574 Williams : Mosses from tropical America 



Cyclodictyon cubense sp. nov. 



Synoicous : plants forming low dull-green mats, the stems with 

 complanate leaves 3 mm. wide ; lateral leaves broadly ovate- 

 oblong, up to 1.75 mm. long and 0.8 mm. wide, entire, acutely 

 short-pointed with a pale border of one row of cells ; median and 

 upper leaf-cells hexagonal, slightly elongated, up to 50 /i long 

 and about 40 // wide, toward base becoming somewhat narrower 

 and longer ; costa forking at base, extending two thirds up, smooth 

 on the back, apices not projecting ; perichaetial leaves entire, short 

 and ovate or ovate-lanceolate, with erect, acute apex, the longer 

 about I mm. long; seta smooth, 12 mm. high; capsule nodding 

 or pendant, about i mm. long, with a conical rostrate lid a little 

 shorter; outer peristome-teeth red, cross-striate below, 65/7. wide 

 at base, with median furrow 8// wide and reaching to near base 

 from about two thirds up ; inner segments solid, nearly as long as 

 teeth, from a basilar membrane about one third height of teeth ; 

 spores smooth, 12 fx in diameter; calyptra smooth. 



Finca Las Gracias, Yateras, Oriente, 500 meters, on decayed 

 log, May 5, 1907, W. R. Maxon (^/pi). This species is near 

 C. limbatuin and C. Regnellii, but differs in the pale, entire border 

 of leaf of only one row of cells and in the costa smooth on the 

 back. 

 Haplocladium microphyllum (Sw.) Broth. {Leskca niicropliylla 



(Sw.) Mitt.) 



Jaguey, Yateras, Oriente, at base of trees, 420 meters. May, 



1907 {4353\ 



Sematophyllum admistum (Sull.) Mitt. 



Jaguey, Yateras, Oriente, 420 meters. May, 1907 {4344). 

 Microthamnium thelistegum (C. M.) Mitt. 



Jaguey, Yateras, Oriente, 420 meters. May, 1907, {43 jj)- 



