1904] CARDOT AND THERIOT: MOSSES OF NORTH AMERICA — 375 
laribus rectangulis, 80-90 longis, 25-30» latis, marginalibus 
linearibus, limbum pulchre distinctum lutescentem, incrassatum, 
2-3-stratesum efformantibus. Flos masculus in ramo proprio 
terminalis. Capsula in pedicello rubello, 1.5-3™ longo, nutans, 
oblonga, arcuata, 4—-4.5™" longa, 1™™ crassa, collo attenuato 
sporangio aequilongo, operculo convexo, breviter apiculato. 
Annulus duplex et triplex. Peristomium perfectum, 0.48™" 
altum; endostomii membrana ultra medium dentium producta, 
processus in carina anguste et parce fissi, cilia 1-3, appendiculata. 
Sporae papillosae, diam. 24m. Plate XXII. 
Newfoundland: John’s Beach, wet places (Rev. Arthur C. Waghorne, 
1895). 
Allied to B. meeseoides Kindb., B. drepanocarpum Philib., and B. subdre- 
panocarpum Card. & Thér. by the form of the capsule, but distinct from these 
species by the monoicous inflorescence and by the leaves plane on the margins, 
or nearly so, with a very distinct and thickened border. It also much resem- 
bles B. pallens Sw. var. arcuatum Sch., from which, however, it differs by the 
shorter leaves, with margins plane or scarcely reflexed at base and denticu- 
late or sinuate at apex. 
Bryum dimorphophyllum Card. & Thér., sp. nova.—Verisimi- 
liter dioicum, sat robustum. Cespites compacti, cohaerentes, 
superne lutescenti-virides, intus dense rufo-tomentosi. Caulis 
erectus, 4-5°™ altus, pluries divisus. Folia sicca erecta, ramea 
contorta, madida erecto-patentia, dimorpha: inferiora valde con- 
cava, e basi longe decurrente ovata vel oblonga, 1.5™" longa, 
1™ lata, apice cucullato obtusissimo, costa sub apice evanida, 
Superiora majora et angustiora, 2.2 longa, 0.8™™ lata, lanceo- 
lata, acuminata, acuta, minus decurrentia, costa percurrente vel 
breviter excurrente; omnia marginibus integris, e basi usque 
apicem versus revolutis, cellulis quadratis, breviter rectangulis 
vel rhomboidalibus, 30m longis, 14 latis, parce chlorophyllosis, 
parietibus crassis, marginalibus angustioribus, linearibus. Folia 
perichaetialia minora, angustiora, acuta, costa breviter excurrente. 
Capsula in pedicello purpurascente circa 2°™ longo nutans pendu- 
lave, anguste subpyriformis, 3™” longa, 0.9g™™" crassa, sicca et 
Matura sub orificio paulisper constricta, operculo convexo-conico. 
Annulus latus, triplex. Endostomii membrana elata, calls 2-3, 
dppendiculatis. Sporae laeves, inaequales, aliae, magis numer- 
