1909-10.] Flora of Scottish Lakes. 117 



hamulata is abundant, sometimes with floating rosettes of leaves. ISuphar 

 pumila is abundant in 8 to 10 feet of water on the south-west side, its semi- 

 transparent submersed leaves being copiously produced at such depths. 

 Juncus fluitans is extremely abundant in the shallow water at the north- 

 west side. Scirpus lacustris (fig. 23) is very abundant, producing at depths 

 of from 3 to 5 feet the grass-like submersed leaves in great luxuriance. 

 Carum verticillatum, a characteristic marsh plant of this district, is 

 abundant (fig. 27). Hypericum elodes (fig. 26) is scarce; Hydrocotyle vul- 

 garis, Epilobium tetragonum, and Galium palustre occur on marshy ground. 

 Nitella opaca, Chara fragilis, var. delicatula, and Ranunculus aquatilis occur, 

 but none of them is abundant. Besides Batrachospermum, the filamentous 

 Algge were scarce ; neither were the littoral rocks and banks conspicuous 

 with Bryophytes, a few of the common forms only being observed to be 

 abundant. [On boulders on the east side of the loch the rare moss 

 Grimmia commutata may be found. — J. M'A.]. — Juncus fluitans and Scirpus 

 fluitans, both so plentiful here, are much alike in the barren state and easil}^ 

 confounded, but frequentl}^ they can be distinguished at a glance when 

 growing, because the Juncus is usually slightl}^ reddish, whilst the Scirpus 

 is always bright green, without a trace of red. 



Loch Whinyeon is somewhat circular in outline, and about h mile 

 in diameter. It occupies an exposed position over 700 feet above sea 

 level, 3 miles north from Gatehouse-of-Fleet. The water, which has a 

 maximum depth of 33 feet, is clear, and but very slightl}^ peaty. The 

 shore, which is everywhere stony or rocky, consists chiefly of broken shale 

 (Upper Silurian), the beds of which are frequently ver\' highly inclined. 

 The flora of the shore as well as of the water is extremely poor. The 

 most interesting plants noticed were Alisma ranunculoides, in small 

 quantity, but luxuriant, and a very dwarf form of Chara contraria (p. 90), 

 of which the Messrs Groves, to whom specimens were submitted, write — 

 " We have no specimens exactly like it.'" Rhynchospora alba grows on 

 boggy patches of the shore, to which it has evidently strayed from the 

 adjoining moor, where, in places, it is the dominant plant. The following 

 Bryophytes were abundant upon the shore : — Sphagnum subsecundum and 

 its var. contortum, Mnium punctatum, Dichodontium pellucidum, Bryum 

 alpinum, B. bimum, Dicranella squarrosa, Trichostomum tortuosum, Hypnum 

 commutatum, H. revolvens, H. scorpioides, H. cuspidatum, H. cordifoHum, H. 

 cupressiforme, Grimmia apocarpa, Rhacomitrium aciculare, R. lanuginosum, 

 Fissidens adiantoides, Jungermannia bantriensis, J. pumila, Scapania undulata, 

 Nardia emarginata and its var. aquatica. The other plants noticed were 

 not in dense, wide-spreading associations as frequently happens, but more or 



