ON THE DISTRIBUTION OF HYPNUM SALEBROSUM. 85 



Wilson, and referred to H 



Wilson 



lutescens. It is interesting to note that Mr. 

 observed the difference between H. jSlildeanum and H. salebrosum, 

 Hoffm., or that it had been pointed out to him by Dr. Spruce, 

 since the abbreviation Hoffm. is doubly underlined by him on Dr. 

 Spruce's specimens, and also on a barren specimen from Cork 

 received from Mr. I. Carroll, and carefully distinguished, as "the 

 first sent/' from others afterwards sent by Mr. Carroll, which are 

 undoubtedly H. Mildeanum. The specimen labelled "the first 

 sent" is unfortunately not in fruit, and is so fragmentary that I 

 hesitate to pronounce whether it be H. salebrosum, Hoffm., or H. 

 velutinum, especially as the apex of the leaf is not so elongated as 

 in typical H. salebrosum. but more nearly resemble that of if. 



vehttinum. 



ccurs in Mr. Wilson' 



H. Mildeanum and H 



further confirms the view that Wilson recognised a difference 

 between them. The note is as follows:—" T. Drummond's Forfar 

 specimens approach to H. campestre in aspect, but have a different 

 seta. The seta of H. salebrosum, from Southport and Ainsdale, 

 when viewed by very oblique light of the sun, shows obscure and 

 scattered papilla, but these are less evident than in II. campestre 

 (from Bruch), and there is always a glossiness and more purplish 



din 



H 



evidently phcate when dry."* 



A specimen from Mr. Mitten, labelled by himself ' 

 {H. plumosum, Br. & Schpr.), on the roots of beech trees in the 

 ashen plantation, Hurstpierpoint, Dec, 1846," is evidently a broad- 

 leaved form of H. Mildeanum. This is probably the plant alluded 

 to by Mr. Lees in i Journ. Bot.,' p. 360. _ 



In Wilson's herbarium there are numerous specimens of H. 

 ylareosum, from Helk's Wood, Ingleton, but none of H. salebrosum, 

 Hoffm. In the British herbarium at the British Museum there 

 occur specimens of the true plant from Highbridgehall, Rox- 

 burghshire, A. Brotherston, April 1st, 1875 ; and between Market 

 Easen and Tealby, F. A. Lees, 1877. 



The distribution of this species in Britain, smce it is evident 

 that Mr. Lees' plant and Dr. Spruce's are identical, will be as 

 follows :— 



Near Forfar, Drummond, 1824 (on Dr. Spruce's authority). 



Near Kirkham Abbey, E. Spruce, Nov., 1846 ! 



Highbridgehall, Roxburghshire, A. Brotherston, April, 1875! 



Ledsham Park, West Riding, Yorkshire, 1876 ! 



Market Rasen, Lincolnshire, F. A. Lees, 1877! 



From the dates above given, it will be observed that altliougli 

 found fruiting in Nov., it was found in Forfarshire fruiting in 

 spring. The same difference in time of fruiting is noticeable in 



u * A Forfarshire specimen from Drummond of H. salebrosum in the , Ke w 

 herbarium has a rough fruitstalk, from which it would appear that his ^amen 

 Brew intermixed with H. rutabulum. 



