Vicia villosa - Fodder Vetch
Judging by the records, Fodder Vetch was a persistent alien in Penzance. In 1989, it was seen again near the Heliport (SW43V, R.M.Phillips, det. A.L.Grenfell), having not been recorded since 1952. In 1991 it was discovered growing amongst numerous other grain aliens at the disused Loggans Mill, near Hayle (SW53U, A.L.Grenfell).
French, C.N., Murphy, R.J. & Atkinson, M. 1999. Flora of Cornwall. Wheal Seton Press, Camborne.