418 On the Mosses found in the 



arising from nearly the same point of the stem. Buxbaumia is 

 mentioned upon the authority of Mr Jackson, in Hooker's Flora, 

 Vol. ii., as growing near Aberdeen, but I have never had the plea- 

 sure of gathering it. Fontinalis antipyretica is very abundant in 

 slow running streams. It is, however, rarely found here in fruit. 

 The brilliant Hookeria lucens is plentiful in the locality mentioned. 

 In Brit. Flora, Vol. ii. p. 74, it is mentioned that the stems sometimes 

 reach a length of four inches. In this part of the country they never 

 exceed two inches. Hypnum catenulatum is the rarest of the species 

 enumerated. The list is, I suspect, rather deficient ; many species 

 of Hypnum, without doubt, have not yet been detected. Several of 

 them, especially H. loreum, triquetrum, &c. afford a soil and shelter 

 favourable to the growth of the elegant Goodyera repens, so plenti- 

 ful in nearly all the old fir woods in the neighbourhood of Aberdeen. * 

 When engaged in examining the species of the genus Hypnum, 

 I have frequently observed that there is a very evident difference 

 in the form, and even in the cellular structure, of the stem leaves, 

 and of the perichsetial leaves. Might not this difference be assumed 

 as a specific character in some cases ? I leave it to some more ex- 

 perienced muscologist to follow out this suggestion. 



List of Hepaticce found near Aberdeen. 



Marchantia polymorpha. Abundant. 



hemisphserica. Banks of Don, &c. 



Jungermannia asplenioides. Abundant in several places. 

 cordifolia. Banks of Don. 



-- crenulata. With the former. 



— inflata. Corbie Den at Maryculter. 



— excisa. Banks of Don. 



— ventricosa. Den of Rubislaw. 



— bicuspidata. Frequent. 



— pusilla. Banks of Don and other places. 



— umbrosa. Den of Rubislaw. 



— undulata. Moist rocks upon the coast. 



— albicans. Bay of Nigg. 



* Goodyera occurs at the following places near Aberdeen : In a fir wood at 

 Drumoak, at the thirteenth milestone, on the Deeside road ; at Hazelhead, 

 Denmore, Parkhill, in a fir wood opposite Fintray House, where Linnaea bore- 

 alis also grows ; at Loch of Skene, in two different woods. The firs at these 

 places are from forty to sixty years old. The plant is also springing up in a wood 

 at Middleton, three miles up Deeside. This wood does not much exceed twenty 

 years. 



