—54— 



will be noted that each apical quadrant has cut off three segments and that, by 

 subsequent divisions in these segments and in the basal quadrants, the mature 

 gemma shows eleven cells on each side or twenty-two cells in all. The gemma is 

 crenulate along the margin and lacks organs of attachment. In C Biddlecomiae 

 and C. minutissima the apical quadrants cut off three and four segments re- 

 spectively, while in C. diaphana, either three or four segments are cut off. The 

 gemmae in the firsc two of these species agree with those of C. setiloha in their 

 crenulate margins and lack of organs of attachment; in C. diaphana three such 

 organs are produced, and the margin is denticulate rather than crenulate. 



5. Rectolejeunea Brittoniae Evans, Bull. Torrey Club 38: 209. pi. q, 

 f. 1-12. 191 1. 



Collected in March, 1913, at Sanford, Florida, on oak, by S. Rapp (No. 

 63), growing in company with Mastigolejeunea auriculata (Wils. & Hook.) Schiffn.: 

 also in March, 1910, at Siguanea, Trinidad Mountains, Santa Clara, Cuba, on 

 a tree trunk, by E. G. Britton (No. 4933); also, in 1913, at Azua, Santo Domingo, 

 by J. N. Rose. At the time this species was described it was known with certainty 

 from the Bahama Islands only. Since, however, it is widely distributed and 

 abundant on these islands, its detection in material from Florida and the 

 West Indies is not at all surprising. 



6. Prionolejeunea serrulata (Mont.) Steph. Sp. Hepat. 5: 224. 191 3. 

 Lejeunea serrulata Mont.; Ramon de la Sagra, Hist. phys. pol. y natur. de Cuba 

 9: 479- Pl- 18, f. 3. 1845. 



Collected in August, 1905, on a rock in a stream, near Marmelade, Hayti, 

 by G. V. Nash and N. Taylor (No. 1343). Originally collected by Auber in 

 Cuba, no more definite locality being indicated by Montagne. No other sta- 

 tions for the species are known at the present time. 



7. Leptolejeunea hamulata (Gottsche) Schiffn. See Evans, Bull. Torrey 

 Club 29: 504. pi. 24. 1902. 



The species was originally described from Cuban specimens collected by 

 C. Wright and distributed in his Hepaticae Cubenses. Many ysars later the 

 writer discovered it near Cayey, Porto Rico, and published a new description of 

 it with figures. It has been found also in the vicinity of Mayaguez, Porto Rico, 

 first by A. A. Heller, in 1900, and afterwards by E. G. Britton and D. W. Marble, 

 in 1906, (No. 738). Specimens from Heller's collection have been distributed 

 by Miss Haynes in her American Hepaticae (No. 85). During the present year 

 the species has been gathered by Mann at St. Marc, Hayti, and by R. Thaxter 

 ac Grand Etang, Grenada, so that it is now known from four of the West Indian 

 Islands. It apparently flourishes at rather low altitudes. 



8. Cyclolejeunea Chitonia (Tayl.) Evans, Bull. Torrey Club 31: 194. 

 pL 8, f. 16-23. 1904. 



Collected in March, 1909, at Cuna-Cuna Gap, Jamaica, by E. G. Britton 

 (No. 1291); also, in 1913, at Grand Etang, Grenada, by R. Thaxter. Extensions 

 of range. Formerly known from British Guiana (the type locality), Porto Rico, 

 Guadeloupe, Martinique, and St. Vincent. 



