NECKERACE^E.] 201 \Neckera, 



cucullate ; lid conic, obliquely rostrate, long as capsule ; annulus of 23 

 rows. Peristome yellow ; teeth lineal-subulate, inner on a membrane \ as 

 high ; processes longer than the teeth, fenestrate in lower part ; cilia 

 rudimentary or none. 



HAB. In woods on bark of trees, rocks, and the ground. Fr. 9 10. 



3. NECKERA Hedw. 



Muse, frond, iii, 52 (1792). 



Elegant mosses, growing in wide tufts on trees and rocks. Main 

 stem creeping, often stoloniform ; secondary stems ascending or pendulous, 

 pinnate or bipinnate, the branches often elongated like a whip-lash. Leaves 

 octofarious, compressed, the median and intermediate rows sometimes 

 obsolete, the lateral distichaceous, divergent, unsymmetric, ovato-lanceolate 

 or lingulate ; cells small, oval or rhombic, linear below. Capsule immersed 

 or exserted, regular ; calyptra cucullate, sometimes with scattered hairs ; 

 peristome inserted deeply, of 16 lineal-lanceolate teeth ; processes of 

 endostome narrow linear, without cilia. Named after N. J. Necker of 

 Mannheim. 



Hedwig first named this genus Neckeria (Fund. muse. P. 2, p. 93, 1782) ; but 

 this had been already adopted by Scopoli for Corydalis in the Fumariaceae (Introd. 

 ad Hist. Nat. 313, 1777), and this was probably the reason why Hedwig altered it 

 as above. The two seem to me to be sufficiently distinct in pronunciation, so that 

 both may be retained; but in America P. Beau vois' genus Eleutera (1805) has been 

 adopted. Paris enumerates 128 species. 



CLAVIS TO THE SPECIES. 



Leaves not transversely undulate. complanata. 



transversly undulate. 



Capsule exserted. 



Robust ; leaves lingulate, suddenly pointed. cnspa. 

 Small : leaves lanceolate, gradually acute. fonttnaloides. 

 immersed. p*n*ata. 



Sect i. LEIOPHYLLUM C. Muell. Leaves not undulate. 



i. NECKEEA COMPLANATA (Z.) Hueb. 



Dioicous ; growing in soft pale green tufts. Stems pinnate ; branches 

 crowded, often attenuated and flagelliform. Leaves complanate, not 

 undulate, ovate-oblong, obtuse, apiculate, with two faint nerves at base ; 

 capsule roundish-elliptic, erect ; lid rostrate. (T. CXX, D.) 



