330 BRYACE/£. 



17. Bryum paUescens Schleich. (Tab. XLIV. F.)- 



Usually in dense tutts, stems mostly short, f-2 inches, with 

 slender innovations ; yellowish green, tomentose below. Upper 

 leaves forming a comal tuft, ovate, or ovate-lanceolate, acuminate , 

 hardly decurrent, rather small, slightly twisted when dry, margin 

 narrowly recurved, nerve excurrent in a rather long, toothed, 

 cuspidate point ; cells rather small, narrow at margin, forming a 

 yellowish border. Seta about i inch long, capsule sub-horizontal 

 or inclined, oblong- pyriform, i£ lines long, with a tapering neck 

 shorter than the sporangium, symmetrical , slightly contracted 

 below the mouth, brown; lid convex, apiculate. Autoicous ; 

 male flower on a separate branch. 



Hab. Rocks, walls, etc., usually in mountainous regions, not common. 



Resembling a small form of Bryum bimum, and also B. intermedium and B. 

 caspiticium, but differing in the autoicous inflorescence ; from the first of these it 

 differs too in the more acuminate leaves with longer points, and from the other two in 

 the more distinct border to the leaves. It is for the most part an inhabitant of sub- 

 alpine regions, and is somewhat variable in size. 



* Bryum affine Lindb. (Webera affinis Bruch ; Bryum 

 cuspidatum Schp., Syn.) (Tab. XLIV. H.). 



Hardly differing from the above except in the inflorescence, 

 which is synoicous. The capsule is rather more pendulous, and 

 perhaps as a rule rather smaller. 



Var. p. cirratum Braithw. (Bryum cirratum Hornsch., 

 Schp. Syn.). Leaves longer, more longly acuminate, with a 

 wider border ; nerve longly excurrent in a denticulate arista ; 

 capsule shorter. 



Hab. Walls, rocks, etc. , in damp places, not common. The var. cirratum at 

 higher altitudes. Fr. summer. 



I prefer to unite this plant with B. palkscens rather than with B. bimum, since 

 from the former it practically differs in inflorescence alone, while it is separated from 

 the latter not only by differences of habit and size, but also by the form of the leaf, 

 much more resembling in that B. paUescens than B. bimum. The var. cirratum is 

 the alpine form of the species. 



18. Bryum intermedium Brid. (Tab. XLIV. G.). 



In dense tufts, deep green, stems short with short innovations, 

 about £- 1 inch high. Leaves crowded, when dry imbricated, 

 hardly twisted, concave, ovate-lanceolate and oblong-lanceolate, 

 acuminate, margin revolute, almost entire, nerve excurrent in a 



