DIPLOVHYLLUM. IW 



antical 7 mm. x '.Vd mm., postical 1 ' mm. x '4 mm.; cells 015 mm. 

 bracts, antical lobe I'l mm. x -6 mm., postical r4 mm. x 'G mm. ; 

 perianth 1'75 mm. x '!) mm., 2'25 mm. x V'l'o mm.; pistillidia 

 •2 mm. X '05 mm. 



Hab. — On rocks in alpine situations. 



7. The Grlyders, Carnarvonshire, W. Wilson, 1844. 15. Ben 

 Lawers, Perthshire, Rev. C. IL Butsfead, identified and comm. by 

 G. A. Holt. 1(3. Moidart, West Inverness, S. M. Macuicar. 



In similar localities on the Continent, in North America and 

 Canada. 



Obs. — This species has usually been considered a variety of 

 the previous one, but Prof. Lindberg regarded it as distinct, its 

 neater habit, generally smaller and more graceful form, the 

 direction of the postical lobe being more horizontal, the lobes 

 generally more rounded, the absence of the pseudo-nerve — 

 although traces are sometimes observable — sustain this view. 



Description of Plate XCVIII. — Fig. 1. Plants natural 

 size. 2. Stem x 16 (Thed. 197). 3. Portion of stem x 31 

 (Norway, Lindberg). 4. Leaf x 24 (ditto). 5. Portion of leaf 

 X 290 (ditto). 6, 7. Bracts x 24 (ditto). 8. Perianth x 24 

 (ditto). 9. Portion of mouth of perianth x 85 (ditto). 

 10. Pistillidium x 85 (ditto). 



3. Diplophyllum obtusifolium [Hook.), Dion. 



Jangennania ohtusifolia, Hook. Brit. Jung, t, 2G (181G). 

 Dlplojjhijllum obtusifolium, Dum. Recueil, p. IG (1885). 



Paroicous or monoicous, densely ctespitose, small, green, 

 greenish-brown or brown in colour. Stems simple or innovantly 

 branched, postical side of stem often of a reddish tinge, sub-erect 

 or ascending ; radiculose up to apex, rootlets thick, dense, long, 

 hyaline. Leaves accrescent, bifarious, imbricate, conduplicate, 

 unequally bifid to about the middle, margin minutely denticulate 

 or entire, antical lobes 2 or 3 times smaller than the postical 

 incumbent, erect or erect-patent (l0°-20"), ovate or oblong, obtuse 

 or acute, postical lobe horizontal or slightly ascending (90-80 ), 



Q 



