214 TKANSACTIONS OF THE 



nitidiusculus, fruticulose divaricato-multifidus, laciniis teretibus vel 

 tereti-compressis, dicliotome cervicorni-divisis (latit. -2 -'4 mm.), 

 subtus concolor vel interdum (basi) pallidor; medulla alba (K 

 flavens dein interdum et serius aurantiaco-rubens). Sterilis. 

 Terricola 1 



The lacinise are very rarely seen in an expanded condition. 

 The apices of the lacinise, where they fasten to small pebbles, 

 are the only points expanded, and the under surface is then seen 

 pale or occasionally brown and radiculose, the radicles being 

 generally concolorous. The length of a stem with its branches 

 is half an inch or less, at least in the specimens seen. This 

 lichen seems closely allied to P. molliuscula. 



Parmelia synestia (Stn.), sp. nov. 



Another lichen very similar to the preceding has been sent 

 by Mr. J. H. M'Lea from " Cave Mountain," and detected on 

 " Mossy Stones." 



Thallus pallide flavescens stenophyllus, multifido- et divaricato- 

 laciniatus, laciniis convexis vel incurvis et etiam convolutis 

 angustis (latit. '3 - 1 "2 mm.), subtus nigris vel nigricantibus et 

 nigro-rhizinosis, apice obtusis bi- vel trifidis ; apothecia fusca 

 mediocriaj sporse Snse, -007 — '01 x -0055 — -0065 mm., Medulla 

 K flavens dein cito intense rubens vel sanguinea. 



As the spores are those of P. conspersa, this lichen is excluded 

 from association with P. sinuosa: its colour beneath, as well as 

 the radicles and narrower lacinise, forbid identification with P. 

 congruens. The smallest laciniaa are never terete nor concolorous 

 beneath. 



It may be a form of P. constrictans (Nyl.), but the description 

 of this given in Journ. of Botany, No. 157, p. 19, is quite in- 

 adequate for purposes of discrimination. 



The species of the Parmelia of the stirps, P. conspersa, are very 

 plentiful in South Africa, and they shade off almost indefinitely 

 into one another. How far lichenologists are warranted in split- 

 ting up forms and elevating them into the rank of species, is a 

 question for future consideration. Meanwhile a record of such 

 forms may prove useful. 



Parmelia phseophana (Stn.), sp. nov. 



Thallus pallide ochro-leucus vel albido-flavescens vel pallide 

 virescens (K flavescens dein fuscescens), Isevis, nitidiusculus (latit. 

 3-6-pollicaris), laciniato-divisus, laciniis planis marginibus sinuatis, 



