70 HANDBOOK OF BRITISH HEPATIC^. 



Amongst rocks, in dense crowded tufts. 

 Tufts several inches broad. Stems reddish brown, 

 2 or 3 to 5 inches long, flexuous, 

 simple, or rarely slightly branched, 

 Leaves in four rows, thickly im- 

 bricated, or more scattered, fal- 

 cate, lanceolate, divided nearly 

 three parts down by an acute 

 sinus into two equal, entire, acu- 

 minate segments (fig. 53), pale 

 yellow brown, rigid. Involucral 

 53- leaves numerous, crowded, united 



at their base, acuminate segments alone free, calyx 

 ovate, plicate. Calyptra ovate, white. Capsule dark 

 brown, quadrivalvate. Elaters bispiral. 



var. straminea Dum. Leaves ovate, or 

 ovate-lanceolate, segments erect, lanceolate, 

 colourdarker brown, or almost black. Schisma 

 straminea, Dumort. Hep. Eur. 



On Scotch mountains. 



GENUS 8. TRICHOLEA, Dumort. 



Involucre none; perianth erect, stipitate, 

 free, tubulose, terete, covered everywhere 

 with hairs ; apex truncate, undivided, without 

 teeth, mouth open, circular ; capsule four- 

 valved, coriaceous, naked ; elaters double, 

 naked, deciduous. Dum. SylL, t. i,f. 8. (1831). 

 Hep. Eur., t. 3, / 29. 



Plants stipulate, leaves incurrent, multifid, cut 

 into hair-like segments. 



