62 The Scottish Naturalist. 



a British station in which it may be really gathered at the 

 present moment. Another of Mr. Paterson's mosses was one 

 which he had gathered at the Trossachs last year. The specimen 

 sent was a very small one, but remarkably characteristic in 

 appearance, and quite perfect, having three drooping capsules 

 on exceedingly short fruit-stalks not more than i-4th of an inch 

 in length. I have little or no hesitation in saying that this is a 

 new British species, viz., Hypnu7}i Lorentzianum of Molendo. It 

 agrees well with the description of that species. Neither 

 Molendo nor Schimper appear to have seen the male flowers, 

 though the latter ranks the species in the subgenus Hetero- 

 J)hy/lii?ji, along with H. Haldanea^ium, and If. ncDiorosinn^ 

 which are both monoicous. In Mr. Paterson's specimen there 

 were abundance of male flowers on the same stems as the female 

 flowers. Schimper considers that this species might be made 

 the type of a new subgenus, — a remark with which those who 

 know this very peculiar Hypmun will at once agree. In the 

 few extremely large inflated cells at the base of the leaf, one is 

 instantly reminded of some sections of the South American 

 genus Sejnatophylluju. 



Hitherto Great Britain has been without a representative of 

 Coscinodon, a genus uniting some of the characters of Griimnia 

 and Ptychoinitrinj?i, and composed of only four species, which are 

 equally divided between Europe and North America, where they 

 are very rare. This deficiency in the Moss-Flora of Great 

 Britain has now been removed by j\Ir. Paterson's discovery in 

 Argyleshire of a very interesting and entirely new Cosci7iodo?2. 

 It is abundantly distinct. I propose to name it Coscifiodon 

 Pater soni^ in honour of its acute discoverer. 



Coscinodon Patersoni, n. sp. 



Monoicous. Tufts compact, grey with a yellowish-brown 

 tinge. 8te7ns about }^ inch long, dichotomously branched, 

 branches rather unequal. Leaves slightly plicate at the base 

 strongly plicate along the verve in the upper half without the 

 deep sulci on either side so characteristic of C. pulviuatus. 

 Lower leaves oblong-lanceolate, concave, muticous, obtuse ; up})er 

 leaves obtuse, with densely and shortly toothed hairi:)oints, which 

 are broad, sometimes pale yellow at the base, straight or 

 connivent, and often longer than the leaf; pericha'tial leaves 

 more tender, larger, more evidently pHcate throughout, very 

 concave, subcon volute, with hairpoints very broad at the base 



