MACOUN.] CATALOGUE OF CANADIAN PLANTS. » 199 



nodulose, not appendiculate ; pedicel very rough, about 2 cm. long. 

 Monoecious. 



This species resembles Brachythecium spurio-rutabulum in habit, but 

 the leaves are still more plicate and nearly entire ; the pedicel also 

 is longer. It differs from Brachythecium Butabulum only in the very 

 plicate leaves, etc. 



On very wet and rotten logs in woods along the Columbia River 

 about one mile above Eevelstoke, B.C., May 13th, 1890. (Macoun.) 



(743.) B. lamprochryseum, C. M. & Kindb. (n. sp.) 



Tufts large, laxly cohering to the substrate with few rhizoids, golden- 

 yellow, shining or finally decolorate. Stem elongate, often pinnate } 

 branches generally short or sometimes more elongate and faintly 

 curved above, subacute. Leaves open, more or less loosely disposed, 

 long-decurrent, distinctly auriculate, very plicate, from the triangular- 

 ovate base short-acuminate, filiform or subulate-cuspidate, often curved 

 at apex, nearly flat, only the auricles faintly revolute ; borders faintly 

 denticulate all around ; most of the cells long and very narrow, the 

 lowest basal ones dilated and short, also the alar, all very sparingly 

 chlorophyllose ; costa broader at the base, faint, reaching to the 

 middle, but in the smaller narrower and more loosely disposed leaves of 

 some branchlets longer, reaching to the acumen. Capsule short, sub- 

 ovoid, thicker near the base, slightly contracted below the mouth, 

 arcuate ; lid unknown ; teeth finally brown at least at the base ; cilia 

 not appendiculate ; pedicel very rough, about 3 cm. long. Perichetial 

 leaves nerveless, when dry squarrose, the inner sheathing with a short, 

 subulate acumen and a long, filiform point. Monoecious. 



Allied to Brachythecium Butabulum, but distinct in the nearly plane 

 (not concave), auriculate, long-decurrent and very plicate leaves. 



On stones. Mount Finlayson near Coldstream ; on Mount Benson 

 near Nanaimo and at Comox, Vancouver Island, 1887. (^Macoun.) 



(744.) B. mirabundum, C. M. & Kindb. (n. £p.) 



Tufts large, very laxly cohering, nearly without rhizoids, silky or 

 yellowish-green, faintly shining. Stem elongate, irregularly divided 

 or prolonged, into sciuroid-curved, obtuse branches. Leaves loosely 

 imbricate, crowded, when dry subrugose, when moist patent, short- 

 dccurrent, indistinctly auriculate, faintly plicate, from the concave, 

 ovate and gradually acuminate base long-cuspidate ; borders broadly 

 recurved at least at one side of the nearly entire bas^e to the involute 

 and distinctly denticulate acumen ; cells pale, elongate, and narrow, the 

 alar subquadrate and not much wider than the other basal ones, all 



