Part 2, 1913] DICRANACEAE 133 
with more or less thickened, pitted walls; inner perichaetial leaves rather narrowly costate, 
convolute, abruptly narrowed to a slender, rough point about as long as the broader part: 
seta straw-colored, sometimes reddish, solitary, 1-2 cm. long: capsule erect, cylindric, nearly 
straight, 2-2.5 mm. long, somewhat furrowed when dry, with a slender-beaked lid scarcely as 
long; annulus wanting; peristome-teeth reddish, more or less obliquely striate on the outer 
face, mostly unequally divided two thirds down or more into two forks, 60 « wide at the base, 
with the inner articulations about 12 » apart: spores slightly roughened, up to 28 « in diameter. 
TYPE LOCALITY - Europe. 
DISTRIBUTION: Newfoundland to St. Paul’s Island, Behring Sea, and southward to North Carolina 
and Colorado; also in Europe and Asia. 
ILLUSTRATIONS: Hedw. Descer. 3: fl. 9; B.S.G. Bryol. Eur. ol. 72. 
Exsice.: Drummond, Musci Am. 94; Sull. Musci Allegh. 161; Sull. & Lesq. Musci Bor. Am. 58; 
ed. 2. 74; Aust. Musci App. 84; Macoun, Can. Musci 38, 38a, 54, 589; Ren. & Card. Musci Am. 
Sept. Exs. 204; Holz. Musci Acroc. Bor. Am. 132. mM Las 
36. Dicranum Sauteri B.S.G. Bryol. Eur: (37-40:) 
Dicranum 33. 1847. 
Campylopus frigidus Lesq. in Porter & Coult. Syn. Fl. Colo. 155, in part. 1874. 
This species is in habit similar to D. longifolium, from which it may be distinguished by 
the leaves smoother above with broader leaf-blade, by the narrower costa only about 120 z 
wide at the base and usually less than one third the leaf-width, and by the peristome-teeth 
which are punctate or nearly smooth on the outer face below, not or scarcely striate: spores 
about 25 w in diameter. 
TYPE LocALITy: Austria. 
Distripurion: Selkirk Mountains, British Columbia; Colorado; Chiricahua Mountains, Arizona; 
also in Europe and Asia. 
ILLUSTRATION: B. S, G. Bryol. Eur. #1. 71. 
DOUBTFUL’ AND EXCLUDED SPECIES 
Dicranum caespitans Schimp.; Besch. Mém. Soc. Sci. Nat. Cherbourg 16: 164 (1872), 
is Dicranella subinclinata. 
Dicranum Demetrii Ren. & Card. Bot. Gaz. 22: 48 (1896), is Oncophorus Wahlenbergit. 
Dicranum Pittieri Ren. & Card. Bull. Soc. Bot. Belg. 31!: 146 (1893), is Dicranodon- 
taum costaricense. | 
Dicranum sublongisetum C. Mill. Bull. Herb. Boiss. 5: 185 (1897), is Dicranodontium 
longisetum. : 
Dicranum subulifolium Kindb.;Macoun, Bull. Torrey Club 17: 87. 1890. This is a rather 
doubtful species. There are no specimens from the type locality, Cedar Hill, Vancouver Island, 
either in collections at Ottawa or in the herbarium of the New York Botanical Garden, but 
under this name occur in Macoun collections no less than five species, as follows: D. fragili- 
folium, D. groenlandicum, D. elongatum, D. Bergeri, and D. flagellare. 
12. BROTHERA C. Mill. Gen. Muse. 258. 1901. 
Dioicous. Fertile plants in compact, pale, glossy-green, low cushions with scarcely branch- 
ing stems, radiculose below and often bearing in the axils of the upper leaves numerous, small, 
deciduous, rudimentary leaflets. Stem-leaves erect-spreading, lanceolate-subulate, subtubu- 
lose above, entire except at the apex, often slightly ribbed on the back; costa filling most of 
the upper part of the leaf, in cross-section near the middle showing a row of large outer cells 
on the under side similar to the row of large cells on the upper side and no distinct stereid- 
band; cells of the leaf-blade thin-walled, rectangular, narrow in the margin, toward the costa 
broader and often lax, the alar ones pale and fragile, often scarcely distinct. Seta erect, smooth, 
slightly sinuous. Capsule erect, oblong to elliptic, without stomata, not furrowed; annulus 
large; peristome-teeth inserted below the mouth, divided to near the base into two subulate, 
papillose forks; lid with a long, erect beak. Calyptra large, cucullate, with cilia at the base. 
Type species, Brothera Ankerkronae C, Miill. 
