musci. 29 



Our specimens accord accurately with authentic specimens of P. 

 seniiangulatum, Pers., which is clearly distinct from P. Magellanicum, 

 to which it has been referred by late authors. Besides other charac- 

 ters less striking, its more linear obtuse leaves with a bright orange- 

 red spot on the upper part of their sheathing base, at once distinguish 

 it from P. Magellanicum. 



Plate 6, A. — Poltteichum semiangulatum : two plants, of the 

 natural size. Fig. 1, 2, 3. Leaves. 4. Cross section of sheathing 

 base of leaf. 5, 6, 7. Cross sections of the blade of the leaf, showing 

 the lamellae. 8. Portion of upper part of sheathing base of leaf, 

 showing the reticulation. '9, 10, 11, 12. Capsules. 13. Peristome 

 with portion of capsule wall. 14. Four teeth of the peristome. — 

 Details magnified. 



7. POLYTRICHUM TORTILE, Swartz. 



Polytrichum tortile, Swartz. Flo. Ind. Oce. 3, p. 1839 ; Flo. N. Zeal. p. 96. 



Hab. New Zealand. 



It is not certain that this is the true Swartzian P. tortile. Our 

 plant is the same as the one so named by Hooker and Wilson in the 

 Flora of New Zealand. 



8. Polytrichum Junghuhnianum, Dz. & Mb. 



Polytrichum Junghuhnianum, Dz. & Mb. Bryol. Javan. p. 41, t. 31. 



Hab. Hawaii, Sandwich Islands. 



Subgenus 5. Cephalotrichum, ScMmp. 



Peristomii denies 16. Capsula teres elongata. Calyptra villosa. Folia 

 rosulato-congesta. 



