hibernaculumn.
/hʌɪbəˈnakjuːləm/ΚΠ
1699 J. Evelyn Acetaria (Plan) sig. bv Of Orangeries..Hybernacula, Stoves, and Conservatories.
2. Zoology. The winter quarters or place of retirement of a hibernating animal.
ΘΚΠ
the world > animals > by habitat > habitat > [noun] > dwelling place or shelter > in winter
latebra1626
winter quarters1659
hibernaculum1770
1770 G. White Let. 22 Feb. in Nat. Hist. Selborne (1789) 77 Hedge-hogs make a deep and warm hybernaculum with leaves and moss.
1816 W. Kirby & W. Spence Introd. Entomol. (1843) II. 348 It shall seek out appropriate hybernacula or winter quarters and in them fall into a profound sleep.
1866 R. Tate Plain & Easy Acct. Mollusks Great Brit. iv. 135 This it lines with leaves, retires to its hybernaculum and closes the aperture of the shell.
3. Botany. A part of a plant adapted to protect an embryonic organ during the winter, as a bulb or special bud.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [noun] > parts of > embryo or radicle > hibernaculum or protective part
hibernaculum1765
1765 J. Lee Introd. Bot. (ed. 2) Gloss. 463 Hybernaculum, Winter-lodge, the Part of a Plant that incloses and secures the Embryo from External Injuries.
1785 T. Martyn tr. J.-J. Rousseau Lett. Elements Bot. i. 27 (note) He [sc. Linnæus] names them Hybernacula, winter gems or buds, into which the whole plant retires during the cold season.
1860 R. Tyas Wild Flowers 31 [Butterwort] There are formed small round leafy buds or hybernacula, about half an inch in diameter.
4. Zoology.
a. An encysted winter-bud of a polyzoan, which germinates in the following spring.
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1885 E. R. Lankester in Encycl. Brit. XIX. 433/1 The only approach to a differentiation of the polypides in Paludicella is in the arrest of growth of some of the buds of a colony in autumn, which, instead of advancing to maturity, become conical and invested with a dark-coloured cuticle. They are termed hybernacula.
b. The epiphragm or false operculum of a snail.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > order Pulmonifera > member of > parts of > false operculum
hibernaculum1888
1888 T. H. Huxley & H. N. Martin Course Elem. Biol. 273 It is no uncommon thing to find, during the warm season, individuals [snails] to the exterior of whose shells there adhere one or more (often a great number) of..hybernacula, cast off by their fellows on emerging from the dormant state.
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 108 When the snail hibernates it closes the aperture of its shell by a whitish disc, the hibernaculum or epiphragma.
This entry has not yet been fully updated (first published 1898; most recently modified version published online September 2018).
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