366 BOTANICAL GAZETTE [MAY 
revolutis, costa angusta, in cuspidem subpiliformem abrupte 
excurrente, cellulis mediis hexagonis rhomboidalibusve, parce 
chlorophyllosis, circa 18 longis, 15 latis, superioribus paululum 
minoribus, basilaribus elongato-rectangulis, 40m longis, 18 latis, 
omnibus perfecte laevibus. Folia perichaetialia multo majora et — 
latiora, valde concava, usque 2™" longa. Capsula in pedicello 
pallido, flexuoso, 1o-15™™ longo, erecta, oblonga, basi attenuata, 
ore truncata, pallida, gymnostoma, 1.5—2™™ longa, 0.75™™ crassa, 
operculo depresso, longe tenuirostro, 1.2™™ longo, columellae 
parum adhaerente. Sporae dense papillosae, 24-30 crassae. 
Plate XVIII, 
Nevada: Kings Cafion, near Carson, on ground about willow thickets (C. 
F. Baker, 1902). 
This species seems very distinct from any other European or North 
American Pottia, 
DipyMODON TOPHACEUs Jur. var. decurrens Card & Thér., var. 
nova,— Var. e/atae similis. Folia remota, madida recurva, longe 
decurrentia, dorso valde papillosa, costa scabra. : 
Texas: Shovel Mt., Burnet county (Rev. Franciscus Ebeling ; herb. Dr. 
E. Zickendrath), 
Desmatodon Bushii Card & Thér., sp. nova.— Laxiuscule ces- 
pitosus, olivaceo-viridis. Caulis erectus, 5-15™™ altus, simplex 
vel divisus. Folia sicca crispatula, madida erecto-patentia, 
i-1.5™™ longa, 0.4™™ lata, oblongo-lanceolata, plerumque obtusa, 
costa breviter excurrente mucronata, marginibus integris longe 
revolutis, cellulis inferioribus rectangulis, hyalinis vel paululum 
lutescentibus, 35-40 longis, gm latis, caeteris quadrato-rotun- 
datis, valde papillosis, opacis, diam. 7-8, costa basi 60» crassa. 
Folia perichaetialia majora, in tertia vel dimidia parte inferiore 
hyalina, magis acuminata, marginibus tantum superne revolutis. 
Capsula in pedicello pallide rubello, circa 10™ longo, erecta, 
subcylindrica, cum operculo 2™™ longa, 0.44™™ crassa, operculo 
conico, breviusculo, 0.5™" longo. Calyptra dimidiam partem 
capsulae obtegens. Peristomium 0.35™™ altum, purpureum, 
membrana basilari brevi, dentibus leniter contortis, usque ad basin 
in 2 crura filiformia, papillosa, saepissime inferne 2 vel 3 trabe- 
culis coalita divisis. Sporae laeves, variabiles, globulosae vel 
