y:o 14] Contributions to the Bryological Flora of the Philippincs. 7 



augustis sim e limbatis, nervö infra summmn apiceni evanido 

 optime diversa. 



Tlie genus Orthomnium Wils in Kew Journ. of Bot. IX. 

 p. 368 was not approved b}^ Mitten, wlio in Musc. Ind. or. 

 p. 142 considers that the two then-known species only form 

 a section of the genus Mnium. By my treatise of the Mnia- 

 ceae in Engler-Prantl I had not an opportunity of exami- 

 ning the peristome beuause on all the specimens to which 

 I had access the sporogones were either to old or to young. 

 As the structure of the le af entirely agrees with that of the 

 species in the section Rhizomnium, I considered that I ought 

 to. place the earlier-known species of Orthomnium in this sec- 

 tion. On examination of the mature sporogones of O. Loheri 

 I found meanwhile to my great surprise that the peristome 

 differed in so great a degree in its structure from that of 

 the Mnium, that the Orthomnium must without doubt be re- 

 garded as a very distinct genus. Particularly the endostome 

 concerning, it resembles exactly that of Leptostomnm. 



Eliizogouiaceae. 



19. Rhizogonium spiniforme (L.) Bruch. 



Luzon: Prov. of Bataan, summit of Mt. Mariveles, on 

 trees, alt. 1100 m (Merrill n. 3548 ex p.), on tree trunks, 

 alt. 1300 m (Merrill n. 3679); Prov. of Tayabas, Atimonan, 

 on damp log in ravine, alt. 200 m (Whitford n. 723). 



Mindanao: Distr. of Davao, Mt. Apo, on mossy trunks, 

 alt. 1420 m (Copeland n. 994). 



Area: Widely distributed thorough the tropical and 

 subtropical parts of the World. 



Polytrichaceae. 



20. Pogonatum albo-marginatum (C. Mull.) 



Luzon: Prov. of Bataan, Mt. Mariveles, on bare soil of 

 „slide", alt. 1300 m (Merrill n. 3680), on freshly burned 

 ground, alt. 1100 m (Copeland n. 1410). 



Area: Philippines. 



