5 Proceedings of the Royal Society of Edinburgh. [Sess, 



Ranunculus sceleratus, L. VII. On muddy shores, but very scarce. 



Ranunculus Lingua, L. V., VII. On marshy ground about lowland 

 lochs ; restricted in distribution, but abundant where it does occur. 



Ranunculus Flammula, L. " I., II., III. Abundant." IV., V., VI., VII. 

 Normal forms are abundant nearly everywhere below 1000 feet 

 above sea level. 



Ranunculus scoticus, Marsh. "I. Abundant about the shores of lochs 

 over 1000 feet above sea." IV. Occurs at some of the hill lochs. 



Ranunculus Flammula, L. A small prostrate form rooting profusely 

 at the nodes, similar to the var. pseudo-reptans but larger, is sometimes 

 found upon the stony or sandy shores of lochs in all the Areas, but 

 is especially abundant at Loch Ken (figs. 39 and 40). 



Ranunculus Flannnula, L., var. pseudo-reptans, Byrne. VII. A very 

 small prostrate plant, somewhat resembling the true R. reptans. 

 Occasionally found on exposed shores. 



Ranunculus reptans, L. VII. Perhaps another district form of R. 

 Flammula. It occurs on flat, exposed, sandy places that are either 

 bare or covered with short herbage in various spots all around 

 Loch Leven. It is also abundant at Carriston Reservoir (fig. 94), 

 and occurs sparingly at the reservoirs on the Lomond Hills. The 

 filiform stem usually has from 3 to 5 vascular bundles in the lowest 

 internode, but occasionally as many as 12 may be found. The 

 smallest forms of the var. pseudo-reptans ha\'e thicker stems contain- 

 ing more vascular bundles which are also better developed. The dwai'f 

 prostrate growth assumed by this plant is also exhibited by other plants 

 on the exposed shores of Loch Leven, — for example, Juncus acuti- 

 florus, J. bufonius, Equisetum arvense, E. palustre, Carex hirta, etc. 



Ranunculus Flammula, L., var. natans, Pers. IV., VII. I have found 

 two distinct forms of this interesting variety. (1) In Area VII., a 

 floating form which is abundant at the margin of peaty pools about 

 Morton Lochs, Tents Muir. This is a rather strong, wiry plant 2 or 3 

 feet long, having leaves somewhat thinner in texture than those of the 

 terrestrial type, but by no means flaccid ; it otherwise resembles the 

 weak flaccid form described below. This is probably the exact form 

 described by Persoon* and Lamarck, f (2) In Area IV., a sub- 



* "Ranunculus 



2. Flammula 



.... 7. natans, fol. inferiorib. ovatis integris, superiorib. linearibus. In aquis 

 prope Montmorency et in Barbaria. Vid. Lam. Enc. bot. 6. p. 98-99." {Synopsis 

 Plantarum, . . . . C. H. Persoon, vol. ii. (1807), p. 102.) 



t "On trouve dans I'etang de Montmorency une variete tres-voisine de celle-la, 



