NOTES ON PERTHSHIRE PLANTS. 149 



watershed north of Ben Lawers. We have scarcely any so strong 





and well- developed in our series of Clova specimens. The youn 

 leaves are clothed with the fine silky pubescence of Lapponum, but 

 they are quickly glabrescent. — S. herbaem X nigricans (S. Moont 

 Lond. Cat.) ? A very interesting plant was met with by the Rev. 

 E. S. and Mrs. Marshall and ourselves, on Meall-na-Saone, with a 

 creeping habit and strong woody stem; luckily in fruit. ^ Our first 

 idea on gathering it, that it was S. herbacea x nigricans, is probably 

 right; Dr. F. B. White assented to this as most likely, on 

 specimens sent him by Mr. Marshall ; and more deliberate exami- 

 nation confirms this opinion. — *S. herbacea X reticulata (S. onychio- 

 phylla Ands.). Growing on rocks on Meall-na-Saone, already 

 known as rich in hybrid willows, this creeping plant puzzled us 

 not a little. It had much the habit and appearance of S. herbacea 

 X lanata, which was growing close by; but as Dr. White pointed 

 out, to whom specimens were sent by the Rev. E. S. Marshall, in 

 whose company we were at the time of gathering it, the capsules 

 are pubescent, and it could not be that hybrid. Dr. White thought 

 it might be S. Moorei, on the side of herbacea. We have, however, 

 a plant in cultivation, from Clova, which, though it has not fruited 

 yet, we have no doubt is a hybrid between S. herbacea and 6 T . reticu- 

 lata; and to this we now put the Meall-na-Saone plant. 



Tojieldia palustris Huds., Juncus bighorns L., and Luzula spicata 

 DC, were noted on the N. slopes of Meall Garbh ; and the two 



former, together with Juncus triglumis L., J. castaneus Sm,, and J. 



trifidus L., were seen on mountains near Fortingal, N. of R. Lyon. 

 Potamogeton rufescens Schrad., still abounds in a tarn near the 

 summit of Nan Tarmachan, spreading by stolons and never 

 flowering ; altitude about 3000 ft. 



latifoli 



Killin ; and by 



an altitude 01 aoout zzau n>. ueai vjicug vauwu, 

 itself near Fortingal, and Culdamore. 



Carex dioica L., C. vi<jida Good., C. aquatilis (f. minor), and C. 

 ustulata Wahl,, on the mountains near Fortingal, N. of R. Lyon. 

 The latter was in small quantity along one watercourse, more 

 plentiful along another, but not at all easy to see, owing to the fact 

 that the female spikets were concolorous with the partially denuded 

 soil on which it grew. This new station is many miles west of that 

 on Ben Heasgarnich, and at a lower altitude ; we had not the 

 means at hand of computing this with accuracy, but have reckoned 

 it at about 1800 ft. This choice little sedge prefers a moderately 

 steep slope over which water gently trickles and oozes, and where 

 other herbage is very thin ; the sort of ground in fact that Jumus 

 bi</lumis (which grew with it remarkably fine) loves to occupy. 

 It is not impossible that this may have been Don's original 

 locality ; though the probabilities are the other way, as anything 

 N. of the Lyon could hardly be called " Ben Lawers." We spent 

 a good part of two days rambling over the watersheds and conies 

 just north of M. Garbh and Ben Lawers, and were struck with the 

 " grassiness " of the whole mountain side, with comparatively few 

 spots congenial to a sedge that objects to jostle in a crowd. — C. 



