170 THE FKESH-WATKR LOCHS OF SCOTLAND 
NYMPHS ACEyE 
Castalia speciosa, Salisb., I., II., IV., V., VI., VII. Very common 
and abundant, especially where the water is not very peaty. 
Castalia speciosa, Salisb., var. minor, DC, I., IV. In mountain lochs. 
Probably a depauperated form of C. speciosa. 
Nymphaea lutea, L., II., IV., V., VI., VII. Common and abundant, 
often overgrowing large areas, but seldom seen in the hill lochs. 
Nymphaea lutea, Z., var. intermedia, Ledeb., V., VII. Grows with 
the larger form and sometimes alone, chiefly in the lower 
portion of Loch Ken, where it is very abundant. Rare in 
Area VII. 
Nymphaea pumila, Hoffm., I., IV. Not common ; chiefly at Lochs 
Meiklie, Ken, and Stroan. 
CRUCIFER^ 
Radicula officinalis. Groves, II., III., V., VI., VII. Seldom 
abundant at the lakes. 
Radicula palustris, Mocnch, V., VI., VII. Occurring sporadically 
about the shores of lowland lakes. 
Radicula pinnata, AlmicJi, V. Distribution very restricted. 
Cardamine pratensis, L., I., II., III., IV., V., VI., VII. Almost 
ubiquitous, but frequently sparse. A form which multiplies 
vegetatively by buds, that arise from the base of the leaflets, 
occurs at Loch Gelly. 
Subularia aquatica, Z., I., a few plants occasionally observed. 
IV., v., VI., often very abundant. 
VIOLACEyE 
Viola palustris, L. L, IL, III, only as scattered specimens upon 
the shores of lakes. IV., V., VL, VII., frequently abundant in 
lowland situations. 
ELATINACE^ 
Elatine hexandra, DC, VI. Very abundant in places. Two 
forms occur : — When submersed the plants are of a delicate 
texture, pale green, with elongated leaves, and seldom flowering. 
When exposed on mud or sand they are much more robust, 
dark reddish green, with short leaves, and flower profusely. 
In this condition the plants much resemble small specimens of 
Peplis Portula in both form and colour. 
CARYOPHYLLACEJE 
Sagina nodosa, Fenzl, VII. In matted growth on sandy or stony 
shores ; scarce. 
