CESIA. 399 



Ditto X 24. 10. Leaf X G4. 11. Portion of loaf x 290. 12, 13. 

 Sub-bracts x 64. 14, 15. Bracts with inner perichaetium x 64. 

 16. Bract x 64. 17. Pericfonial bract x 64. 18. Antheridium x 

 85 (Ben Nevis, W. West). 



'&' 



5. Cesia brevissima [D/nn.). 



Jungerynania coyiclnnata 11 viinm', Schleich. Cat. exsicc. (1821). 



Acolea brevissima, Dum. Syll. Jung, p 7G (1831). 



Gjfmnomitrinm adustum, Nees, Nat. Eur. Leb. 1, p. 120 (1833); SchifFn. in 



Engl. & Prantl, Pflanzenf. 91 & 92 Lief. p. 77 (1893). 

 Cesia aclusta (Nees), Lindb. in Meddel. soc. F. Fl. Fenn. 13, p. 238 (188(;)et 14, 



p. (59 (1888); Kaalaas Leverm. Norge, p. 42(5 (1893). 



Paroicous, shallowly ca^spitose, minute, dark brown colour. 

 Stems intricately entangled, rhizomatous, rhizomes creeping, 

 stems somewhat erect, rigid, ramose ; radiculose, rootlets ^ew, 

 somewhat reddish, fertile stems clavate-fusiform. Leaves closely 

 imbricate and accrescent on the fertile stems, more distant on the 

 sterile, erect or erecto-patent, oblong or oval, bifid to J or ^, 

 segments acute, somewhat unequal, sinus acute, rarely obtusate; 

 texture firm, cells very small, roundish subquadrate, walls firm, 

 trigones wanting, or small and very indistinct. Bracts larger 

 than the leaves, oval or broadly oval, with one rarely two oval 

 antheridia at their base, innermost bracts 2, of a very delicate 

 texture, pale colour, connate with each other, broadly oval or 

 roundish, quite free from the outer bracts, irregularly dentate, 

 sometimes with a small ovate-acuminate bracteole present. 

 Calyptra oval, sterile pistillidia 8-10, dispersed over its convexity. 

 Capsule dark brown, spores small, pale yellowish or reddish- 

 brown, elaters bispiral, as wide as the sjoores, dark reddish-brown. 



Dimensions. — Stems 2* to 3* mm. long, •] mm, diam. with 

 leaves -3 mm. wide ; leaves "5 mm. long x -3 mm. broad, segments 

 •075 mm., "4 mm. x 25 mm., seg. -05 mm., '4 mm. x -3 ram., seg. 

 •075 mm., ^35 mm. x -2 mm., seg. ^075 mm. ; cells -02 mm. x 

 •015 mm., ^02 mm. x -02 mm., -015 mm. x '015 mm. ; bracts '6 mm. 

 long X -425 mm. broad, segments '1 mm., '5 mm x -4 mm., seg. 

 "075 mm. '55 mm x '5 mm,, seg, "1 mm. ; bracteole -175 mm. x 



