MOSSES AND HEPATICS OF SOUTH ABERDEEN 159 



subsequent branching of the stem, obovate, finally clavate, to 

 2*5 mm. long, almost round in transverse section or a little com- 

 pressed antically, plicate in the upper part with a contracted, 

 oblique, finely toothed mouth, of a single layer of cells throughout; 

 archegonia to 10 ; perichaetial leaves like the stem-leaves, but a 

 little larger. Fruit unknown. Male plants weaker, bearing 

 antheridia in the middle and towards the apex of the stems, 

 perigonial leaves, similar to the stem-leaves, but slightly saccate 

 at the base ; antheridia solitary, greenish-yellow, oval to spherical 

 (224 and 166 /*) on stalks of a single series of cells a quarter to 

 half as long. Gemmae common, in large masses on the apices of 

 the upper leaves, greenish when young, reddish-brown later, ellip- 

 tical to oval, 18-25 /x, generally two- rarely one-celled. 



89. Earth among schistose rocks, Glen Beag, very sparingly, st. 



The above diagnosis is largely borrowed, and that of the 

 perianth wholly taken, from the description by Herr Kaalaas (loc. 

 cit.). The Scotch plant was found growing directly upon the 

 ground and not among mosses ; the stems are shorter and greener 

 and the antical lobes of the leaves are generally a little larger than 

 in a Scandinavian specimen kindly sent to me by Herr Kaalaas, 

 but there can be no doubt as to the identity of the Scotch plant 

 which was first suggested by Mr. Macvicar, and has since been 

 fully confirmed by Herr Kaalaas himself. Though rare, it appears 

 to have a fairly wide distribution in Norway from the sea-level to 

 the Alpine region, and it has also been found by Dr. Douin near 

 Gavarnie in the Pyrenees. The plant is of interest as standing 

 on the confines of several genera, or rather as showing the 

 doubtful limits which some genera possess. I was inclined to 

 refer it when gathered to Scapania, to which, indeed, it was 

 assigned by Herr Kaalaas until the discovery of the perianth, and 

 Dr. V. Schiffner has shown (Bryologische Fragmente, xlix. p. 2) 

 that the plant may with equal, if not greater, reason be assigned 

 to Sphenolobus. It is rather closely related to S. ovatus, and 

 should perhaps be consistently placed in the same genus. It may 

 readily be distinguished from this species by the more rounded 

 commissure, the less acutely-pointed lobes, and the apparently 

 constant presence of gemmae. 



Scapania compacta (Both) Dum. 92. Craigandarroch, near 

 Ballater; Glen Clunie. — S. subalpina (Nees) Dum. 92. Glen 

 Quoich and elsewhere, fairly common. A rather flaccid form with 

 conspicuous orange-red gemmae occurred on rocks above Loch 

 Etchachan. — S. cequiloba (Schwgr.) Dum. 90. Canlochan.— 

 S. aspera Bernet. 92. Morrone Hill, Braemar. — S. nimbosa Tayl. 

 92 and 94. Sparingly among boulders between Lochs Etchachan 

 and Avon at an altitude of not less than 3000 ft. — *S. ornitho- 

 podioides (With.) Pears. 92 and 94. Sparingly with the last 

 species and Anastrophyllum Donianum. — S. dentata Dum. 92. 

 Bather common and variable on the high ground. — S. intermedia 

 (Husn.) Pears. 92. Moist decaying log, Linn of Corriemulzie, 

 well characterized. — S. undalata (L.) Dum. 92. A rather puzzling 

 series of reddish forms occurred on Lochnagar and Ben Muich 



