BAENES — NORTH AMERICAN MOSSES. 227 



Leaves rounded, abruptly apiculate. 

 Revolute at base on one side, capsule immersed . N. Menziesii/ 282. 

 Not revolute, capsule exseried . . . • N. complanata, 283. 

 Leaves acute or acuminate. 

 Ecostate or nearly so. 



Capsule immersed or half exserted. 



Shoots obtuse N. pennata, 282. 



Shoots attenuate to apex ... N. oligocarpa,- 283. 



Capsule exserted. 



Segments as long as the teeth and similar . N. Douglasii,* 283. 

 Segments shorter, abruptly narrowed from a broad 



carinate plicate base .... N. pumila, 284. 



Costate to the middle or beyond. 



Margins broadly revolute .... N. Floridana, 284. 



Margins not revolute. 



Alar cells fawn-color, costa thin, percurrent N. Ludorieiae, 284. 



Alar cells opaque, costa vanishing . . N. cymbifolia, 284. 



HOMALIA, p. 285. 



. , . , ,, .jj, , i. (H.Maconnii, 403. 



Costa single,vanishmg above the middle, leaves serrate | ^ Jamesii,* 285. 



Costa double, very short or none, leaves entire . H. gracilis, 286. 



METEORIUM, p. 286. 



Leaves serrulate M. pendulum, 286. 



Leaves minutely crenulate M. nigresceus, 287. 



LEUCODON, p. 287. 



Capsule exserted. 



Leaves entire, open-erect, lid exactly conic . L. sciuroides, 288. 



Leaves serrulate at apex, squarrose, lid obliquely ros- 

 trate L. julaceus, 288. 



Capsule surpassed by perichaetial leaves, leaves secund L. brachypus, 288. 



1 See Appendix, nos. 399, 400. 



" See Appendix, no. 401. 



' See Appendix, no. 402. 



* Including H. trichomanoides L. & J. Man. 285 (not Bruch. & Schimper), H. obtusata 

 L. & J. (not Mitten). I am unable to detect from the descriptions alone any character 

 which wUl separate H. Jamesii from H. Macounii. If type specimens show H. Jamesii 

 to be the same its priority will make it the name for the type instead of H. Macounii. 



