haustoriumn.
/hɔːˈstɔːrɪəm/ Botany.
A small sucker of a parasitic plant, which penetrates the tissues of the host; a specialized branch or organ of the mycelium of a fungus, whereby it attaches itself to its host.
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sucker1849
haustorium1875
1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 733 These haustoria and adhesive discs.. are altogether indispensable for the life of the plant; for Cuscuta is nourished exclusively by the haustoria which penetrate into the tissue of the host.
1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 311 The ramified mycelial filaments extend over the epidermis, crossing and re-crossing one another, and throw out haustoria at numerous points which penetrate into the cells of the epidermis.
This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2018).
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n.1875