BRYACEAE. 



443 



1. Bryum capillare L. Hair-like Bryum. (Fig. 

 486.) Plants up to I3' high in rather dense, dark green 

 cushions ; stems short, sparingly branched ; leaves crowded 

 in a rosette at the apex, curled and twisted when dry, 

 ovate to lanceolate-acuminate, margins bordered by 1-2 

 rows of narrower cells, entire or slightly toothed near 

 apex; vein ending in the point or excurrent into a mucro- 

 nate tip; upper cells hexagonal, basal oblong, smooth. 

 Pedicel long, red, bent at base, paler and twisted above ; 

 capsule elongated, nodding; neck distinct; lid small, 

 apiculate; annulus large; peristome brown; teeth paler 

 and papillose above; endostome with a basal membrane 

 and appendiculate cilia; spores ripe in spring. 



On rocks and roots of ferns in marshes, usually sterile, 

 and propagating by gemmae. Cosmopolitan and variable. 



2. Bryum Crugeri Hpe. Cruger's 



Bryum. (Fig. 487.) Plants forming loose 



yellowish green cushions ; stems simple, 



up to 8" high ; leaves not crowded, shining, 



lanceolate, acute; vein percurrent, ending in the cuspidate apex; 

 margins plane, not bordered, slightly toothed tow^ard the apex; 

 cells long hexagonal, basal and alar, rectangular, not decurrent. 

 The Bermuda specimens propagate by gemmae and the fruit has 

 not been found. 



On stones in Devonshire Marsh. Ranging from Cuba to Trini- 

 dad and South America but rarely fruiting. 



Bryum dichotomum Hedw., of the Challenger report is 

 a doubtful species for Bermuda; specimens cannot be found in 

 the Mitten Herbarium and no definite locality was recorded. 



Family 8. HOOKERIACEAE C. Mueller. 



HooKERiA Family. 



Plants large or small, usually with decumbent rooting stems; leaves 

 many-ranked, symmetric or unequal in shape ; veinless or usually with two 

 veins; cells smooth or papillose, not different at basal angles. Pedicel 

 erect, smooth or rough; capsule mostly horizontal; calyptra small, usually 

 lobed; lid conic-beaked, peristome double, endostome usually without cilia. 

 A large family of tropical mosses numbering over 300 species grouped in 

 25 genera, of which only one is represented in Bermuda. 



1. CYCIiODICTYON Mitt. 

 Plants very pale and hyaline, leaves 2-veined, cells very large and clear. 

 [Greek, referring to the large cells of the leaf.] Sixty-five species have been 

 described, all American. Type species: HooJceria laete-virens Hook. & Taylor. 



