I 35 
(D.). Pond between Limbo Lane and E. side Thurstaston 
Hill (f.m.w.). Pond near footpath quarter-mile from Little 
Sutton Station towards Overpool (r.b.) ; therein 1899 (Dr. g.). 
Pond one mile S. of Raby (r.b.). 
Authority for Sparganium, W. H. Beeby. 
AROIDE/E. 
Arum (L.). Cuckoo-pint. 
A. maculatum (L.). Fig. 643. Cuckoo-pint. Lords and Ladies. 
Native. P. IV, V. 
Woods and hedge banks. Occasional. 
C. About Prenton Dell; Woodchurch and Arrowe Park; 
Neston, near the shore ; Mollington ; Shotwick Dale to the 
Marsh. 
Acorns. Sweet Flag. 
A. Calamus (L.). Fig. 644. Sweet Flag. Colonist. P. VI, VII. 
Lakes and ponds. Rare. 
L. In the lake at Croxteth (Miss g.). Calcotts Pond, Green 
Bank (H.G.,jun.). 
C. S. U. Canal, from Ellesmere Port to Chester, at intervals 
(LorddeT.; &c.). 
LEMNACEiE. 
Lemna (L.). Duckweed. 
L. trisulca ( L .). Fig. 645. Ivy-leaved Duckweed. Native. A. 
VI. 
Ponds and ditches. Common. 
L. minor (L.). Fig. 646. Lesser Duckweed. Native. A. VI, VII. 
Ponds and ditches. Very common. 
L. gibba (L.). Fig. 647. Gibbous Duckweed. Native. A. 
VI-VIII. 
On stagnant water. Occasional. 
C. Pond one mile N. of Willaston. 
L. polyrrhiza (L.). Fig. 648. Greater Duckweed. Native. A. 
Ponds and ditches. Occasional. 
L. Near Clubmoor (D.). Broad Green and Green Bank 
(j.h.l.). Ponds between Lydiate Hall and River Alt (t.b.). 
C. Frodsham Marsh (j.f.r.). Seacombe (j.h.l.). Pond 
quarter mile N. of Great Mollington. 1900, Pond quarter mile 
S. of Hadlow Road Station (Miss w.). 
Note. — This plant does not flower in Britain. 
