propagulumn.

Brit.

/prəʊˈpaɡjᵿl(ə)m/, U.S.

/proʊˈpæɡjəl(ə)m/

Inflections: Plural propagula, propagulae.

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

Etymology: < scientific Latin propagulum (1807 or earlier) < classical Latin propāgō shoot laid down in layering, runner (see propagate v.) + -ulum -ulum suffix. Compare later propagule n.The plural form propagulae apparently arose from reinterpretation of the plural propagula as a Latin feminine singular.

Botany.

A portion of a plant, lichen, etc., capable of giving rise to a new individual; spec. (a) (in a lichen) a fragment of the thallus capable of propagating the lichen; †(b) a runner (obsolete); (c) (in certain brown algae) a modified branch which serves to reproduce the plant vegetatively. Cf. propagule n.

ΘΚΠ

the world > plants > part of plant > shoot, sprout, or branch > [noun] > runner, creeping, or trailing shoot

runner1652

trailing1727

propagulum1807

flagellum1861

the world > plants > particular plants > algae > [noun] > brown algae and parts

propagulum1807

phaeoplast1886

brown algae1902

1807 J. E. Smith Eng. Bot. XXIV. 1663 May the propagula of the latter [sc. Lepraria] be analogous to the buds or bulbs of some other vegetables?

1832 J. Lindley Introd. Bot. 205 Soredia..are heaps of powdery bodies lying upon any part of the surface of the thallus; the bodies of which the soredia are composed are called conidia by Link, and propagula by others.

1849 J. H. Balfour Man. Bot. §191 The propagulum.., or offset, is a short thick branch produced laterally in fleshy plants from a shortened axis, and developing a bud at its extremity, which is capable of living when detached, as in Houseleek.

1874 R. Brown Man. Bot. Gloss. 611/1 Propagulum , a runner ending in a germinating bud.

1902 Bull. Torrey Bot. Club 29 507 Goebel ascribes the formation of these propagula to the latent power retained by every cell of the liverwort..to develop as if it were a spore.

1931 L. Newton Handbk. Brit. Seaweeds p. xi Vegetative reproduction may take place by the formation of propagulæ as in Sphacelaria.

1983 Ann. Missouri Bot. Garden 70 200 Propagulae in groups on stalks in axils of upper leaves.

2000 Forest Ecol. & Managem. 135 158/1 Regrowth occurs from three sources: (1) buried seeds, rhizomes, spores or other propagula; (2) plants established prior to gap formation; (3) [etc.].

This is a new entry (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	propagulum
释义	propagulumn. Brit. /prəʊˈpaɡjᵿl(ə)m/, U.S. /proʊˈpæɡjəl(ə)m/ Inflections: Plural propagula, propagulae. Origin: A borrowing from Latin. Etymon: Latin propagulum. Etymology: < scientific Latin propagulum (1807 or earlier) < classical Latin propāgō shoot laid down in layering, runner (see propagate v.) + -ulum -ulum suffix. Compare later propagule n.The plural form propagulae apparently arose from reinterpretation of the plural propagula as a Latin feminine singular. Botany. A portion of a plant, lichen, etc., capable of giving rise to a new individual; spec. (a) (in a lichen) a fragment of the thallus capable of propagating the lichen; †(b) a runner (obsolete); (c) (in certain brown algae) a modified branch which serves to reproduce the plant vegetatively. Cf. propagule n. ΘΚΠ the world > plants > part of plant > shoot, sprout, or branch > [noun] > runner, creeping, or trailing shoot runner1652 trailing1727 propagulum1807 flagellum1861 the world > plants > particular plants > algae > [noun] > brown algae and parts propagulum1807 phaeoplast1886 brown algae1902 1807 J. E. Smith Eng. Bot. XXIV. 1663 May the propagula of the latter [sc. Lepraria] be analogous to the buds or bulbs of some other vegetables? 1832 J. Lindley Introd. Bot. 205 Soredia..are heaps of powdery bodies lying upon any part of the surface of the thallus; the bodies of which the soredia are composed are called conidia by Link, and propagula by others. 1849 J. H. Balfour Man. Bot. §191 The propagulum.., or offset, is a short thick branch produced laterally in fleshy plants from a shortened axis, and developing a bud at its extremity, which is capable of living when detached, as in Houseleek. 1874 R. Brown Man. Bot. Gloss. 611/1 Propagulum , a runner ending in a germinating bud. 1902 Bull. Torrey Bot. Club 29 507 Goebel ascribes the formation of these propagula to the latent power retained by every cell of the liverwort..to develop as if it were a spore. 1931 L. Newton Handbk. Brit. Seaweeds p. xi Vegetative reproduction may take place by the formation of propagulæ as in Sphacelaria. 1983 Ann. Missouri Bot. Garden 70 200 Propagulae in groups on stalks in axils of upper leaves. 2000 Forest Ecol. & Managem. 135 158/1 Regrowth occurs from three sources: (1) buried seeds, rhizomes, spores or other propagula; (2) plants established prior to gap formation; (3) [etc.]. This is a new entry (OED Third Edition, June 2007; most recently modified version published online March 2022). < n.1807
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