Bruchia.] BRYACE^. 45 



7. MIOROBRYUM, Schimp. 



Plants very small, gregarious or subcesi^itose, gemmiform. 

 Leaves more closely areolate, strongly costate, minutely papil- 

 lose on the back. Flowers monoecious : antheridia very small 

 in the axils of the comal leaves. Capsule ovate, obtusely apic- 

 ulate, erect upon a short pedicel. Calyptra reaching to the 

 middle of the capsule, plurilobate, split on one side. 



1. M. Flcerkeanum, Schimp. Leaves open, erect, slightly 

 curved back at the top ; the lower small, ovate-apiculate, cos- 

 tate to the middle, more densely areolate ; the upper broadly 

 ovate, mucronate by the stiff brown sharp point of the excurrent 

 costa ; cells of the areolation at base loose and hyaline, in the 

 upper part small, yellowish-chlorophyllose. — Syn. Muse. 11. 

 Phascutn FloerJceamim, Web. & Mohr ; Schwaegr. Suppl. i. 3, 



t. 3. Acaidon FloerJceanum, Muell. ; Bryol. Eur. t. 3. 



Hab. Very rare; found in Illinois by E. Hall, a few plants only, 

 mixed with Pottia subsessills. 



8. BRUCHIA, Schwaegr. (PI. 1.) 

 Plants gregarious, short, simple or sparingly dichotomous. 

 Stem-leaves small, distant, the upper and comal crowded, much 

 longer, all costate to the apex ; basilar areolation hexagonal- 

 rectangular, narrower upward. Capsule with a long solid 

 collum (without collum in J^. palustris), oval, rostell ate, emerg- 

 ing on a more or less elongated pedicel. Calyptra thin, lobate 

 or lacerate at base, mitriform. 



1. B. palustris, Muell. Hypogynous : plants cespitose : 

 lower leaves distant, ovate-lanceolate, narrowly costate ; the 

 upper and comal much longer, abruptly narrowly subulate from 

 a lanceolate base ; costa stout, excurrent into a long semi- 

 cylindrical awn: antheridia naked in the axils of perichoetial 

 leaves : capsule rather large, ovate-acuminate, pale yellow. — 

 Syn. i. 19. Pleuridiwn palustre^ Bryol. Eur. t. 10. Phascum 

 palustre^ Sulliv. Mosses of U. States, 16. Sporledera palustris^ 



Schimp. 



Hab. Sandy soil; rare. Louisiana [Drummond) \ Burlington, New 

 Jersey {James). 



