476 HYPNACE/E. 



tapering to a very long, almost filiform acumen, which is flexuose 

 ■when dry ; plane at margin, entire or rarely remotely denticulate , 

 concave, not plicate ; nerve very faint or wanting ; cells very- 

 narrow, long, linear-vermicular, 15-20 times as long as wide or 

 more, almost uniform to base, at insertion often yellowish, at 

 angles suddenly large, thin-walled , hyaline, forming small but 

 ■very distinct, somewhat decurrent hyaline auricles ; a very few 

 above these at margin usually quadrate, small, pellucid, with 

 thicker walls. Capsule rather large, cylindrical, arcuate, 

 horizontal. Dioicous. 



Hab. Shady mountainous rocks, rare. Fr. rare, summer. 



A very beautiful species, known from all the allied species of slender habit by 

 the clearly defined hyaline auricular cells ; but usually recognisable also in the field by 

 its very soft slender habit, and beautiful glossy green colour, which is however not 

 quite constant. The leaves are usually described as quite entire, but I have found 

 them in several specimens distinctly, usually remotely, denticulate. The fruit is rare, 

 but I have gathered it abundantly fertile about the Falls of Lodore, conspicuous in its 

 colouring, forming large, vivid green patches with abundant, bright orange brown 

 capsules. 



H. rupestre F. B. White, gathered on Ben Lawers in 1865, appears to belong 

 here, according to the Rev. J. Fergusson (Scottish Naturalist, Vol. II., p. 279). 



22. Hypnum Bamberger! Schp. (Stereodon Bambergeri 

 Lindb.) (Tab. LVIII. K.). 



Somewhat resembling H. hamulosum but more robust ; stems 

 more or less erect, 2-3 inches long, rarely pinnate, usually 

 fastigiate with long, erect, simple branches, dark yellowish green, 

 variegated with orange and brown ; soft or rather rigid. Leaves 

 very regularly and elegantly circinate-secund , when dry having 

 the point flexuose, f-i line long, from a short, widely oblong base 

 gradually narrowed to a long, channelled, acute but hardly filiform 

 acumen, entire or sinuolate, plane at margin, nerveless or with 

 one or two faint striae ; cells linear-vermicular, variable in length, 

 but narrow, with incrassate, porose walls; at base usually orange ; 

 angular few, rather large, quadrate-hexagonal, orange, the walls 

 strongly incrassate and porose, forming minute, but rather distinct 

 orange auricles. Fruit unknown. 



Hab. Alpine rocks and earth, very rare ; summit of Ben Lawers. 



In habit and general appearance this species is not unlike some of its allies ; but 

 in addition to other characters, the leaves are of a more solid texture, with porose, 

 incrassate cell-walls, and with the angular cells few, incrassate, orange, more con- 

 spicuous than in H. hamulosum, but less so than, and different from those of any of 

 the other similar species except il. imponens, to which they bear some resemblance ; 

 they are paler, however, and less clearly defined from the adjoining cells ; and the 



