed, or membranous. Also as a mass noun: thistledown, down. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > calyx > pappus or appendage on seed plume1578 pappe1657 pappus1704 corona1753 coronule1806 coma1830 plumule1894 1704 J. Harris Lexicon Technicum I Pappus, in Botany, is that soft light Down, which grows out of the Seeds of some Plants, such as Thistles, Dandelion, Hawkweed, etc. 1766 Philos. Trans. 1765 (Royal Soc.) 55 268 Part of a hair of the pappus that adheres to the rudiments of the seeds in Sonchus oleraceus, with the corpuscles within them. 1800 J. Hull Elements Bot. I. 142 (note) If you place the pappuses of Silybum and Suprago near each other, the former..may easily seem feathery. 1811 A. T. Thomson London Dispensatory ii. 397 The capsule is crowned with a feathery pappus. 1866 J. Lindley & T. Moore Treasury Bot. II. 844/2 Pappus, the calyx of composites, in which that organ is reduced to a membrane, or scales, or hairs, or a mere rim. 1899 Science 30 June 906/1 A bird would alight on a bull thistle and the pappus would float away as it feasted. 1917 D. H. Lawrence First Morning in Compl. Poems (1993) Myriads of dandelion pappus Bubbles ravelled in the dark green grass. 1961 R. W. Butcher New Illustr. Brit. Flora II. 547 Achenes ellipsoid, compressed,..surmounted by a white pappus of simple hairs. 1972 Ann. Missouri Bot. Garden 59 365 Our professor told us that he wanted us to make models of the pappi of as many different composites as we could obtain. 1994 Ann. Rev. Ecol. & Evol. 25 275 The pappuses of some species of Asteraceae collapse irreversibly..in response to humidity. †2. Soft downy hair on the skin; the soft first growth of beard on an adolescent. Obsolete. rare.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > life > the body > hair > types of hair > [noun] > down > of face pappus1857 cheek-down1887 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Pappus, term for the first downy beard of the chin. 1893 New Sydenham Soc. Lexicon Pappus... Also, the downy hair of the skin and cheeks. Derivatives ˈpappus-like adj. Botany ΚΠ 1829 J. Lindley Synopsis Brit. Flora 139 Fruit dry, various, indehiscent, 1-celled, crowned by the pappus-like calyx. 1909 Bull. Torrey Bot. Club 36 393 There occur..between the individual flowers, rather long hairs which are entirely distinct from the pappus-like hairs of the fruit. 1987 Brittonia 39 261 The seeds are linear-fusiform, with an ochraceous pappus-like brush of unbranched hairs at the apex. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.1704
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