REVUE BRYOLOGIQUE #8 
. red cells. Pedicel of the capsule (and the stem) very 
sr à GC. EryraroponriA Kindb.; Pogonatum Kindb., Cat. of 
Canad. Musci ; Pog. contortum Sull., Icon. musc. in part. 
Differs also from the ressembling C. contorta in the more 
numerous lamellæ of the leaves, about 40. 
Obs. — Catharinea Dixoni Braïthw., Brit. Moosf., t. 45 
_ appears to be a species of the present genus, although the 
author will consider it as « a form of Polytrichum gracile »; 
the leaves are not distinctly contracted above the sheathing 
base, short-acuminate, dentate to the middle, cuspidate by the 
short-excurrent costa; cells subquadrate; the marginal teeth 
formed by 1 cell; the lamellæ 22; capsules unknown. Speci- 
ens not seen. 
6. POLYTRICHUM L. 
do de A2 pe Alotdelld G:: M.,:Syn. 
. Capsule papillose without angles and apophysis; calyptra 
densely hairy-leaves often incurved when dry, very rarely 
aristate. EN. ne LES à. 
. Leaves incurved when dry, not appressed; cells of the 
mellæ thin-walled and smooth; costa not excurrent. Stem 
ally simple and short. Prothalium often persistent. van 
pper leaves subulate, long and narrow, broadly shea- 
üng; lamellæ few, about 410. mn 
1. P. penNsyzvanicum Hedw.: C. M., Syn. Pogonatum brevi- 
aule Pal. B., Sulliv., Icon. Musc.;Lesq. et James, Man. 
Lower leaves short and short-acuminate, the upper ones 
faintly crenulate. Capsule subcylindric. 7. 
. b. Leaves obtusate, broad and not long; lamellæ nume- 
ous. , MN 7 
2. P. nano Hedw.; C. M., Syn. Pogonatum P. B.; Br. Eur. 
lytrichum subrotundum Huds.; Braïth., L. €. FA 
D. pracavPuyizum Rich., C. M., Syn. Pogonatum P. B., 
Icon. Muse. pe PENSE 
Differs from the last in the leaves obtuse and entire, the 
pete suboval. Ress ; "" sr ta 
4. P. auoies Hedw.; C. M., Syn. Pogonatum Brid.; 
Re En ne RE a. Ce 
. B. Leaves not incurved, generally appressed when dry; 
lamellæ numerous, their apical cell th ick-walled, papillose or 
crenulate. Stem usually branched. das ne 
5. P. urniGer um L.; C. M., Syn. Pogonutum P. B.; Br. Eur.; 
sq..et James, Mag." Re at at 
6. P. pexrarTun Menzies;, G. M. Syn. Pogonatum Brid., 
ulliv., Icon. musc.; Lesq. et James, Man. 
Differs from the last e leaves more strongly dentate, 
e 
