—21 — 



with Didymodon rigidum; and it is to this that the described 

 'gemrose' belong." 



Allowing, therefore, the modifications suggested above, that 

 author's original description, subjoined, holds for this plant 



Some weeks ago I received from Mrs Britton a specimen of 

 Gr^'mt7iia ieretmervis coWecieA in Austrian Tyrol by Dr. Burchard. 

 That plant, though coming from the first region cited in Laubra. 

 p. 718, does not agree so well with the author's description, nor 



Explanation of Figures. Grimmia teretinervis Limpr. Fig. i. 

 A plant. X2^. Fi?. 2. A leaf, X30. Figs. i-6. Enlarged cells fiom apex, 

 middle, and base of leaf. Figs. 7-13 Cross-sections of; leaves. Fig. 14. En- 

 larged leaf of Grimmia Olneyi Figs. 15-20 Cross-sections of leaves of 

 Grimmia campestris Burchell. Fig. 21. Cross-section of a leaf of Gr//«»«»a 

 Ol?ieyi &ho\& middle. 



