The Scottish Naturalist. 129 



Mr Roy of Aberdeen, had picked up a specimen of D. elongatwn 

 in Inverness-shire during their excursion there in 1870. In 1873 

 Mr Roy and myself gathered abundant and very characteristic 

 specimens of the same plant in Aberdeenshire. They were half 

 recognised at the time on the field, and fully determined soon 

 after. Schimper's description of this plant is not only insufficient 

 for its identification, but is in some respects misleading, inas- 

 much as it declares the leaves to be " integerrima," whereas, as 

 has been pointed out by Milde, they are either quite entire or 

 weakly toothed at the apex and on the back of the nerve. The 

 appended description, amended and detailed, may be of service 

 in identifying a species which I suspect may occur not unfre- 

 quently on our higher mountains : — 



D. elongattun^ Schwaegr. Suppl. 181 1. — Tufts large, pale 

 yellowish green above, remarkably co7npact and matted together 

 from below the apex by abundant dense ferruginous tomentum. 

 St. 2 — 6 in. long, slender. L. small i^ — 2 lines long, erecto- 

 pate7it or slightly secnnd; lanceolate shortly subulate, semitubular 

 about the middle, very acute, quite or ?iearly entire at the apex. 

 N. narrow, pale, concolorous, a little promifient on the back, smooth 

 or faintly toothed at the apex, continuous. C. at exti'eme apex 

 elo7igate - oblong ; lower down rhombic or subquadrate ; in the 

 lower 3" elongate with rounded or sometimes oblique ends ; all 

 of them rather dista?it, not continuous ; the enlarged ones at the 

 basal margin, golden yellow (sometimes with a few hyaline), not 

 reaclwig to the nerve. Outer perich. 1. suddenly subulate from a 

 very short and broad sheathing base ; the inner with a longer 

 base. Caps, cernous, ovate, gibbous, with a distinct neck, sulcate 

 when dry, greenish brown. Lid conical, with a pale, subulate 

 beak, longer than the caps. Ring narrow. Teeth of peristome 

 irregularly bifid striate red. Seta yellow, i in. long. Fr. Augt. 



Var. /? orthocaipum. D. sphagni Brid. Bryo. Univ. More 

 slender ; 1. and caps, erect and smaller. 



Hab. and Dist. Moist peaty places and rocks on the moun- 

 tains, with Cynod. virens, Leptot. flexicaule, &c. Rare and barren. 



Little Craigandal, Braemar, J. Roy and J. Fergusson. Corrie 

 Ardor, Inverness- shire. Professor Barker and J. Roy. 



Abundant within the Arctic circle, Norway, Swed. Rhaetian, 

 Styrian, and Jurassic Alps, Siberia, U. States of America. 



One of the most interesting discoveries of recent years is that 

 of Aulacomnium turgidum, Wahl. This plant, which is so re- 



I 



