68 BRITISH CHAEOPHYTA. 



Var. b. barbata. 

 (Plate XLIV, Fig. 9.) 



C fragilis var. harhata Ganteeee Oesterr. Char. p. 20, t. 2, f. 16 



(1847). 

 C. trichodes Kutzing in Flora, XYII i, p. 705 (1834) ; Tab. Phyc. Vll, 



t. 56, f. 1 (1857). 



Stipuhdes of both series well developed, the lower 

 often almost as long as the upper. Bract-cells and 

 hracteoles very long. 



This may be regarded as an exuberant form of the species. 

 In a specimen collected by Dr. G. C. Druce at Weston-in- 

 Gordano, Somerset, there are instances of two antheridia being 

 developed at the same node, one above and one below the 

 oogonimn, and the spine-cells are unusually long, sometimes 

 exceeding the diameter of the stem. 



We have seen specimens referable to this variety 

 from Cornwall, W., Somerset, N., Kent, W., Salop, 

 Radnor, Pembroke, Merioneth, Anglesey, Lines, S., 

 Cheshire, and Westmorland ; from many Scottish 

 counties from Kirkcudbright to Orkney ; from many 

 Irish counties from Waterford and Kerry, N., to 

 Antrim and Mayo, E. 



Var. c. annulata. 

 (Plate XLIV, Figs. 10-11.) 



C. annulata Wallman Porsok Syst. Charac. p. 100 (1853); Transl. 

 p. 82 (1856). 



C. fragilis var. annulata Lange in Flora Danica, 2798, fig. 2 (1869). 



C fragilis var. delicatula Groves in Journ. Bot. XVIII, p. 102, t. 207, 

 t.la (1880). 



ExsiccATA : — Groves 3 ; Groves and Bullock-Webster 42. 



Plant dwarf, densely tufted ; often producing root- 

 bulbils. Stem with very short internodes, often not as 

 long as the branchlets ; branchlets very short and much 

 incurved, the segments very short and with the cortical- 

 cells inclined to be tumid. 



