28 



The Scottish Naturalist. 



large dimensions. The fructification is also common and profuse. A 

 species is usually associated with it in almost equal abundance 

 elsewhere, which resembles it so closely in appearance that it got 

 the old name of Squamaria offinis, now known as Pannaria 

 rubiginosa ; though at Inveraray I found only a few small ill- 

 developed specimens on the same trees with the P. plumbea. 

 The curious Amphiloma lanuginosum, which affects the 

 shady side of rocks in subalpine localities, covering them with its 

 white mealy thallus, resting upon a bluish flocculent substratum, 

 grows in the oak woods of Dalhingan and on roadside banks at 

 Kilean. The fruit is altogether unknown. 



Of the Peltigerei, Nephromium lusitanicum is frequent 

 on mossy rocks, trees, and walls, with its curious reddish-brown 

 apothecia, adnate to the lower margin of the thallus. Nothing 

 can be more lovely than the large silvery grey patches of Peltigera 

 canina, the common Dog Lichen, beautifully rounded and 

 scolloped, as it covers some old wall, or variegates the mossy 

 sward by the side of some woodland path. I have never seen it 

 so large or so beautiful elsewhere as in this locality. I have not 

 met with P. malacea, which the Rev. Mr. Crombie discovered 

 at Inveraray in 1873. P. polydactyla, distinguished by its 

 many fertile finger-like lobes rising above the general level of the 

 thallus, and marked with longitudinal nail-shaped apothecia, with 

 their edges turned back, is common on moist banks j and I have 

 no doubt that P. aphthosa may also be found in the upland 

 dales, though I have failed to see any trace of it. Probably more 

 common and abundant than any other lichen on the trees at 

 Inveraray is the Platysma glaucum. It is remarkably luxuriant, 

 covering almost all the trees in the High Preserves with its crisp 

 curly lobes, and imparting to them a very picturesque appearance. 



The Ramalodei are unaccountably scarce at Inveraray, con- 

 sidering the myriad trees of the pine-tribe, upon which this order 

 loves specially to luxuriate, that grow in the neighbourhood in open 

 and exposed places. I gathered only a few specimens of Evernia 

 prunastri and of Ramalina fastigiata ; lichens that else- 

 where make almost every tree in a pine wood shaggy with their 

 hoary tufts. The dark beard of Alectoria jubata, equally 

 common and picturesque in northern pine woods, does not, so far 

 as I have observed, grow in the woods of Inveraray, the very woods 

 that one would naturally suppose it would love most to frequent. 



