Musci. (mosses.) (65) 665 



6. C. brevisetum, Bryol. Europ. Eamification subfasciculate ; branches 

 nearly terete, acuminate ; leaves crowded, ovate and oblong-ovate, the point ex- 

 tended and subsemilate, the margins slightly reflexed ; annulus large ; inner 

 peristome abortive, or a membrane lining the teeth. — Dry places, on trees, &c., 

 Western and Southern States ; not common. Fruits sparingly. 



Tribe XXXn. NECKEKE^. 



76. NECKERA, Hedw. ; Bryol. Em-op. (Tab. V.) 



Calyptra cucullifonn. Operculum conic, rostellate. Capsule oval, erect, 

 pedicellate, immersed or exserted. Peristome double ; the exterior 16 long lin- 

 ear-acuminate teeth; the interior 16 subulate cilia, more or less developed, the 

 basilar membrane veiy nan'ow. Inflorescence monoecious or dioecious. — Rather 

 large species, conspicuous for their flat broad stems, and shining, complanate, 

 ovate-lanceolate, scarcely costate, and mostly transversely undulate leaves, of a 

 thin, smooth texture, and a minute elongated-rhomboidal areolation. (Named 

 for N. J. NecJcer.) 



1. W. pennata, Hedw. Monoecious; branchlets obtuse; leaves acumi- 

 nate ; capsule immersed in the long perichsetial leaves ; cilia of the inner peri- 

 stome obsolete or rudimentary. — Trunks of ti-ees ; common in mountainous 

 distiicts. (Tab. V.) (Eu.) 



2. N. coniplanata; Bryol. Europ. Dioecious ; branches often attenu- 

 ated, flageUiform ; leaves ovate-oblong, obtuse, apiculate, not undulate ; capsule 

 long-pedicelled, exserted ; peristome with ciHa half as long as the teeth. — (Les- 

 kea complanata, Hedw.) — On rocks. New England, Alleghany Mountains, and 

 Tennessee. (Eu.) 



7^7, OMAHA, (Brid.) Biyol. Europ. (Tab. V.) 



Calyptra cuculliform. Operculum conic, rostellate. Capsule oblong, erect, 

 or slightly cemuous, pedicellate. Peristome as in Hypnum. Inflorescence 

 monoecious. — Eamification irregular; stems and branches flat, iatemiptedly 

 leafy ; leaves complanate, ovate-oblong, semi-costate, obtuse, apiculate, shining, 

 with a minute rhombic areolation. (Name from SiiaXos, flat, refeniig to the 

 stems and branches.) (Tab. V.) 



1. O. trichomanoides, (Brid.) Bryol. Europ. Main branches ascend- 

 ing, arcuate-incurved, irregularly ramulose ; leaves often somewhat falciform, 

 lax, pale-green, serrulate above ; capsule oval-oblong ; ciliolse of the inner peri- 

 stome rudimentary or absent. — On rocks, about Lake Superior, but rare, Drum- 

 mond. (Eu.) 



2. O. Jaiuesiana; W, P. Sch. mss. Pound by Mr. Thomas P. James 

 on the "White Mountains, New Hampshire, and on the Catsldll Mountains, New 

 York. — (Hypnum trichomanoides, James, Emm.) — We have seen no descrip- 

 tion of this species, and our specimens are too imperfect (being without fruit) to 

 exhibit the distinctive characters. 



3. O. I Wriglltii, SuUiv. (Muse. Bor.-Amer., No. 269.) Stems pros- 



56* 



