1913-14.] BOTANICAL SOCIETY OF EDINBURGH 269 



(1) Early flowering perennials, -which by reason of their 

 storage organs in the form of bulbs, tubers, or rhizomes, are 

 able to flower in early spring, and take advantage of a 

 larger share of light before they become shaded by the 

 summer foliage of the trees, are represented by Ra n u nculus 

 Ficaria, Linn.; Chrysosplenvu/m oppositi folium, Linn.: 

 and Mercwrialis perennis, Linn. Of the same type, but 

 flowering when spring is more advanced, are Scilla n litems, 

 Sm., and Allium u/rsiw/u/m, Linn. 



(2) Broad and thin-leaved herbaceous plants, usually 

 with well-developed axis and long internodes, are present 

 in great abundance, indicating plainly by their habit of 

 growth that whatever the diificulties may be with which 

 they have to contend, these at least do not include deficiency 

 of moisture or undue exposure to the blustering winds. 

 Among these plants are such species as ScrophuLwria 

 nodosa, Linn. ; Circaea lutetiana. Linn. ; Stacliys sylvatica, 

 Linn. ; and many others whose names need not be again 

 repeated. 



(3) Twining and scrambling forms, less rich in species 

 than the last-named set, but numerous in individual plants, 

 are represented by Hedera, Lonicera, and Rubus. 



5. Fresh-Water Aquatic*. 



The group of fresh-water aquatics is the most poorly 

 represented among the six ecological sections into which 

 the plants of the area have been divided. Xot only are 

 sheets of fresh water very few, but where they do exist 

 the number of aquatic species found in them is exceedino-ly 

 limited. Nevertheless a few typical and contrastino- forms 

 are to be seen in the moorland lochan, mountain tarns, and 

 lowland artificial pond which constitute almost the only 

 available habitats for aquatic plants. 



Stronyaraig Lochan is a small natural sheet of water 

 situated on the right side of the Inverchaolain Glen, at an 

 elevation of about 400 feet. It is very shallow, and is. 

 frequently partially dried up in summer. The surrounding 

 vegetation is that of the Calluna Moor. Here are to be 

 found Glyceria fluitans, Br., with long floating leaves, and 

 Peplis Portula, Linn., and Ayyiwm inundatum. Reichb., 

 both submerged. The latter species, with its finely divided 



