— 59 — 



none, margins finely serrulate, a few alar cells denser and quadrate, all 

 other cells elongated with small papillae at the angles. Monoicous ; periche- 

 tial leaves short, scarcely covering the vaginule; seta short, 7-12 mm. long; 

 capsules small, less than i mm. long; contracted below the mouth when dry, 

 ovate when moist; lid hemispherical, mammillate. walls with thickened cells, 

 peristome double; teeth and segments finely papillose, the teeth with lateral 

 and dorsal projections, cilia slender, 1-3; segments not perforate; spore? 

 small, .010-. 013 mm.. 



Rooting and creeping on old stems and roots in moist, shady hammock, 

 St. Lucie River, Florida, J. D. Smith (Austin Musci App. Suppl. no. 545); 

 Miami, Florida, E. G. Britton. 



This species is listed by Renauld and Cardot in their Check-list, and 

 was originally described by Miiller from specimens collected in Brazil by 

 Pabst, with which he included some Mexican specimens wrongly referred to 

 H. reptans by Deppe and Schiede. According to Mitten this species is 

 widely distributed in the West Indies and South America. 

 Taxit he litem planum (Brid.) Mitt. J. L. Soc. 12:496. 1869. 

 'Hypnum planum Brid. Muse, Recent. Suppl. 2:97. 1812. 



This species is listed by Renauld and Cardot in their Check-list by the 

 above name, but in the Manual it {appears as Hypnum. It is described as 

 having cells of the leaves "papillose, " but no mention is made of the pecu- 

 liar fact that the papillae are very small, and numerous, occurring in rows 

 down the centre of each cell. It was collected by John Donnell Smith, "In 

 wet hammocks near Caloosa, Fla., 1878, associated with Hypjium Wrightii, 

 H. thelistegiuin, \H. micans and H. serrulatum'"' according to Austin's 

 specimens. This association is also very interesting, as three of these species 

 have since been referred to other tropical American genera, Stereophyllum, 

 Microthamium and Isopterygium. Austin was at first inclined to call his 

 specimens a new species, but finally concluded to refer them to T. planum. 



One of the species which seemed to be most common at Miami, was 

 Neckera undulata Hedw. This species has been referred to Hypnum 

 Jamaicensis by Stuntz. Apparently the synonymy is as follows : 



Neckera Jamaicensis (Gmel). 



Hypnum Jamaicensis Gmel. L. Syst. Nat. 1341. 1791. 



Neckera undulata Hedw. Muse, frond. 3. 51. t. 21. 1792. 



Piloirichum undulatum, Beauv. Prod. 37. 1805. 



Eleutera Jamaicensis Stuntz. Bull. T. B. C. 27:2io. 1900. 



This is a small species wnth dark green foliage, the leaves very undulate ; 

 it has thus far been found sterile in Florida. It was collected by Charles 

 Wright in Cuba and Santo Domingo, and occurs in various parts of Central 

 and South America, 



In his Revision of the genus Neckera{^M\\. T. B, C. 27:202-2ii. 1900) 

 Mr. Stuntz substituted the name Eleutera for this genus, as there is an older 

 use of the genus Neckera by Scopoli, 1777, Both Scopoli and Hedwig, how- 

 ever, spelled it Neckeria. It would save confusion, if this change could be 

 avoided, as it appears that the genus Leskia is also mixed up in the ques- 



