97 



leaves quite entire, I have no doubt in identifying this plant 

 with the European species. 



M 



describes the spores of all Polytricha as very small. "Sporee 

 minimae, vix i-ioo mm. metientes," but the European form has. 

 not smaller spores than the form above described. Not before 

 found in North America. 



M 



Mountains, alt. 7,500 feet, Aug. 10, 1885. Collected by John 

 Macoun. 



DiCHELYMA LONGINERVE, Kindb. n. sp. 



Habit of Hypniun fltiiians. Stems erect, about i decim. 

 high, loosely csespitose, rootless, subpinnately branching. Leaves 

 falcate, entire, the upper yellowish-green, oval-lanceolate, entire, 

 long acuminate, by the yi-Y^ excurrent cota ; most of the 



cells sublinear, the basal numerous, in 4-6 rows, subquadrate or 

 rectangular, the alar greater, pellucid. Flowers and capsules 

 unknown. 



This species very much resembles a Harpidiitm and indeed 

 may be one, as I thought at first sight. Quite common in dried- 

 up ponds on sticks at Cedar Hill, near Victoria, Vancouver 

 Island. Collected by John Macoun, June, 1 887. 



Leskea NIGRESCENS, Kindberg. 



Plants very small, densely tufted, blackish green, stems short, 

 creeping, pinnate. Stem leaves close, appressed when dr}', open- 

 erect when moist, at base broadly ovate and scarcely reflexed, 

 acuminate, entire, obscurely but faintly papillose, branchlet leaves 

 erect, very much smaller and looser, blunt at the short acumen ; 

 cells round-oval, costa obsolete, rarely reaching to the middle. 

 Dioecious. Fruiting specimens not found. 



This species could possibly be referred to the genus Hetcro- 

 cladhim, but the costa Is not furcate. On flat boulders in Mc- 

 Kay's Woods, Ottawa, Ont. Macoun, Oct. 12, 1885. 



Hypnun (Camptothecium) HAMATIDENS. Kindb.; {Camp- 



totheciwn Nuttallii, Lesq. and James, 1. c. in part.) 

 Dioecious. Densely csspitose, yellow or green, glossy. 

 Stems prostrate, scarcely or not radiculose, irregularly pinnate- 

 ramose ; branchlets short, attenuate and flexuose. Leases opcn- 

 erect, lanceolate, long filiform-acuminate, striate, hooked-denticu- 

 late or spinulose all around, reflexed on the borders ; _ ceils nar- 

 row, the basilar small and short ; costa stout, vamslung at tlic 



