BRONCHI. 



[ ioo ] 



BRYACE.E. 



BRONCHI. See Lungs. 



BRONCHOCERCA.— i»fowocerc« with 

 the caudjform foot cleft at the end. Five 

 species have been described, but it appears 

 that they do not differ by well-marked 

 characters from the species of Monocer- 

 ca. 



BiBL. Werneck, Ber. d. Berl. Mad. 

 1841. 



BROOKE'S APPARATUS. Introduc- 

 tion, p. xix. 



BRUCHlACEiE.-A family of inopercu- 

 late Acrocarpous (terminal-fruited) Mosses, 

 gregarious or csespitose and terrestrial, in 

 which the fruit-stalks sometimes appear lateral, 

 through arising from innovations. The stems 

 are dwarf, and either simple or branched by 

 innovations ; the leaves lanceolate or awl- 

 shaped from a more or less oval base, com- 

 posed of parenchymatous cells, larger and 

 sometimes lax at the base of the leaf, smaller 

 and squarish toward the apex, and furnished 

 with a flattened broad nerve (fig. 49), and 



Fig. 83. 



Fig. 84. 



Archidium . 



Open capsules, devoid of columella and with large spores. 

 Magnified 40 diameters. 



standinguplike bristles, theperichsetial leaves 

 broader at the base and sheathing, all of firm 

 membranous character, shining and smooth. 

 Capsules oval or globose, mostly straight- 

 beaked (fig. 50). British genera: — 



I. Archidium. Calyptra completely enclo- 

 sing the (globose) capsule, bursting above. 

 Inflorescence monoecious, bud-shaped. 



II. Astomum. Calyptra dimidiate. Cap- 

 sule equal. Inflorescence either monoecious, 

 gemmiform and axillary, or with the antherids 

 and archegones together. 



BRUCIA. See Alkaloids. 



BRYACE.E.— A family of operculate 

 Mosses, acrocarpous, or by innovation pleu- 

 rocarpous, with lanceolate, oval, round or 

 spathulate leaves, composed of cells parallel- 

 ogrammic below, rhomboidal-parenchyma- 

 tous above, more or less dense, with much 

 chlorophyll or a persistent primordial utricle, 

 or at length empty, very smooth. Capsule 

 more or less pear-shaped, clavate, oval or 



ylindrical, with a hemispherical or conical 

 operculum, erect, nodding or pendulous. 

 External peristome, when present, soft, 

 lamellose, internal membranous. British 



genera : — 



I. Mielichoferia. Calj^tra conical-dimi- 

 diate, split at the side. x^- oc 

 Peristome wanting or ^^* 

 simple, then of sixteen 

 equidistant, filiform, 

 flattish, articulated 

 pale teeth, sometimes 

 placed on a short 

 sulcate, reticulate, 

 basilar membrane 

 (fig. 85). Capsule 

 lateral, with a double 

 annulus. 



II. Orthodontium. 

 Calyptra smallish, 

 hood-shaped, fugaci- 

 ous. Peristome arising below the orifice of 

 the capsule, double. External : of sixteen 

 lanceolate- subulate teeth, like those in 

 Bryum; when dry, deflexed below the orifice 

 of the capsule, when moistened, erect. 

 Internal : cilia alternating with the external 

 teeth, half as long or about equal, filiform 

 from a short, somewhat keeled membrane. 

 Capsule annulate or exannulate, with a 

 longish collum. 



III. Bryum. Calyptra dimidiate, smallish. 



Fig. 86. 



^^^^^ 



Mielichoferia nitida. 



Teeth from the peristome. 

 Magnified 150 diameters. 



Bryum intermedium. 



A portion of the peristome. 

 Magnified 150 diameters. 



hood-shaped. Peristome double (fig. 86). 

 Extei'nal : of sixteen lanceolate, soft, yellow- 

 ish equidistant teeth, flat on the back and 

 transversely trabeculated, with a flexuose 



