Flora of Ashdown Forest - Botanical Society of the British Isles

Arum maculatum. Lords~and~ladies, Cuckoo pint, Lily grass, Small dragon, Great dragon, Ram's horn, Wake Robin,Schoolmaster.Recorded widely around the Forest in hedges, woodland, gardens and road verges,usually on the richer soils,Recorded in 92% of the tetrads in Sussex (Hall 1980). Widespread in Britain andreaching its northern limit in southern Scotland. Western, central and southern Europe,and North Africa.1934*Arum italicum subsp. italicum. Italian lords-and-Iadies.Several clumps established in lane east of ford at Oldlands Farm {476.2681, leaping offdown lane from the farm garden, 1995, TR & PA; one plant in hedge by Duddleswellcross-roads {471 .2881. 1995, RN & ER.Subsp. italicum is increasing as a garden escape in England (Rich & Woodruff3 -++------Lj- 1996), and is native in southern and western Europe and North Africa. None of thenative 5ubsp. neglectum has been found, and would probably not be expected (Prime,Buckle & Lovis 1955).4 5LEMNACEAE* Spirode/a po/yrhiza. Greater duckweed.A few plants in a new pond in Pippingford Park {448.2991, 1995, TR, where it wasprobably an accidental introduction w'lth other aquatics,Locally abundant in rivers, ditches and ponds in Sussex, especially on the grazingmarshes of areas such as Pevensey and Lewes, and locally distributed in lowland Britain,3 Widespread in Europe except the extreme north and south, and many other places in theworld.4 5Lemna minor. Common duckweed.Common on the Forest {Hall 19801.Scattered mainly around the edges of the Forest, in small flushes, open and shadedponds, and in the Medway. This is our commonest duckweed, as it is in Britain.It is widespread in Sussex in a wide range of aquatic habitats and a range of water3 -++---~--'+- conditions. L minor is able to grow optimally at lower levels of phosphate in the waterthan the other duck weeds, whilst L minuta is able to grow at lower nitrogenconcentrations (Lound 1980), It occurs throughout lowland Britain and Europe,4 5Lemna trisu/ca, Ivy-leaved duckweed.,----,-==---'--,-----, Tetrad 43 B (H a 11 1980).Pond at Ridge Road (446.328), 1993, TR, but not seen in 1995.This submerged duckweed is quite shade-tolerant, often growing under otherfloating aquatics and may- not be noticed unless fished out with a grapnel or stick, It is3 -++---------'_+_locally distributed in Sussex, and widespread in lowland Britain and Europe, It iscosmopolitan except for the polar regions and the tropics,4 5