-58- 



No. 42, Very likely correct, as this species is common on rocks along the 

 bluffs of the Missouri and Mississippi rivers. 



No. 43. Very likely correct and more common than the last preceding 

 species in similar situations. 



No. 44. Evidently intended for Anomodon rostratus Hedw., a species still 

 more common than the last two preceding. Apparently no species of Leskea 

 were collected by Pech, although two species, L. graalescens Hedw. and L. 

 poly car pa Ehrh. are common on bases of trees in woods throughout the State. 



No. 45. Possibly correct and evidently intended for Thelia hirtella Sulliv., 

 as there was no genus Thelia in Hedwig's time, and I assume that Pech intended 

 to write Sullivant instead of Hedwig. 



No. 46. Possibly correct, and evidently intended for Thelia Lescurii Sulliv., 

 thus showing that he was aware of the genus Thelia Sulliv. Another species of 

 Thelia, T. asprella Sulliv., does not appear to have been collected by Pech, although 

 it is very common on trees throughout the State. Concerning the date of Pech's 

 collection, no evidence appears in the Pech Catalogue, but ulterior evidence 

 exists showing that he made the collection during the years 1842 and 1843. As 

 to the time when the Catalogue was prepared, the mere listing of Thelia alone 

 indicated that it was after Sullivant established that genus in 1858, and after 

 Pech had left Louisiana, Missouri, and had taken up his residence in Washington, 

 D. C. 



No. 47. Probably correct, and evidently intended for Pylaisia intricata 

 Br. & Sch., which is now known as Pylaisiella Schimperi Grout, the common 

 species on old logs and trees throughout the State, but not the Pterigynandrum 

 intricatum of Hedwig, an European speices. 



No. 48. Evidently intended for Cylindrothecium cladorrhizans Schimper, 

 and what is now called Entodon cladorrhizans (Hedw.) C. Muell., and very prob- 

 ably correct, as it is a common species on rocks and trees throughout the State. 



No. 49. Evidently intended for Cylindrothecium seductrix Sulliv., and what 

 is now known as Entodon seductrix (Hedw.) C. Muell., another very common 

 species in dense woods along the bluffs of the Missouri and Mississippi rivers. 

 Another species of Entodon, E. compressus C. Muell., appears not to have been 

 collected by Pech, although not uncommon on old logs in woods along the Mis- 

 souri River bluffs to St. Louis. Still another species, Platygyrium repens (Brid.) 

 Br. & Sch., sometimes called Entodon repens (Brid.) Grout, common on old logs 

 in deep woods along the Aiissouri River bluffs, seems to have been overlooked 

 by Pech. 



No. 50. Certainly correct, and the only correct determination of this 

 species in Missouri, all others naming this Climacium dendroides (L.) W. & M., 

 which is a species of the Northern and Eastern states. 



No. 51. Evidently intended for Thuidium recognitum (Hedw.) Lindb., and 

 probably correct. 



No. 52. Evidently intended for Thuidium minutulum (Hedw.) Br. & Sch., 

 but very doubtful, as this is a species of the Northern and Eastern states and has 

 not been collected again in Missouri. Several other species of Thuidium appear 



