188 MOSSES AND LIVERWORTS. 
pedicellata sub pendula pyriformi-elliptica : flore masculo terminali capituliformi. Banks of 
streams above Sonora, base of the Sierra Nevada. The dark yellowish-green of the foliage ; 
the shorter, more obtuse, and nearly entire leaves, with a closer areolation ; the less obovate 
capsule, and the capituliform male flowers of this species, separate it from B. Wahlenbergii, 
its nearest congener. (Plate V.) 
B. ARGENTEUM, Linn.; Bryol., Europ., Bry., monogr., p. 78, t. 41.—On rocks, dry ravines, 
fifty miles west of the Rio Colorado, on the line of the survey. 
B. CALIFORNICUM, (sp. nov.): dioicum? dense ceespitosum ; caule atque innovationibus bre- 
vissimis bulbiformibus; foliis inferne dissitis superne majoribus densissime capituliformi- 
imbricatis concavis subquadrato-ovatis breviter apiculatis, margine subintegerrimis subplanisque, 
continuo-costatis; capsula atro-sanguinea oblonga vel oblongo-ovata pendula, collo haud 
angustiore siccatate rugoso basi obtusato ` operculo minuto hemisphaerico ; peristomii dentibus 
dilute purpurascentibus profunde insertis remotius articulatis, ciliolis singulis brevibus exap- 
pendiculatis; annulo magno revolubili. Near Benicia. This species, compared with B. atro- 
purpureum, has a more compact mode of growth, leaves broader, shorter, less acuminate, and 
of a subquadrate or obovate-quadrate outline, costa not excurrent, and capsule with a collum 
as long and as broad as the sporangium. 
In B. versicolor, another nearly allied species, the pedicel at the base of the capsule is more 
suddenly bent, and the branches somewhat julaceous, with leaves longer, more acuminate, and 
cuspidate by the excurrent costa. 
B. Californicum is best distinguished from either of these species by its short bulb-like stems 
and branches, its very small conic-hemispherical operculum, and the deep insertion below the 
rim of the capsule of its peristomial teeth. The inner peristome is seldom well developed. 
B. Blindii has a globose-pyriform capsule, with a tapering and much smaller collum ; its 
peristome and the areolation of the leaf are also different. (Plate VI.) 
B. opcoNIcUM, Hornsch.; Bryol., Europ., Bry., monogr., p. 59, t. 37.—Near San Francisco 
and Napa City. 
Specimens, partly incomplete, of a Bryum collected in Mammoth Tree Grove, on the decayed 
trunks of trees, may belong to this species. The capsules, however, are shorter and less 
clavate, and the comal leaves longer and more gradually acuminate, and the habitat, on 
decayed wood, unusual. 
B. INTERMEDIUM, Brid.; Bryol., Europ., Bry., monogr., p. 41, t. 19.—Var. folis elongato- 
oblongis sensim acuminatis. No locality given. The capsules are in various stages of develop- 
ment, as is common in this species. 
B. TORQUESCENS ; Bryol., Europ., Bry., monogr., p. 49, t. 20.—Var. foliis latioribus densius 
areolatis siccis minus contortis. Oakland, opposite San Francisco. 
B. occIDENTALE, (sp. nov.): dioicum, brunnescens; caule brevi inferne defoliato tomentoso 
superne congesto-folioso; innovationibus gracilescentibus in media longitudine incrassatis و‎ 
foliis ellipticis breviter acuminatis (perichetialibus oblongo-lanceolatis) costa valida HOU onte 
cuspidatis, decurrentibus margine subintegerrimis vix recurvis, reticulo rhombeo-hexagono 
cellulis inferioribus subquadratis ; capsula pendula oblonga vel oblongo-obconica macrostoma ` 
peristomio normali ciliolis ternatim interjectis exappendiculatis; annulo permagno ; Deal 
convexo-apiculato: planta mascula graciliore innovando-continua: flore terminali gemmiformi 
polyphyllo. Near San Francisco. This species is separated from the nearly related B. cespi- 
ticium by its erect, appressed, decurrent, scarcely margined leaves, not so acuminate nor so 
long-cuspidate, by their heavier costa, with a denser texture, composed, in their lower half, of 
quadrate cellules. It has also an oblong and smaller capsule, with but a slight tendency to a 
pyriform outline, a wider ana reddish (not yellowish) operculum, and a larger annulus. (Plate 
Vil.) 
Ms MENZIESIT Hook. in Botanic. Miscell. 1, p. 36, t. 19; Hypnum acanthoneuron, Schweegr. 
Suppl. t. 258. Common on the coast range of mountains ; fruit rare. 
