Barbula.] BKYACE^. I33 



B. INTERMEDIA, Brid., differing from the last chiefly in the concave 

 scarcely cariuate leaves, the borders reflexed only in the middle, and 

 the hair-point less spinulose, is recorded in Rau & Hervey's catalogue on 

 uncertain authority. No specimen of this species has been observed iu 

 North America so far as we know. 



47. B. papulosa, Muell. Dioecious : plants in irregular 

 loosely si3reading tufts, green when moist, dark brown when 

 dry : leaves erect-sj^reading, the lower ovate, the upper obovate- 

 spatulate, tiddle-shaped (panduriform), very concave, slightly 

 acuminate or rounded or obcordate at the apex, papillose on the 

 back, with a short hair-point prolongation of tbe costa, which 

 bears on its papillose upper surface crowded slightly pedicellate 

 gemmae, each composed of 2 to 5 clustered roundish green 

 cells: fruit unknown. — Syn. i. 598. Tortida 2)apillosay Wila. 

 Bryol. Brit. lo5, t. 44 ; Lindb. Trichost. 244. 



Hab. Trunks of elm trees, Massachusetts (J. L. Eussell); Pennsyl- 

 vania, New Jersey and Delaware {James); common around Philadelphia. 



48. B. Muelleri, Bruch & SchimjD. Very similar to £. 

 ruralis, differing in its bisexual inflorescence, larger and more 

 compact tufts, the leaves more densely crowded on the stem, 

 open, not reflexed, broadly oblong-obtuse or rounded to a slightly 

 spiiudose awn, carinate in the middle, with borders more or less 

 revolute in the lower part, the costa reddish and somewhat 

 hirsute. — Bryol. Eur. t. 168. Tortida princeps, DeNot. ; 

 Lindb. Trichost. 247. 



Hab. Common on decayed trunks in California {Bolander, Kellogg, 

 Watson); Oregon {Nevius, E. Hall); Nevada and Western Montana 

 ( Watson). 



Tribe IV. GPJMMIE^. 



Plants repeatedly dichotomous by innovations. Leaves 

 opaque ; areolation hexagonal or linear-sinuous in the lower 

 part, minutely round-hexagonal, punctiform and chlorophyllose 

 in the upper. Calyptra mitriform, partly or entirely covering 

 the capsule, rarely cuculliform, smooth or furrowed, often 

 hairy. Capsule erect, generally regular, on a straight or arcuate 

 pedicel. Peristome generally perfect, simjile, with the teeth 

 short, flat, entire or diversely lacerated or lacunose or divided 

 into filiform segments. 



