12^ BRYACE^. [Barbula. 



34. B. agraria, Hedw. Moncecious : plants short and 

 simple, closely tufted, with few leaves: leaves close, erect, 

 spatulate-lanceolnte, involute on the borders ; costa yellow, ex- 

 current ; cells of the basilar areolation large, the upper smaller, 

 hexagonal, not opaque ; inner perichretial leaves two, convolute, 

 rounded to a blunt apex, loosely radiculose : male flowers on a 

 short basilar branch, with leaves convolute, acuminate, erect : 

 calyptra long-beaked, reaching to the middle of the capsule : 

 capsule annulate, oblong-ovate or subcylindrical and slightly in- 

 curved, dark red, on a comparatively long reddish pedicel ; lid 

 long, narrowly conical ; peristome twisted to the left. — Muse. 

 Frond, iii. 17, t. 6; Muell. Syn. i. 604. Bryum agrarium, 

 Swartz, Prod. 139. 



Hab. On stones and stone walls; Key West, Florida (Pourtales, 

 Garber, J. Donnell Smith)- Apalachicola (Drummond). 



This species, generally found in the West Indies, is referable to a sepa- 

 rate section, Uyophiladelphns, Muell., related to the Comolutae, especially 

 by the involute stem-leaves and the convolute perichastial ones. Its 

 monoecious inflorescence and the flat teeth twisted to the left are char- 

 acters at variance with those of tliat section. 



35. B. Raui, Aust. Plants very short, gregarious, sub- 

 cesi)itose : leaves tufted, crispate, spatulate-ovate, cymbiform, 

 concave, acuminate or apiculate, smooth, flat on the borders ; 

 costa stout, subexcurrent ; basilar areolation loose, the upper 

 obscure, of nearly round unequal cells ; pericha3tial leaves 

 thinner, convolute, often blunt, thinly costate : flowers dioecious, 

 the male plants much smaller than the fertile ones, with leaves 

 obscurely erose-dentate and distinctly costate : calyptra reach- 

 ing the middle of the capsule, which is on a very slender pedicel 

 1 cm. long, erect, cylindrical-oblong, costate when dry ; lid 

 long-conical, rostrate, erect ; teeth long, closely twisted ; annu- 

 lus narrow. — Bull. Torr. Club, vi. 43. 



Hab. On rocks, Matagorda County, Texas (B. G. Bechdolt). 



36. B. Donnellii. Dioecious: stems 2 to 5 m.m. long: 

 leaves involute, crispate when dry, open, spatulate-oblong or 

 ovate-lanceolate, acute or submucronate, deeply canaliculate- 

 concave, somewhat scabrous on the back, obscurely serrulate at 

 the apex; costa stout, subpercurrcnt : fruit unknown. — Tor- 

 tula Donnellii, Austin, Coult. Bot. Gaz. iii. 31. 



Hab. Banks of the St. Lucie River, Florida, with B. agraria (J. Don- 

 nell Smith). Apparently a variety of one of the two preceding species. 



