42 REVUE BRYOLOGTQUE 



r 



serration etc.) but usually nearer pellucidum, and incurved and 



crisped when dry. Sterile. 



4. — Bracklinn Falls, Callander, Perthshire, July 1897 ; leg. 

 H. N. D. No 208. Habit and long leaves of favescens, but dark 

 green. Leaves toothed for some distance down, cells almost 

 smooth, not obscure. Leaf-base somewhat intermediate. Sterile. 





The Darran, Herefordshire, Feb. 1880; leg. Rev. A, Ley. 

 Leaves scarcely curled or incurved when dry, structure o^ pellu- 

 cidum. Capsule erect, oblong, but peristome of pellucidum. Pro- 

 bably var. erecium Ilusnot. 



6. — Achmore, KiUin, Perthshire, Mar. 1900; leg. D. Haggart. 

 Habit and leaf structure o( flavescens^ capsule not quite erect nor 

 absolutely symmetrical, but nearly so. Peristome of pellucidum. 



7. — Lochay Bridge, Killin, Perthshire, July 1897 ; leg. H. 

 N. Dixon. No 131. Almost identical with the last, but capsule prac- 

 tically erect and symmetrical. 



8. ~ Two plants collected by M"' W. Evans, (a) Penicuik, Scot- 

 land, Oct. 18G8; (b) Castle Campbell Glen, Scotland, April 1897. 

 Identical with flavescens in vegetative characters and in erect 

 symmetrical capsule, but peristome of pellucidum, 



9. — Tyndrum, Perthshire, 1898; leg. H,' N. Dixon. N** 103. 

 Identical with the last. Exact habit, colour, etc. of flavescens, but 

 peristome of iJellucidum. 



10. — Same locality ; n<* 104. Like the last but greener ; peris- 

 tome teeth purple Fed but rather paler than in pelluciduui^ espe- 

 cially above ; somewhat narrow and irregular ; vertical striii^ very 

 sHghtly developed. 



11. — Pandy Mill, Dolgclly, N. Wales, July 1901 ; log. IL N. D. 

 N** 1. Typical flavescens in vegetative characters and peristome^ 

 but capsule short, ovate, slightly inclined and asymmetrical- 

 Growing with typical flavescens, 



12. — B. flavescens type. 



To these may be added a good series of Irisli plants in the Kew 



Herbarium, collected bv D 



flavescens 



by Wilson. These agree very nearly with n«' 8 and 9 in the above 

 list. There is a marginal note on one of llie two sheets a perist. 

 denlibus vix fissis, irroc^ularibus )>, but I am not inclined to attri- 

 bute too much weight to this remark, as most of the peristomes 

 on that sheet are worn and are not in good condition. In the spe- 

 cimens I examined the teeth agreed in colour^ form and longitu- 

 dinal stpiation witli D. pellucidum, 



n has been suggested that the presence or otherwise of axillary 

 gemma? may afford a character of value. They arc very frequently 



