JL.JDJDJHJST1DJL. ^USTID OODRIR-IGi-IKlIISriD-A.. 



P. 34. Catharinea undulata var. Haussknechtii. — The opinion 

 expressed in the note on the above plant has been strongly 

 confirmed by the examination of a plant which I gathered in 1895,. 

 when the note in question was already in print. The plant 

 referred to was growing in sandy dibris in a stream below Scale 

 Force, Buttermere, and at first sight presented no difference from 

 the ordinary form of C. undulata growing in such habitats. On 

 examination, however, the young fruits were found to be, in 

 several instances, aggregate, to the number of 2-3 in a peri- 

 chaetium, though in most cases they were single. The antheridia 

 and archegonia were in the same flower in all the stems I 

 examined, though it was not easy to say whether the inflorescence- 

 should be termed paroicous or synoicous ; and in several cases the 

 stem was just beginning to be prolonged, beyond the inflorescence, 

 in such a way as to render the seta lateral. Thus in all essential 

 respects the mode of fruiting was that of C. Haussknechtii Broth. 

 On the other hand the plants, though somewhat slender, were by 

 no means unusually so for C. undulata ; the leaves were quite as 

 tapering and acute as usual in that species ; the capsules, though 

 very young, showed every appearance of becoming curved as 

 strongly as in the typical form ; in short there was absolutely 

 nothing to separate the plant from C. undulata except the 

 paroicous or synoicous inflorescence. The aggregate setae, as 

 has been shown, occur in forms of that species ; while the 

 prolongation of the axis is only what normally takes place in the 

 case of the male plant. I cannot feel the slightest doubt that in 

 " C. Haussknechtii Broth." we have a simple variety or sport 

 of C. undulata having antheridia and archegonia mixed together,, 

 instead of the normal male (and subsequently fertile) plant. 



P. 113, I. 12. — Yorflagella? r&sAflagella. 



P. 120, 1. 27.— For opus cit. read op. cit. 



P. 142, 1. 7 from bottom. — For Rhacomitrium read Grimmia.- 



P. 168, top.— Key to Pottia. 



/Lid very minute, persistent 2 



\Lid larger, deciduous J 



/Capsule sub-globose ; calyptra rough at apex 1. recta 



\ Capsule elliptic ; calyptra smooth 2, bryoides 



/Peristome absent, or rudimentary 4 



3 \ Peristome present 11 



