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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 11 



Plate 102 



Fig. 1. Pteropsiella frondiformis. 1 a. Thallus, X 15 ; F, flagelliform branch. 1 b. Portion 

 of a thallus wing with a marginal tooth bearing a long papilla, X 200. 1 c. Underleaf with rhizoids, 

 X 200. 1 d. Thallus margin with a long tooth bearing the papilla, X 200. 1 e. Portion of a thallus 

 with a Frullania type branch, X 20. 1 f. Female bract. 1 g. Female inflorescence and perianth 

 on a ventral branch. 1 h. Ventral branch with male inflorescence. 1 i. Male bract and anther- 

 idium. Fig. 1 a-c, from an isotype (NY); 1 f-i, after Spruce, 188S ; 1 d, e, from Venezuela, 

 Steyermark 60485. 



Fig. 2. P. serrulata. 2 a. Thallus, X 15. 2 b. Portion of a thallus wing with the serrate 



