286 AROIDER. LEMNACE®. 
ACORUS Jl. 
A. Calamus LZ. Sweet Flag. 
Denizen. E. Rivers, pools, Local and rare. P. June-July. 
First record, Pilkington, 1789. 
C. Cutthorpe, near Chesterfield, Pilkington. Norton, Hb. Salt. Newbold, 
Drabble. 
Tl. Ponds, Osmaston-by-Ashbourne, A. Linton. 
T2. Ponds, Breadsall Priory, Crewe d: Whittaker. 
T3. Drakelow, Gibbs. Burton-on-Trent, Harris, C.D. Near Willington 
3ridge and the Junction Osier-beds, Rept. F. d& F. 
LEMNACEA. 
LEMNA 1. 
L. trisulea ZL. Lvy-leaved Duckweed. 
Native. EB. Ponds, ditches, canals. Frequent. A. June-July. 
First record, Glover, 1829. 
C. Hardwick Park; New Stanton. 
T1. Pools [Osmaston-by-Ashbourne neighbourhood], Smith MSS. Pond 
between Yeaveley and Cubley; swamps near the river, Marston-on-Dove; Sud- 
bury, by the railway; Brailsford Hall; marsh, Yeldersley Lane; pond at north 
end of Meynell Langley Park; Radbourn; Etwall; marshes below Findern. 
T2. Sandiacre; back-water west of Sawley; Long Eaton. 
T3. Near Calke Abbey, Purchas, J.B. Near Willington, by the road-side, 
Rept. F. d: F. Pools, Stanton-by-Bridge, Painter, Natt. 
L. minor Ll. Duckweed. 
Native. Bb. Ponds, ditches, canals. Common. A. June-July. 
First record, Glover, 1829. 
General and abundant. ‘ Ponds up to 400 yards,” Baker, J.B. 
L. gibba L. Top. Bot. ‘‘ Howitt cat.” 
Native. EG. Ponds, ditches. Rare. A. July-Aug. 
First noted, Smith MSS., 1881; record, Rept. F. d F., 1881. 
C. Loscoe. 
Tl. Large pond right of the road between Sudbury Station and the village. 
T2. Ditch between Sawley and R. Trent. 
T3. Repton, Rept. F. dé F. Drakelow, in the Trent; in a wet place by the 
footpath between Egginton and Egginton Station. 
L. polyrrhiza L. Greater Duckweed. Top. Bot., ‘‘ Howitt cat.” 
Native. E. Ponds, canals, ditches. Local. A. July. 
First record, N.H. Tutb., 1863. 
C. Canal near Mastin Moor, and near Renishaw. 
T2. Canal at Allenton; near Chaddesden and Spondon; Thrumpton Ferry. 
T3. Knowl Hills, Purchas, J.B. Calke, Bloram. R. Trent, N.H. Tuto. 
Repton, Rept. F. d F. Pond by road-side west of Willington. 
