389 



On rotten wood and on the ground ; widely distributed from 

 Newfoundland to British Columbia and southward along the 

 Appalachian area ; also reported from California {Hoive) ; the 

 species is also European. It was distributed by Sullivant: Muse. 

 Alleg. 240 (as Jiinge) uiannia bicuspidatd) ; by Austin : Hep. Bor. 

 Am. 58, 59, the latter as var. conferta, a form with crowded leaves; 

 and in Hep. Amer. 71 . The form known as C. Laminersiana found 

 in the British Possessions can hardly be maintained as distinct. 



The species has been frequently figured, the best figures being 

 Hooker, Brit. Jung. pi. 11, and Suppl. //. 4; Ekart, Syn. Jung. 

 Germ.//. 4,/. 2j ; and Smith, Engl. Bot. //. 22jg. 



7. Cephalozia EXTENSA (Tayl.) Spruce, On Cephalozia, 44. 1882. 

 Jungerinannia extensa Tayl. Lond. Jour. Bot. 5: 279. 1846. 

 Gametophyte a prostrate pale or rufous, sparingly branched 



leafy stem ; leaves spreading, complicate-concave, those of the 

 basal portion contiguous, those of the apical portion crowded, 

 bifid more than one-half their length, with triangular-lanceolate 

 acuminate and often apiculate divisions ; leaf-cells about 35 11 in 

 diameter : dioicous ; perianth on a more or less elongated branch, 

 linear-fusiform or sublanceolate, three times the length of the in- 

 volucral leaves, which are in three or four ranks, deeply cleft and 

 sHghtly longer than the ordinary stem-leaves. Sporophyte a long- 

 stalked oval capsule, 0.7 mm. long; spores about 9 ,a in diameter. 

 This plant was originally described from material collected by 

 Dr. Scouler at Observatory Inlet, N. W. America and appears 

 from present data to extend from Washington and British Co- 

 lumbia to northern California. It was distributed in Can. Hep. 22. 



8. Cephalozia pleniceps (Aust.) Lindb. Medd. Soc. Faun, et Fl. 



Fenn. 9: 158. 1883. 



Jungcrmaiinia pleniceps Aust. Proc. Phila. Acad, for 1S69 : 222. 

 1869. 



Cephalozia crassiflora Spruce, On Cephalozia, 40. 1882. 



Gametophyte a short slender prostrate leafy stem ; leaves thick, 

 obliquely orbicular, concave, not decurrent, cleft one-fourth to 

 one-third their length, with acute or somewhat obtuse sinus 

 and acute lobes; leaf-cells rather large, 36-40 ji in diameter: 

 monoicous; perianth terminal on a short branch, 2.6 mm. high, 

 obovate-cylindric, fleshy, three cells thick at base, reduced to two 

 cells above the middle; involucral leaves in about three ranks, ap- 



