368 BRYACE^. [Uypyiwn. 



ing, with branches erect, rooting at base and sometimes at apex, 

 comj)huiate-i'oUate : leaves distichous, spreading, ovate-lanceolate 

 at base, acuminate or subpiliform, long-apiculate, concave, very 

 entii'e, ecostatc, not decurrent at base ; areolation narrow, uni- 

 form ; pericha^tial leaves half-clasping at base, oblong-ovate, 

 acuminate, entire: capsule subcernuous, obovate, long-necked, 

 enlarged at the orifice and campannlate when dry, pale brown ; 

 pedicel short, purple ; operculum conical, rostellate ; teeth dis- 

 tantly articulate ; cilia short, robust, unequal ; annulus narrow, 

 simple. — New Zeal. Fl. ii. 476 (name only). Plagiotheciwn 

 Mi(ellcrkmum, Schimp, Syn. 584 ; Sulliv. Icon, Muse. Su})])!. 89, 

 t. GG. 



Had. Eocky ravines; New Jersey [Austin)', White Mountains 

 {James)\ Oliio (Lesquereux). 



108. H. SullivantiaD, Schimp. Ms. Dioecious : plants in 

 compact pale green or yellowish shining tufts ; stems erect, 

 with few branches, scattered leaves, and radicles at base: leaves 

 crowded, subimbricate, oblong-ovate, abruptly and shortly fili- 

 form-acuminate, very concave, thin, glossy, serrulate toward the 

 apex ; costa bind, one of its branches sometimes longer ; areola- 

 tion very long and narrow, the basilar a' little shorter and 

 broader: pericha?tial leaves erect, the inner oblong, narrowly 

 acuminate : capsule cylindrical-oblong, constricted at the neck, 

 erect, regular, subinclined, smooth when dry ; operculum long- 

 conical, obliquely short-rostrate ; cilia in pairs, stout, and nearly 

 as long as the entire segments ; annulus simple, large. — Sulliv. 

 Mosses of U. States, 80, and Icon. Muse. 207, t. 120 ; Sulliv. & 

 Lesq. Muse. Bor.-Amer. Exsicc. n. 855. Plagiothecium Sulli- 

 vantice, Schimp. in Bryol. Eur. Plafjiotheciiim, 16. 



Had. Moist saiulstone roclcs and sliaded banks in pine woods, Ohio. 



The species published imder tlie auiliority of Seliiinper is, as .Sullivant 

 remarks (Icon. Muse. 1. c. ), perhaps too Insufficiently characterized to be 

 separated from Pldyiothecium lioeseaiuim, Brnch & Scliimp. Bryol. Eur. 

 t. 50-1, and he adds tliat the better course miglit be to reduce both of them 

 to II. syloaticiun, a very variable species. The appearance of this moss 

 and its inoile of growth are strikingly different from those of //. syl- 

 vatlciun, and, oven if a variety, the variety is constant in its cliaracters. 

 It seems, therefore, justifiable to preserve a species made by Schimper 

 to lionor tlic name of a very acute lady bryologist, who for years assisted 

 her hnsban.! in his researches. 



109. H. sylvaticum, ITuds. Dioecious: tufts loose, soft, 

 depressed, stolon if erous, dark green : leaves flat, distant, the 



