The Scottish Naturalist. 121 



This form may meanwhile hold the name CI. spicata (Strn.) 



Under CI. furcata, I possess several curious forms from Mr. 

 M 'Andrew, all of whose reactions are K — . C — . 



CI. furcata * CI. diffissa. 



Phyllocladia basalia mediocriavel parva, crebriuscula. Podetia 

 basi simplicia, rigida, erecta, crassiuscnla, (1-2*5) cm - a ^ ta > cart i- 

 lagineo-corticata, interdum apicem versus nonnihil furfuracea, 

 glauco-vel spadiceo-virentia, acute et subdichotome ramosa, 

 ramis subfastigiatis ; axillae perviae, ramorum apices pervii infundi- 

 buliformes; apothecia fusca, primum planiuscula, dein convexa, 

 mediocria (latit. circiter -5 mm.), interdum congesta. Coll. 

 M'A. 90. 



This lichen, owing to the pervious axillae and open infundibuli- 

 form apices, can be associated only with CI. furcata. It has, how- 

 ever, entirely the habit of a short rigid CI. gracilis, more especially 

 as the infundibuliform apices present very much the appearance 

 of scyphi with their coronae of apothecia. 



Cladonia arborca sp. n. 



Phyllocladia basalia pauca laciniata. Podetia erecta, infra 

 simplicia vel rarissime semel divisa, robusta, brevia (alt. -5-1 poll.) 

 superne incrassata, laevigata, esquamulosa vel basi squamulis 

 parvis, paucis interdum vestita, scyphifera ; scyphi irregulares, 

 margine radiato-ramosi, ramis fastigiatis et irregulariter ramulosis, 

 saepe repetito-ramulosis apicibus infundibuliformibus et fructiferis ; 

 apothecia fusca mediocria. 



Ad terram Lochar Moss prope Dumfries a cl. J. M'Andrew 

 lecta (No. 113). 



This lichen also has much the aspect of a state of Cl. gracilis 

 but I fear all the cups are perforated as in the preceding, at 

 least the secondary ones are so. It is certainly a very singular 

 form. 

 Cladonia furcata * Cl. contexta (Strn.). 



Podetia robusta, ramosa axillis perviis, hinc inde rimata, pallida 

 vel fuscescenti-pallida. 



Similis Cl. furcatce sed apotheciis majoribus (latit. '6-i'2 mm.) 

 fuscis, sporis longioribus, , oi2- , o2i x , oo3- , oo35 mm. Supra 

 Bennan prope New Galloway (No. 29). 



Cladonia furcata * Cl. coin mixta. 



