Prof. Balfour on the Flora of the Cumhrae Islands. 69 



Racomitrium lanugi- 



nosum. 



caiiescL'us. 



acic'ulaie. 



Ptychomitrium poly- 



phylluiu. 

 Physcomitnum erice- 



torum. 

 Entosthodon Temple- 



toni. 

 Splachnum ampulla- 



ceum. 

 Bartramia fontana. 



poiniforuiis. 



Bryum capillare. 



carucum. 



Mniuiu jjunctatum. 



undulatum. 



hornum. 



1 rostratum. 



Atrichum luidulatmn. 

 Pogonatuin nanuni. 



alpiiuim. 



Polytrichum coiumune. 

 Fontinalis antij)yrctiea. 

 Neckcra coinjilanata. 

 Pterygoi)li\ lliuu lucens. 

 Pyhiisea polyantha. 

 Ilomalothecium seri- 

 ceum. 



Thamnium alopecuvum. cuspidatuni 



Tlmidium tamariscinum. scorpioides. 



Eurliynchium longi- 



rostre. 



Stokesii. 



Bracliythecium ruta- 



buliim. 



vdutinum. 



])opulcum. 



Ijlumosum. 



Ilypnum counnutatum. 

 revolvens. 



Hylocoiuniuin spleu- 

 deus. 



tiiquetrum. 



loreum. 



squarrosum. 



PLigiothccium undula- 

 tum. 



Schreberi. 



fluitans. 



purum. 



cupressiforme. 



Jungermaunia aspleni- 

 oides. 



tamarisci. 



furcata. 



The following list of Lichens, collected on the Cumbraes, has been 

 prepared by Mr. Macmillan : — 



Nephroma resupinata 



(in fruit). 

 Parmelia caperata 



(barren). 



I)ulverulenta. 



parietiua. 



• stellaris. 



Sticta scrobieulata 



(ban-en). 

 Borrera tenella. 

 Placodium ])luinbeum. 

 Sphicrophoron coral- 



loides (in fruit). 



compressum. 



Parmelia glomulifera 



(barren). 



Parmelia perlata (barren). Squamaria murorum. 

 Cladonia rangiferina. Ramalina soopidorum. 



iincialis. 



Roccella tinctoria. 

 Parmelia conspersa (in 



fruit). 

 Peltidea eaiiina. 



horizontalis. 



Scyphophorus alcicor- 



nis. 

 Ramalina fraxinea. 



fastigiata. 



Parmelia sa.xatilis. 

 Lecanora tartarea. 

 Parmelia aquila (in 



fruit). 

 Everuia prunastri. 

 Usnea florida. 



Lecidea geographica. 



sulphuiea. 



Lecanora atra. 



Sticta pulmonaria 

 (barren). 



Parmelia olivacea. 



Variolaria velata. 



Lecanora parella. 



Collema lacerum. 



Sticta fuliginosa (barren). 



Squamaria affinis. 



Parmelia perforata (bar- 

 ren). 



Stereocaulon paschale (in 

 fruit). 



ouiphalode.s (in 

 fruit). 



Mr. Macmillan remarked, " In the above list of the most conspi- 

 cuous Lichens of these islands, it will be observed that several species 

 occur which are usually found only in the depths of shady woods, in 

 situations far inland. The Parmelia (/lomnli/era, Sticta scrobieulata, 

 Placoflium pluniljeinn. Nephroma resiqnnata, and Sticta fuUyinosa, 

 are almost peculiar to the extensive forests of mountainous regions 

 where there is a great deal of moisture and shade ; and hence their 

 occurrence, not merely as stray or isolated individuals, for the Lichens 

 are sometimes very erratic in their choice of habitats, but in con- 

 siderable quantities on islands almost entirely destitute of wood and 

 very much exposed, is a somewhat singular circumstance. It is also 

 curious to notice in the list no less than eight species, which we 

 should scarcely expect beforehand to find, insomuch as they belong 



