180 
of B. gemmascens are certainly dioicous; they grew on a wet log 
and were apparently submerged at times, thus giving an unusual 
appearance to the plant: its principal leaf characters are identical 
with those of B. asperrimum. Cardot writes that he is sure P. 
Villardi is distinct from B. asperrimum, as he found male and 
female branches on the same plant. I, however, am not able 
satisfactorily to differentiate it and a specimen from Cardot himself 
seems dioicious, as a great abundance of male branches were 
found on one of the plants examined, but not a single female 
branch. Specimens of B. subintricatum from ia collection are not 
distinguishable from B. asperrimum. Macoun, Can. Musc. 560 
issued as P. sudbintricatum. has long, ieee sanati branching 
stems ; branch leaves very narrowly lanceolate; sterile. Almost 
certainly a different moss from the original. 
I2. BRACHYTHECIUM LAMPROCHRYSEUM C. Muell. & Kindb. Ma- 
coun, Cat. Can. Pl. 6: 199. 1892. 
Gametophyte in wide thick tufts, glossy golden-yellow to yellow- 
green, brown underneath ; stems very stout, 5-10 cm. long, creep- 
ing and long persisting, ascending at the ends, irregularly divided, 
sending up numerous secondary stems; secondary stems 3—5 cm. 
high, irregularly branching, often slightly curved at the ends; 
branches few or numerous, 5-10 mm. long, terete-foliate ; branch 
leaves distant, open, ovate to ovate-lanceolate, not decurrent, 1.2 x 
0.6 mm., acuminate with apex twisted, denticulate all around, 
strongly plicate; costa stout, extending 24—34 length of leaf; 
median cells linear-oblong, 7—10:1 ; basal somewhat shorter and 
broader; alar not differentiated ; stem leaves triangular-ovate, 
slightly auricled, 2-2.5 X 0.8—1.2 mm., more loosly areolate, very 
strongly plicate; basal and alar cells oblong to elliptical ; costa 
extending 4 the length of the leaf, very slender above : dioicous ; 
male branches gemmiform; perigonial leaves broadly ovate, ecostate, 
narrowed to a long linear-lanceolate acumination which is 1-2 
times as long as the body of the leaf; antheridia oblong, short 
stipitate : perichaetium 2-3 mm. long; leaves sheathing at base, 
with squarrose-reflexed tips ; inner leaves lanceolate, long filiform- 
acuminate, nearly ecostate. Sporophyte 2—3 cm. high ; seta brown, 
very rough; capsule brown, oblong-cylindric, 2—2.5 mm. long, 2.5- 
3:1, suberect to horizontal, unsymmetric to arcuate; operculum, 
annulus and inner peristome unknown ; peristomal teeth long fili- 
form-pointed ; spores nearly smooth, 16-20). 
