Evans : Hepaticae of Puerto Rico 285 



Colttra variabilis Trevis. Mem. r. 1st. Lomb. III. 4: 402, 

 1877. 



Lejemtea {Cerato-Lejetmed) variabilis Spruce, Hep. Amaz. et 



\ 



And. 206. 1884. 



i 



Ceratolejemiea variabilis Schiffii. ; Engler & PrantI, Nat. Pflanz- 

 enfam, i^: 125. 1893. 



On bark of trees, on rotten logs, on living leaves and on rocks. 

 Without definite localities, ScJiwanccke^ Sinteiiis, The species is 

 said to be widely distributed in the American tropics, and the fol- 

 lowing stations may be quoted : St. Kitts, the type locality, B rent el ; 

 Dominica, Elliott; MsLttiniquc, Hus not ; Sl Vincent, Elliott ; region 

 of the Amazon, Spruce. No specimens from Puerto Rico have 

 been seen by the writer. 



C, variabilis is very closely related to the preceding species but 

 differs from it in its autoicous inflorescence. Whether this single 

 difference is sufficient to separate the species is a question which 

 cannot be answered definitely at the present time. 



Ceratolejeunea Sintenisii Steph. 



Lcjeiinea cormita Steph. Hedwigia 27: 285. 1888. (Not 



Lindenb.) 



Ceratolejetmea Sintenisii Steph.. Hedwigia 34: 237. 1895. 



Olive -brown, prostrate and loosely adherent to the substratum : 

 stems 0.1 mm. in diameter, elongated, densely and irregularly pin- 

 nate, the branches mostly short and widely spreading, sometimes 

 with smaller leaves than the stem : leaves imbricated, the lobe 

 convex and more or less inflexed at the apex, falcate-ovate, 0.7 

 mm. long, 0.45 mm. wide, antical margin arching across the axis, 

 rounded from very near the base to the apex, postical margin 

 straight or nearly so, apex broad, rounded p^or bluntly pointed, 

 margin entire or very minutely crenulate from projecting cells, 

 sometimes angular-repand in the outer part ; lobule conforming 

 to the normal type, strongly inflated, broadly ovate In outline, 

 0. 12 mm. long, 0.09 mm, wide, keel arched, almost smooth, form- 

 ing an obtuse angle with the postical margin of the lobe, free 

 margin of lobule somewhat curved, apical tooth short and blunt, 

 slightly curved, papilla in a shallow depression, sinus lunulate; 

 utricuH occasionally present at the base of short branches, occur- 

 ring singly, 0.35 mm. long; cells of lobe averaging 13// at the 

 margin, 20fx in the middle and 30 x 20/i at the base, trigones 

 large, triradiate and rounded at the ends of the rays, often conflu- 



