268 Britton : Bryological notes 



These specimens were in the herbarium of P. V. LeRoy for 

 many years and have been purchased by the New York Botanical 

 Garden. 



Erpodium biseriatum (Austin) Austin, Bot. Gaz. 2 : 142. 1877. 

 Lejeunea biseriata Austin, Proc. Acad. Sci. Phila. 21 : 225. 1869. 



Stems slender, 1 cm. long and (with leaves) about I mm. wide. 

 Leaves 0.40-0.50 mm. long, unequal at base, cells at apex dis- 

 tinct, hexagonal or rounded, 0.003 x °- OI 3 mm - m diameter with 

 thick brown walls, basal and central cells longer and narrower, 

 0.0 10 x O.040 mm., the translucent marginal cells not papillose, 

 dorsal cells with from 4-8 minute papillae. Fruit unknown. 



Collected with Lejeunea Sullivantii by IV. S. Sullivant near 

 Augusta, Georgia, in 1845. 



These specimens and a full series of notes were sent to Man- 

 chester, England, with Austin's hepatics and remained there a 

 number of years in the herbarium of \V. H. Pearson. They were 

 subsequently returned and placed among the Hcpaticae in the 

 Columbia University Herbarium where they were found by Dr. 

 M. A. Howe. 



Erpodium Pringlei E. G. Britton, n. sp. 



Plants in thin, appressed, glaucous-green mats : stems creep- 

 ing and branching, branches short : leaves densely imbricate, squar- 

 rose with spreading points, ovate, 0.5 mm. long, apex acute or 

 obtuse, papillose or hyaline, the cells hexagonal, papillose, large, 

 0.013x0.021 mm. in diameter, with brown walls thickened 

 at angles, collenchymatic ; margins entire or minutely papillose- 

 crenulate, basal cells elongated and smooth ; perichaetial leaves 

 scarious, erect-clasping, apiculate, with clear apical cells ; capsule 

 half-immersed, 1 mm. long, lid apiculate, mouth bordered by red 

 cells as well as the lid; peristome none: spores rough, 0.027- 



0.035 mm - 



Type station : Mexico, near Guadalajara, C. G. Pringle, 1889, 

 no. 710, on trees ; Zapotlen, May 28, 1893, and Terzuela, July 2d, 

 1893, no. 1 6a. 



This genus is not recorded for Mexico by Bescherelle in his 

 Prodromus Bryologiae Mexicanae. Dr. Max Fleischer states that 

 E. diversifolium C. Mull, appears to be only E. domingense ! 



New York Botanical Garden. 



