134 Evans: Hepaticae of Bermuda 



The genus Crossotolejcunca is largely if not wholly confined to 

 the American tropics and includes about a dozen species. The 

 type is C. Boryana (Mont.) Schiffn., which is of about the same 

 size as C. bermudiana and which agrees with it also in its autoicous 

 inflorescence. The leaves of C. Boryana, however, are more 

 densely imbricated, the apex of the lobe is acuminate and usually 

 reflexed, the leaf-cells are minutely verruculose, the apical cell of 

 the lobule is more curved and can usually be seen without dissec- 

 tion, the underleaves are larger, with narrow acuminate divisions, 

 sharply unidentate on the sides, the perichaetial bracts and brac- 

 teoles are usually more sharply toothed, and the wings of the 



perianth are spincse or incised-serrate. 



C. paucispina (Spruce) Steph.,* a species first described from 

 Brazil but afterwards recorded from Guadeloupe, is even more 

 closely related. Through the kindness of Mr. M. B. Slater, of 

 Malton, Yorkshire, the writer has been enabled to study a por- 

 tion of the type material of this species from the Spruce herbarium. 

 It agrees with C. bermudiana in general appearance and in most 

 of the characters derived from the lobes, lobules and leaf-cells. 

 It is, however, somewhat more robust, the leaves measuring about 

 O.75 mm. in length and the broadly orbicular underleaves about 

 0.25 mm. The leaf-cells also are a trifle larger and are very 

 minutely verruculose, although described as smooth by Spruce. 

 The underleaves are more deeply bifid, w r ith acuminate and often 

 connivent divisions, and the perianth is slightly compressed and 

 only four-keeled, the antical face being plane. According to 

 Spruce the keels bear a few deciduous spines in the upper part f 

 but this could not be demonstrated in the material examined by 

 the writer. 



Yale University. 



* Hedwigia 35 : 76. 1896. ( Lejeunea pa u a 'Spin a Spruce, Hep. Amaz. et And 

 163. 1884). 



