76 LESKEACEAE 



T. scitum (Beauv.) Aust. "On base of trees near Closter, 

 X. J.," Muse. App. 300; Flushing!! and Orient, L. Id.; New 

 Dorp, Todt Hill and Tottenville, S. Id., E. G. B., Bx!; Pali- 

 sades, state line, N. Y. & N. J., E. G. B., Bx! Autumn-winter. 



Var. aestivale (Aust.) Best. "On roots of trees, X. J, 

 & N. Y. ; frequent," Muse. App. 301. 



T. Virginianum (Brid.) Lindb. On dry sterile ground in 

 open woods, also about the bases of trees; frequent. Spring. 



CLAOPODIUM R. & C. 



Plants variable in size. Stems creeping, radiculose, stolon- 

 iferous; stem leaves triangular to broadly ovate, long and nar- 

 rowly acuminate, margins plane, dentate-serrate, costa trans- 

 lucent; leaf cells small, round-hexagonal to rhombic, thickened- 

 papillate on both surfaces; dioicous. Seta rough; capsule 

 horizontal; annulus compound; cilia 1-3; operculum long-conic 

 to conic-rostrate. Differs from Thuidium in the absence of 

 filamentose paraphyllia and from Anomodon in the curved cap- 

 sules. 



C. pellucinerve (Mitt.) Best. Xoroton, Ct., Mrs. J. D. 

 Lowe. Fide Dr. Best, Bryologist 6: 39. 1903. 



LESKEA Hedw. 



Plants small to medium-sized, growing in tufts about the 

 base of trees, on bark of lower trunk, on rotten wood, more 

 rarely on stones or soil in damp shady places. Stems pros- 

 trate, usually radiculose, sometimes paraphyllose, pinnately 

 to fasciculately branched, rarely stoloniferous; leaves often 

 papillose, ovate to ovate-lanceolate, acute, acuminate or obtuse, 

 usually unicostate, sometimes shortly bicostate, nearly or quite 

 entire (excl. L. denticulata); leaf cells somewhat uniform, median 

 quadrate-hexagonal to oval-oblong, rarely elongated; setae 

 smooth ; capsules usually straight and erect, sometime^ curved, 

 oval to subcylindric, annulate; teeth well developed; segments 

 linear, often keeled and cleft; cilia usually none or rudimentary; 

 opercula mammilla te to long-conic, rarely rostellate; calyptra 

 cucullate, smooth. 



