Research Literature
BW I:
Bierbaumer, Peter.
Der botanische Wortschatz des Altenglischen. Grazer Beiträge zur Englischen Philologie 1. Bern, Frankfurt am Main: Lang, 1975.
LB:
Cockayne, Oswald Thomas (ed.).
"Leech Book." In: Leechdoms, Wortcunning and Starcraft of Early England. Being a Collection of Documents, for the Most Part never before Printed, Illustrating the History of Sience in this Country before the Norman Conquest. Vol. 2. Rev. Ed. by Charles Singer. London: Longman [et. al.], 1961. 1-360.
LB:
Leonhardi, Günther.
Kleinere angelsächsische Denkmäler I. Bibliothek der ags. Prosa VI. Hamburg: Grand, 1905.
Deegan, Marilyn.
A Critical Edition of MS. B.L. Royal 12.D.XVII: Bald's 'Leechbook'. Diss. Univ. of Manchester. 1988.
Hegi, Gustav.
Illustrierte Flora von Mitteleuropa. Mit bes. Berücks. v. Oesterreich, Deutschland u. d. Schweiz. Zum Gebrauche in d. Schulen u. zum Selbstunterricht. Bd 1-7. Wien: Pichler, 1906.
MS London, British Library, Royal 12 D.xvii.
Wright, Cyril E. (ed.).
Bald's Leechbook. Early English manuscripts in facsimile. 5. Kopenhagen: Rosenkilde & Bagger, 1955.
The adjective refers to the head-shaped florescense of Allium porrum L., which, according to Hegi (1906,II,290), looks like a billiard-ball". Maybe it is used to distinguish the plant from the cultivated species, which has no umbel (cf. Hegi 1906,II,290, fig.520e).