358 BRYACE^. [Hypnum 



late at the apex, the upper tubulose : capsule oblong-ovate* 

 inclined, dilated at the orifice and cylindrical-oblong when dry ' 

 operculum rostellate from a conical base ; segments slightly 

 open between the articulations, a little longer than the solitary 

 cilia ; annulus simple, large. — lihi/nchostegium Jamesii, Sulliv. 

 Icon. Muse. Suppl. 92, t. 68 ; Austin, Coult. Bot. Gaz. i. 31. 

 Hab. EiToll Dam, Androscoggin River, New Hampshire (James). 



86. H. laxepatuium. Like the last in habit, size and color, 

 differing in the open leaves two-ranked and compressed, spinose- 

 denticulate toward the apex, the alar cells twice as large and 

 the lowest vesicular, the capsule shorter, pyriform when dry 

 and much dilated at the orifice, the operculum twice as long 

 and acutely rostrate, the teeth rugose-papillose at the apex, the 

 segments entire, and the cilia none or rudimentary : perhaps 

 dioecious, the male flowers being unknown. — lihynchostegium 

 delicatidum^ James ; Sulliv. Icon. Muse. Suppl. 93, t. 69 ; Austin^ 

 1. c. 30. 



Hab. Same as the last [James). 



Subgenus XIII. RHYNCHOSTEGIUM. (PL 6.) 



Plants larger than in MapJddostegium, the stems prostrate, 

 irregularly divided, more or less compressed. Leaves often 

 two-ranked, ovate-lanceolate, acuminate, unicostate or shortly 

 bicostate ; areolation somewhat loose, elongated-rhomboid al. 

 Capsule oval, inclined and cernuous. Lid rostrate. — llUyiv- 

 chostegiurn^ Schimp. 



87. H. geophilum, Aust. Ms. Tufts thin, very soft and 

 loose, bluish or yellowish green, very glossy : leaves flat, disti- 

 chous, somewhat distant, horizontally spreading, oblong-lanceo- 

 late, tapering to a blunt point, distantly serrulate, bicostulate ; 

 areolation long, narrow, flexuous, the alar cells few, not hya- 

 line : capsule small, thin, short, ovate-gibbous ; operculum coni- 

 cal, long-rostrate, the beak turned upward or downward ; seg- 

 ments narrow, linear ; cilia two or three, nearly as long as the 

 segments, some of them unequal ; annulus large, compound. — 

 Hhynchostegium geopMlwm^ Aust. Muse. Appal, n. 345 ; Sulliv. 

 Icon. Muse. Suppl. 94, t. 70. H. depressicm, James, Proc. 

 Amer. Philos. Soc. xiii. 114, not Swartz; Sulliv. & Lesq. Muse. 

 Bor.-Amer. Exsicc. (ed. 2), n. 437. 



