the stem of L. umbrācul-um sun-shade (see UMBRACLE), employed in the botanical adjs. umbraculiferous, umbraculiform [F. (bot.) umbraculiforme]: (see quots.).
1847. Wester, Umbraculiform, having the form of an umbraculum or arbor.
1857. A. Gray, First Less. Bot., 235. Umbraculiform, umbrella-shaped, like a Mushroom, or the top of the style of Sarracenia.
1862. Mayne, Med. Voc., 422. Umbraculiferus,… Bot., formed like a parasol: umbraculiferous.
