REMAItK..S ON DRUxVIWONd's MUSCI AMEKICANI. 435 



' 43. S. arcticum. — Too much like S. tmiioides, of which it 

 is probably a variety. 



46. Systylium splachnoides. — Specimens of No. 44, Splach- 

 num Froelichianum^ are in some cases substituted : they are 

 indeed very nearly allied ; the peristome of Systylium is red, 

 consisting of sixteen geminate or lacunose teeth ; that of 

 Splachnum. Frcelichianwn is pale, of eight pairs of teeth much 

 wider at the base. 



48. Encalypta streptocarpa — different from the British spe- 

 cies so called. — It is very probably E. procera, Bruch and 

 Schimper, Bryul, Eur. Fasc. 4. t, 8. Peristome double. 

 Base of the calyptra laciniated and inflexed as in E, ciliata. 

 Leaves with recurved and somewhat revolute margins, some- 

 times also with a piliferous apex. Some of the specimens 

 have the capsule with straight furrows, and in all the cap- 

 sule is less twisted than in E. streptocarpa. 



49. E. affinis, {E. commutata. Bruch and Schimper, BryoL 

 Eur. Fasc. 4. t. 1.) — There is no peristome in this Moss, which 

 is certainly distinct from E. ciliata. 



52. E. rhaptocarpa, var. — The obtuse leaves and absence 

 of peristome seem to indicate a distinct species ; but the spe- 

 cimens are imperfect. 



57. Grimmia atrata -In the supplement to Eng. Bot. the 



writer has described and distinguished G. unicolor and G. 

 atrata. The specimens before us belong to G. unicolor of 

 Hook, and Taylor, Muse. Brit. Suppl. t. 3. — not to Hook. 

 Muse. Exot. t. 100.— It may, however, be G. atrata of 

 Schwaegr. Suppl. t. 116. 



60. G.calyptrata Intermediate between G. ovata^ No. 5U, 



and G. Pennsylvahica, No. 56. 



61. G. f/wiicn.— Not distinct from G. Muhknhergii, Brid. 

 (G. incurva, Muhlenb.) 



64. Weissia turhinata Not sufficiently distinct from W . 



splachnoides. 



66. \V. Seligeri.—'V\\e Moss here given has the seta bent 

 when wet, and appears to be only a blunt leaved variety of 

 W. recur vata. 



