M U S C I. 31 



Tribe 13. BRYE51. 



1. BRYUM, Dill. 



1. Bryum giganteum, Booh. 



Bryum giganteum, Hook, in Schwaeg. Suppl. 2, 2, p. 20, t. 158. 



Hab. Kaala Mountains, Oahu, Sandwich Islands. Specimens bar- 

 ren. 



2. Bryum truncorum, Brid. 



Bryum truncorum, Brid. Bryol. Univ. 1, p. 699 ; Flo. New Zeal. p. 86. 



Hab. New Zealand. 



3. Bryum megalostegium, Sp. Nov. (Tab. 7.) 



B. dioicum dense ccespitans ; foliis ovato-lanceolatis costa excurrente 

 breviter cuspidatis, margmibus integerrimis planis; capsula clavato- 

 pyriformi incurva nutante vel pendula late annulata pachydermi 

 rnacrostoma ; operculo permagno subhemisplicerico apiculalo. 



Hab. Forests on the sides of Mauna Loa, Hawaii, Sandwich 

 Islands. 



Tufts dense, of a shining yellow color. Stems radiculose, purplish- 

 brown below, rather slender, 1-2 inches high, with one or two short 

 innovations from the apex. Leaves ovate-lanceolate, concave, distant 

 except at the top where they are crowded, oblong-acuminate and sub- 

 linear-lanceolate ; all sharply cuspidate by the excurrent costa, their 

 margins entire plain, not bordered; texture thin, soft, composed 

 of elongated hexagonal cellules. Capsule clavate-pyriform, incurved, 

 cernuous or pendulous, thick-walled, mouth very large, collum about 

 the length of the sporangium, tapering into the pedicel ; cilia of the 



